CA2157314C - Three dimensional ultrasonic scanning devices and techniques - Google Patents
Three dimensional ultrasonic scanning devices and techniquesInfo
- Publication number
- CA2157314C CA2157314C CA002157314A CA2157314A CA2157314C CA 2157314 C CA2157314 C CA 2157314C CA 002157314 A CA002157314 A CA 002157314A CA 2157314 A CA2157314 A CA 2157314A CA 2157314 C CA2157314 C CA 2157314C
- Authority
- CA
- Canada
- Prior art keywords
- probe
- patient
- scan
- travel
- ultrasonic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/42—Details of probe positioning or probe attachment to the patient
- A61B8/4209—Details of probe positioning or probe attachment to the patient by using holders, e.g. positioning frames
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/08—Detecting organic movements or changes, e.g. tumours, cysts, swellings
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/42—Details of probe positioning or probe attachment to the patient
- A61B8/4209—Details of probe positioning or probe attachment to the patient by using holders, e.g. positioning frames
- A61B8/4218—Details of probe positioning or probe attachment to the patient by using holders, e.g. positioning frames characterised by articulated arms
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
- G01S15/88—Sonar systems specially adapted for specific applications
- G01S15/89—Sonar systems specially adapted for specific applications for mapping or imaging
- G01S15/8906—Short-range imaging systems; Acoustic microscope systems using pulse-echo techniques
- G01S15/8934—Short-range imaging systems; Acoustic microscope systems using pulse-echo techniques using a dynamic transducer configuration
- G01S15/8938—Short-range imaging systems; Acoustic microscope systems using pulse-echo techniques using a dynamic transducer configuration using transducers mounted for mechanical movement in two dimensions
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/52—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00
- G01S7/52017—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00 particularly adapted to short-range imaging
- G01S7/52085—Details related to the ultrasound signal acquisition, e.g. scan sequences
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/18—Methods or devices for transmitting, conducting or directing sound
- G10K11/26—Sound-focusing or directing, e.g. scanning
- G10K11/35—Sound-focusing or directing, e.g. scanning using mechanical steering of transducers or their beams
- G10K11/352—Sound-focusing or directing, e.g. scanning using mechanical steering of transducers or their beams by moving the transducer
- G10K11/355—Arcuate movement
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S128/00—Surgery
- Y10S128/916—Ultrasound 3-D imaging
Abstract
A method and device for three dimensional ultrasonic scanning of a patient is described by which an ultrasonic probe scans image planes oriented in a wedge or fan shaped volume. The probe is moved in an arc of travel about an apex which is below the scanning device and may be adjustably located within the probe or lower, such as between the ribs of the patient. The inventive method and device enable a significant volume of the heart to be scanned intercostally and viewed in a three dimensional image format.
Description
-1- 215731~
THREE DIMENSIONAL ULTRASONIC
SCANNING DEVICES AND TECHNIQUES
This invention relates to devices for ultrasonically scanning and displaying a three dimensional volume, and in particular to ultrasonic sc~nn; ng devices which acquire volumetric ultrasonic data over a wedge shaped volume of a subject.
Various methods and devices have been proposed for ultrasonically scanning a volume within a subject for three dimensional analysis and display. Many of these techniques involve the scAnn; ng of a number of spatially adjacent image planes. The ultrasonic information from these associated planes can be analyzed and displayed on the basis of spatial coordinates of the data within a plane, and on the basis of the spatial relationship of each plane to the others. The information can be displayed in a three dimensional image format such as a perspective view of the volume being imaged.
A number of scanning techniques have been proposed for acquiring these spatially related image planes. U.S. patent 5,353,354, for instance, proposes acquiring and displaying a number of parallel image planes, and a technique for displaying two intersecting image planes. U.S. patent 5,159,931 proposes acquiring and displaying a number of angularly related image planes which intersect at a common axis. The present invention describes another technique, which is to acquire a number of image planes arranged in a fan shaped wedge, with the apex of the wedge located toward the ultrasonic probe.
The fan shaped scanning technique of the present invention has been found to be well suited to cardiac scanning, where the heart is being scanned ISP-ll -2- 21573I ~
intercostally, or through the ribs. Since ultrasonic energy does not transmit efficiently through bone and cartilage, the ultrasonic energy must be transmitted and received through the small apertures between the ribs. This does not present a significant difficulty when a single plane is scanned. Under these conditions the ultrasonic probe can be held at the desired angle to intersect the heart while transmitting and receiving ultrasonic energy between the ribs. However, when a plurality of spatially associated image planes are to be acquired intercostally, the small aperture between the ribs is an impediment to moving the scan plane over the desired volume of the heart without intersecting the ribs. The techniques of the aforementioned patents cannot be used to image the heart efficiently through the ribs, as the rib aperture is too small to permit scanning as described in those patents without interference from the ribcage.
In accordance with the principles of the present invention, a three dimensional ultrasonic scanning technique and a device suitable for performing the technique are described. The inventive technique is to sweep an ultrasonic probe in an arcuate manner so as to scan planes which are spatially oriented in a fan or wedge shape. In a preferred embodiment the apex of the scan volume wedge is just above the point of contact of the ultrasonic probe and the surface of the subject, enabling the intercostal scanning of a wide volume inside the body of a patient. A novel device is described for performing the inventive technique, which locates the apex of the scan volume wedge below the lower surface of the device. Through adjustment of the position of an ultrasonic probe in the device, the apex can be located just above the ISP-ll skin line of the patient, or even between the ribs themselves.
In the drawings:
FIGURE 1 is a top perspective view of an ultrasonic sc~nning device constructed in accordance with the principles of the present invention;
FIGURE 2 is a lower perspective view of the ultrasonic scanning device of FIGURE 1;
FIGURES 3a-3e illustrate the principles of operation of the scanning device of the present invention and also the performance of the sc~nn;ng technique of the present invention;
FIGURES 4a-4d are interior views of the ultrasonic scanning device of FIGURES 1 and 2;
FIGURES 5a and 5b illustrate the mounting of an ultrasonic probe in the ultrasonic scanning device of FIGURES 1 and 2; and FIGURES 6a and 6b illustrate the scanning technique of the present invention by use of the ultrasonic scanning device and probe of FIGURES 5a and 5b.
Referring first to FIGURES 1 and 2, two perspective views of an ultrasonic probe scanning device constructed in accordance with the principles of the present invention are shown. The scanning device includes a main housing 10 and a probe cradle 12. An ultrasonic probe fits into a hole 14 in the probe cradle and is clamped in place by moving a clamp lock switch 64. The probe cradle is detachable form the housing, allowing different cradles with holes for ultrasonic probes of different shapes and sizes to be used. The probe cradle 12 is roc~ed in an arcuate motion, indicated by motion arrows 1 and 2, by the drive mechanism contained in the main housing 10.
ISP-ll 2ls73l4 The scAnning motion developed by the sc~nnin~
device may be appreciated with reference to FIGURES
3a-3e. In these drawings an ultrasonic probe 100 is shown clamped in a probe cradle 12. The probe shown is a mechanically oscillated probe in which an ultrasonic transducer 102 is moved back and forth inside the dome shaped, fluid filled lens cap 104, but the invention is applicable to other types of probes as well. The path of motion of the transducer is orthogonal to the plane of the drawing. Thus, the scan plane over which the transducer transmits and receives ultrasonic energy is also orthogonal to the plane of the drawing and is shown edge-on by the scan plane representation 30.
The drive mechanism of the scanning device is pivotally connected to the probe cradle 12. The probe cradle is connected at the ends of two connecting rods 24 and 26. The connecting rods 24 and 26 are pivotally connected to two triangular crankshafts, an upper crankshaft 20 and a lower crankshaft 22. Each crankshaft has a drive shaft fastened in a hole 28, 29 to move the crankshafts.
The triangular cranks 20, 22 move in planes parallel to the plane of the drawing. Since the cranks move about the positionally fixed shafts, they will move about a reference line 50, which is a common reference from one drawing to the next.
When the crankshafts are in the positions shown in FIGURE 3a the probe cradle 12 and probe 100 are seen to be sharply inclined with respect to the reference line 50. This causes the scan plane 30a to be sharply inclined also. As the crankshafts begin to move clockwise about their pivot points 28, 29 the inclination of the probe cradle, probe and scan plane is lessened as FIGURE 3b shows. As the clockwise 21~73I9 ~_ -5-motion of the cr~nk~h~fts continues the probe and scan plane 30c will reach a vertical alignment with the reference plane as shown in FIGURE 3c. The motion continues to incline the probe to the other side of the vertical position as shown by FIGURE 3d and then FIGURE 3e. The motion of the drive mechanism is then reversed, causing the probe cradle and probe to traverse back through their inclined and vertical positions until they return to the position of FIGURE 3a.
A "+" mark identified by reference numeral 106 is drawn in the dome shaped lens cap 104 of the probe in each figure. It is seen that the + mark is always located on the reference line 50. Hence this reference mark, located at approximately the center of the hemispherical dome, is the apex of the wedge shaped volume that is traversed by the scan planes 3Oa-3Oe. If the ultrasonic probe is clamped in a higher position in the probe cradle the + mark will be located lower toward the tip of the dome, or even in front of the dome.
It has been found that scanning about the center of the hemispherical dome of the lens 104 enables the scan plane to constantly pass through a narrow aperture of the ribs as the probe is moved through its arc of travel. This scanning technique also enables a large wedge shaped volume behind the ribs to be covered by the scan planes. Thus, a significant three dimensional field of view is provided for a given aperture or window between the ribs, enabling three dimensional scanning and imaging of the heart. For a very narrow rib aperture the ultrasonic probe can be clamped further up in the probe cradle, thereby located the + mark apex at the skin surface or even between the ribs of the patient.
ISP~
21~731g It will be appreciated that the scanni ng motion depicted in FIGURE 3 will not roll the dome shaped probe lens 104 back and forth like a ball, but will effect a slight sliding of the lens 104 against the skin of the patient. This slight sliding is facilitated by the ultrasonic gel couplant applied to the lens and the patient for ultrasonic scanning.
FIGURES 4a-4d illustrate the drive mechanism of the main housing 10. In these figures the upper housing cover 16 has been removed. One or both of the housing side covers 32, 34 (also shown in FIGURES
1 and 2) remain in the FIGURE 4 drawings for orientation reference.
In FIGURE 4a the mechanism of the main housing is viewed from the front, the side to which the probe cradle 12 is attached. The probe cradle is attached to two rods 62 extending from holes at the ends of the connecting rods 24 and 26. It will be appreciated that the connecting rods can be made as long as desired to extend the rods 62 and hence the probe cradle further below the bottom of the main housing 10. The connecting rods are connected by screws to the lower crankshaft 22 and the upper crankshaft 20.
FIGURES 4c and 4d show the interior of the main housing from the top and side, respectively. The drive shaft 39 of the upper crankshaft is fastened in the hole 29 of the crank 20 and extends through bearings in a front plate 56 and a rear plate 58 to the rear of the main housing. An end stop detector 60 is located at the end of the drive shaft 39 and optically detects when the shaft has been rotated to either of the limits of its range of rotation. This affords the ability to calibrate the position of the mechanism and also provides an element of safety.
2I ~731~
~_ -7-The end stop detector can be an optical device, a magnetic device or a mechanical device as desired.
The drive shaft 38 of the lower crankshaft is fastened in the hole 28 of the crank and similarly extends through bearings in the front and rear plates to the rear of the main housing. The rotation of the drive shaft 38 also is monitored by an end stop detector at the rear of the shaft.
The drive shafts 38, 39 are driven by a motor 40. In a constructed embodiment an open loop controlled stepper motor was used, but a closed loop controlled DC or stepper motor with a position encoder can also be employed. Each step of the stepper motor increments the scan plane to another position within the volume being scanned. A pulley 42 is connected to the shaft of the motor. A front timing belt 44 is used to drive a large transmission pulley 46 from the motor pulley 42. The large transmission pulley 46 is connected by a shaft extending through bearings in the front and rear plates to a small transmission pulley 47 in a jack shaft arrangement. This transmission configuration results in a rotational reduction that affords significant torque drive for the crankshafts. The rear view of FIGURE 4b illustrates a rear timing belt looped around the small transmission pulley 47, a pulley 48 on the lower crankshaft 38 and a pulley 49 on the upper crankshaft 39 to drive these shafts. An idler 54 maintains the desired tension on the rear timing belt. Thus it is seen that the motor drive is reduced to a lower drive ratio and applied to the drive shafts of both of the crankshafts to rotate them back and forth. The motor may be stepped in one direction, rotating the shafts 38, 39 and incrementally moving the probe cradle in one ISP-ll direction of its arc of travel. The end stop detectors are used during calibration to signal the range of travel limits to the controlling system.
During actual ultrasound data acquisition, the image plane is stepped through any desired angle within these limits.
This sc~nn; ng motion may be appreciated with reference to FIGURES 5a, 5b, 6a and 6b, which show the main housing and probe cradle of FIG~RES 1 and 2 with an ultrasonic probe 100 inserted in the probe cradle 12. The ultrasonic probe has a scan plane marker 108 on one side of the probe. This marker physically protrudes from the case of the probe and marks the side of the scan plane. The probe scan plane marker 108 engages a keyway 74 on one side of the hole 14 of the probe cradle lZ. With the scan plane marker 108 so engaged in the keyway 74, the scan plane of the probe will be orthogonal to the arc of travel of the cradle, indicated by motion arrow 1.
The probe 100 is inserted into the hole 14 to the desired depth, then clamped in place by the clamp lock switch 64. In a constructed embodiment a spring loaded cam and lever arrangement was used for the probe clamp, although other mechanisms may also be found to be suitable.
When the probe is clamped in the probe cradle 12 as shown in FIGURES 5a and 5b the tip of the hemispherical probe lens 104 is approximately 4 cm.
below the bottom 18 of the main housing. The apex of the scan volume about which the lens rotates is also below the bottom of the housing. By keeping this center of rotation below the housing and the probe cradle better access is afforded to the patient.
There is no need to rest the housing on the patient or for the patient to have any contact with the 9 2I~731~
housing. This is an advantage when scanning neonatal patients, for example. In a preferred embodiment the main housing 10 is supported by a series of articulating arms 70, one of which is shown attached to the main housing 10. The articulating arms support the scanning device and also carry signal and control lines 72 to the motor 40 and detectors 60.
FIGURES 5a and 5b show the probe and probe cradle in the vertical position of FIGURE 3c. When the probe cradle is moved in the direction of travel indicated by arrow 1 it can attain the position of FIGURE 3b which is shown in FIGURES 6a and 6b. The crankshafts and connecting rods are pivoted to the left, swinging the probe cradle 12 in an arc to the left as shown by FIGURES 6a and 6b. As the ultrasonic probe is stepped in its arc of travel from one position to another an image plane is scanned by the probe at each position. Each step of the motor provides a position signal indicating the angular orientation of the scan plane at that time with respect to the adjacent planes, and spatial data within a scan plane is provided by the ultrasonic probe in the usual manner. This spatial and position data is recorded by the ultrasound system along with the image information and can be used to display the image information of the fan or wedge shaped scan volume in a three dimensional perspective view, a thickness view in which the scan planes overlay each other, or other three dimensional image formats.
This fan or wedge shaped sc~nn;ng technique has been found to be most advantageous when gathering volumetric ultrasonic image information of the heart from an ultrasonic aperture or window passing between the ribs. The inventive apparatus provides patient comfort, good acoustical contact, and a wide field of ISP-ll -lo- 21 5731 ~
view through the ribs.
The present invention is useful in many diagnostic applications. In addition to the intercostal acquisition of cardiac data sets discussed above, the inventive technique and device have significant application in any sc~nn; ng situation where there is a small aperture, or where there is some other obstacle to access. Some examples of such applications include neonatal cephalic imaging through the fontanelle, where neurologic conditions are diagnosed through the plates of the skull. Trans-orbital imaging of the eye is facilitated by this technique and device, as is imaging of the carotid artery, where the jaw can pose an obstacle to imaging above the carotid bifurcation. Furthermore, scanning by fanning the scan plane about a single point avoids the problem of anatomical irregularities which interfere with other three dimensional scanning techniques such as parallel scan plane acquisition.
ISP-ll
THREE DIMENSIONAL ULTRASONIC
SCANNING DEVICES AND TECHNIQUES
This invention relates to devices for ultrasonically scanning and displaying a three dimensional volume, and in particular to ultrasonic sc~nn; ng devices which acquire volumetric ultrasonic data over a wedge shaped volume of a subject.
Various methods and devices have been proposed for ultrasonically scanning a volume within a subject for three dimensional analysis and display. Many of these techniques involve the scAnn; ng of a number of spatially adjacent image planes. The ultrasonic information from these associated planes can be analyzed and displayed on the basis of spatial coordinates of the data within a plane, and on the basis of the spatial relationship of each plane to the others. The information can be displayed in a three dimensional image format such as a perspective view of the volume being imaged.
A number of scanning techniques have been proposed for acquiring these spatially related image planes. U.S. patent 5,353,354, for instance, proposes acquiring and displaying a number of parallel image planes, and a technique for displaying two intersecting image planes. U.S. patent 5,159,931 proposes acquiring and displaying a number of angularly related image planes which intersect at a common axis. The present invention describes another technique, which is to acquire a number of image planes arranged in a fan shaped wedge, with the apex of the wedge located toward the ultrasonic probe.
The fan shaped scanning technique of the present invention has been found to be well suited to cardiac scanning, where the heart is being scanned ISP-ll -2- 21573I ~
intercostally, or through the ribs. Since ultrasonic energy does not transmit efficiently through bone and cartilage, the ultrasonic energy must be transmitted and received through the small apertures between the ribs. This does not present a significant difficulty when a single plane is scanned. Under these conditions the ultrasonic probe can be held at the desired angle to intersect the heart while transmitting and receiving ultrasonic energy between the ribs. However, when a plurality of spatially associated image planes are to be acquired intercostally, the small aperture between the ribs is an impediment to moving the scan plane over the desired volume of the heart without intersecting the ribs. The techniques of the aforementioned patents cannot be used to image the heart efficiently through the ribs, as the rib aperture is too small to permit scanning as described in those patents without interference from the ribcage.
In accordance with the principles of the present invention, a three dimensional ultrasonic scanning technique and a device suitable for performing the technique are described. The inventive technique is to sweep an ultrasonic probe in an arcuate manner so as to scan planes which are spatially oriented in a fan or wedge shape. In a preferred embodiment the apex of the scan volume wedge is just above the point of contact of the ultrasonic probe and the surface of the subject, enabling the intercostal scanning of a wide volume inside the body of a patient. A novel device is described for performing the inventive technique, which locates the apex of the scan volume wedge below the lower surface of the device. Through adjustment of the position of an ultrasonic probe in the device, the apex can be located just above the ISP-ll skin line of the patient, or even between the ribs themselves.
In the drawings:
FIGURE 1 is a top perspective view of an ultrasonic sc~nning device constructed in accordance with the principles of the present invention;
FIGURE 2 is a lower perspective view of the ultrasonic scanning device of FIGURE 1;
FIGURES 3a-3e illustrate the principles of operation of the scanning device of the present invention and also the performance of the sc~nn;ng technique of the present invention;
FIGURES 4a-4d are interior views of the ultrasonic scanning device of FIGURES 1 and 2;
FIGURES 5a and 5b illustrate the mounting of an ultrasonic probe in the ultrasonic scanning device of FIGURES 1 and 2; and FIGURES 6a and 6b illustrate the scanning technique of the present invention by use of the ultrasonic scanning device and probe of FIGURES 5a and 5b.
Referring first to FIGURES 1 and 2, two perspective views of an ultrasonic probe scanning device constructed in accordance with the principles of the present invention are shown. The scanning device includes a main housing 10 and a probe cradle 12. An ultrasonic probe fits into a hole 14 in the probe cradle and is clamped in place by moving a clamp lock switch 64. The probe cradle is detachable form the housing, allowing different cradles with holes for ultrasonic probes of different shapes and sizes to be used. The probe cradle 12 is roc~ed in an arcuate motion, indicated by motion arrows 1 and 2, by the drive mechanism contained in the main housing 10.
ISP-ll 2ls73l4 The scAnning motion developed by the sc~nnin~
device may be appreciated with reference to FIGURES
3a-3e. In these drawings an ultrasonic probe 100 is shown clamped in a probe cradle 12. The probe shown is a mechanically oscillated probe in which an ultrasonic transducer 102 is moved back and forth inside the dome shaped, fluid filled lens cap 104, but the invention is applicable to other types of probes as well. The path of motion of the transducer is orthogonal to the plane of the drawing. Thus, the scan plane over which the transducer transmits and receives ultrasonic energy is also orthogonal to the plane of the drawing and is shown edge-on by the scan plane representation 30.
The drive mechanism of the scanning device is pivotally connected to the probe cradle 12. The probe cradle is connected at the ends of two connecting rods 24 and 26. The connecting rods 24 and 26 are pivotally connected to two triangular crankshafts, an upper crankshaft 20 and a lower crankshaft 22. Each crankshaft has a drive shaft fastened in a hole 28, 29 to move the crankshafts.
The triangular cranks 20, 22 move in planes parallel to the plane of the drawing. Since the cranks move about the positionally fixed shafts, they will move about a reference line 50, which is a common reference from one drawing to the next.
When the crankshafts are in the positions shown in FIGURE 3a the probe cradle 12 and probe 100 are seen to be sharply inclined with respect to the reference line 50. This causes the scan plane 30a to be sharply inclined also. As the crankshafts begin to move clockwise about their pivot points 28, 29 the inclination of the probe cradle, probe and scan plane is lessened as FIGURE 3b shows. As the clockwise 21~73I9 ~_ -5-motion of the cr~nk~h~fts continues the probe and scan plane 30c will reach a vertical alignment with the reference plane as shown in FIGURE 3c. The motion continues to incline the probe to the other side of the vertical position as shown by FIGURE 3d and then FIGURE 3e. The motion of the drive mechanism is then reversed, causing the probe cradle and probe to traverse back through their inclined and vertical positions until they return to the position of FIGURE 3a.
A "+" mark identified by reference numeral 106 is drawn in the dome shaped lens cap 104 of the probe in each figure. It is seen that the + mark is always located on the reference line 50. Hence this reference mark, located at approximately the center of the hemispherical dome, is the apex of the wedge shaped volume that is traversed by the scan planes 3Oa-3Oe. If the ultrasonic probe is clamped in a higher position in the probe cradle the + mark will be located lower toward the tip of the dome, or even in front of the dome.
It has been found that scanning about the center of the hemispherical dome of the lens 104 enables the scan plane to constantly pass through a narrow aperture of the ribs as the probe is moved through its arc of travel. This scanning technique also enables a large wedge shaped volume behind the ribs to be covered by the scan planes. Thus, a significant three dimensional field of view is provided for a given aperture or window between the ribs, enabling three dimensional scanning and imaging of the heart. For a very narrow rib aperture the ultrasonic probe can be clamped further up in the probe cradle, thereby located the + mark apex at the skin surface or even between the ribs of the patient.
ISP~
21~731g It will be appreciated that the scanni ng motion depicted in FIGURE 3 will not roll the dome shaped probe lens 104 back and forth like a ball, but will effect a slight sliding of the lens 104 against the skin of the patient. This slight sliding is facilitated by the ultrasonic gel couplant applied to the lens and the patient for ultrasonic scanning.
FIGURES 4a-4d illustrate the drive mechanism of the main housing 10. In these figures the upper housing cover 16 has been removed. One or both of the housing side covers 32, 34 (also shown in FIGURES
1 and 2) remain in the FIGURE 4 drawings for orientation reference.
In FIGURE 4a the mechanism of the main housing is viewed from the front, the side to which the probe cradle 12 is attached. The probe cradle is attached to two rods 62 extending from holes at the ends of the connecting rods 24 and 26. It will be appreciated that the connecting rods can be made as long as desired to extend the rods 62 and hence the probe cradle further below the bottom of the main housing 10. The connecting rods are connected by screws to the lower crankshaft 22 and the upper crankshaft 20.
FIGURES 4c and 4d show the interior of the main housing from the top and side, respectively. The drive shaft 39 of the upper crankshaft is fastened in the hole 29 of the crank 20 and extends through bearings in a front plate 56 and a rear plate 58 to the rear of the main housing. An end stop detector 60 is located at the end of the drive shaft 39 and optically detects when the shaft has been rotated to either of the limits of its range of rotation. This affords the ability to calibrate the position of the mechanism and also provides an element of safety.
2I ~731~
~_ -7-The end stop detector can be an optical device, a magnetic device or a mechanical device as desired.
The drive shaft 38 of the lower crankshaft is fastened in the hole 28 of the crank and similarly extends through bearings in the front and rear plates to the rear of the main housing. The rotation of the drive shaft 38 also is monitored by an end stop detector at the rear of the shaft.
The drive shafts 38, 39 are driven by a motor 40. In a constructed embodiment an open loop controlled stepper motor was used, but a closed loop controlled DC or stepper motor with a position encoder can also be employed. Each step of the stepper motor increments the scan plane to another position within the volume being scanned. A pulley 42 is connected to the shaft of the motor. A front timing belt 44 is used to drive a large transmission pulley 46 from the motor pulley 42. The large transmission pulley 46 is connected by a shaft extending through bearings in the front and rear plates to a small transmission pulley 47 in a jack shaft arrangement. This transmission configuration results in a rotational reduction that affords significant torque drive for the crankshafts. The rear view of FIGURE 4b illustrates a rear timing belt looped around the small transmission pulley 47, a pulley 48 on the lower crankshaft 38 and a pulley 49 on the upper crankshaft 39 to drive these shafts. An idler 54 maintains the desired tension on the rear timing belt. Thus it is seen that the motor drive is reduced to a lower drive ratio and applied to the drive shafts of both of the crankshafts to rotate them back and forth. The motor may be stepped in one direction, rotating the shafts 38, 39 and incrementally moving the probe cradle in one ISP-ll direction of its arc of travel. The end stop detectors are used during calibration to signal the range of travel limits to the controlling system.
During actual ultrasound data acquisition, the image plane is stepped through any desired angle within these limits.
This sc~nn; ng motion may be appreciated with reference to FIGURES 5a, 5b, 6a and 6b, which show the main housing and probe cradle of FIG~RES 1 and 2 with an ultrasonic probe 100 inserted in the probe cradle 12. The ultrasonic probe has a scan plane marker 108 on one side of the probe. This marker physically protrudes from the case of the probe and marks the side of the scan plane. The probe scan plane marker 108 engages a keyway 74 on one side of the hole 14 of the probe cradle lZ. With the scan plane marker 108 so engaged in the keyway 74, the scan plane of the probe will be orthogonal to the arc of travel of the cradle, indicated by motion arrow 1.
The probe 100 is inserted into the hole 14 to the desired depth, then clamped in place by the clamp lock switch 64. In a constructed embodiment a spring loaded cam and lever arrangement was used for the probe clamp, although other mechanisms may also be found to be suitable.
When the probe is clamped in the probe cradle 12 as shown in FIGURES 5a and 5b the tip of the hemispherical probe lens 104 is approximately 4 cm.
below the bottom 18 of the main housing. The apex of the scan volume about which the lens rotates is also below the bottom of the housing. By keeping this center of rotation below the housing and the probe cradle better access is afforded to the patient.
There is no need to rest the housing on the patient or for the patient to have any contact with the 9 2I~731~
housing. This is an advantage when scanning neonatal patients, for example. In a preferred embodiment the main housing 10 is supported by a series of articulating arms 70, one of which is shown attached to the main housing 10. The articulating arms support the scanning device and also carry signal and control lines 72 to the motor 40 and detectors 60.
FIGURES 5a and 5b show the probe and probe cradle in the vertical position of FIGURE 3c. When the probe cradle is moved in the direction of travel indicated by arrow 1 it can attain the position of FIGURE 3b which is shown in FIGURES 6a and 6b. The crankshafts and connecting rods are pivoted to the left, swinging the probe cradle 12 in an arc to the left as shown by FIGURES 6a and 6b. As the ultrasonic probe is stepped in its arc of travel from one position to another an image plane is scanned by the probe at each position. Each step of the motor provides a position signal indicating the angular orientation of the scan plane at that time with respect to the adjacent planes, and spatial data within a scan plane is provided by the ultrasonic probe in the usual manner. This spatial and position data is recorded by the ultrasound system along with the image information and can be used to display the image information of the fan or wedge shaped scan volume in a three dimensional perspective view, a thickness view in which the scan planes overlay each other, or other three dimensional image formats.
This fan or wedge shaped sc~nn;ng technique has been found to be most advantageous when gathering volumetric ultrasonic image information of the heart from an ultrasonic aperture or window passing between the ribs. The inventive apparatus provides patient comfort, good acoustical contact, and a wide field of ISP-ll -lo- 21 5731 ~
view through the ribs.
The present invention is useful in many diagnostic applications. In addition to the intercostal acquisition of cardiac data sets discussed above, the inventive technique and device have significant application in any sc~nn; ng situation where there is a small aperture, or where there is some other obstacle to access. Some examples of such applications include neonatal cephalic imaging through the fontanelle, where neurologic conditions are diagnosed through the plates of the skull. Trans-orbital imaging of the eye is facilitated by this technique and device, as is imaging of the carotid artery, where the jaw can pose an obstacle to imaging above the carotid bifurcation. Furthermore, scanning by fanning the scan plane about a single point avoids the problem of anatomical irregularities which interfere with other three dimensional scanning techniques such as parallel scan plane acquisition.
ISP-ll
Claims (15)
1. A method for ultrasonically scanning a volumetric region within the body of a patient by means of an ultrasonic probe controlled to scan a scan plane through an acoustic cap and a device which moves said probe through an arc of travel, comprising the steps of:
locating said probe and device so that the acoustic cap of said probe is in acoustical contact with the body of the patient;
controlling said device to move said probe through an arc of travel while acquiring ultrasonic information from a plurality of scan planes occupying a wedge shaped volume having an apex which is below the surface of said device which opposes the patient;
recording the positions of said scan planes;
and processing the ultrasonic information of said scan planes three dimensionally.
locating said probe and device so that the acoustic cap of said probe is in acoustical contact with the body of the patient;
controlling said device to move said probe through an arc of travel while acquiring ultrasonic information from a plurality of scan planes occupying a wedge shaped volume having an apex which is below the surface of said device which opposes the patient;
recording the positions of said scan planes;
and processing the ultrasonic information of said scan planes three dimensionally.
2. The method of claim 1, wherein said step of controlling comprises the step of controlling said device to move said probe through an arc of travel while acquiring ultrasonic information from a plurality of scan planes occupying a wedge shaped volume having an apex which is between the surface of said device which opposes the points at which said scan planes enter the body of said patient and said points.
3. The method of claim 1, wherein said step of controlling comprises the step of controlling said device to move said probe through an arc of travel while acquiring ultrasonic information from a plurality of scan planes occupying a wedge shaped volume having an apex which is in front of the surface of said device which opposes the patient and is at or beyond the points at which said scan planes enter the body of the patient.
4. The method of claim 3, wherein said step of controlling further comprises controlling said device to move said probe through an arc of travel while acquiring ultrasonic information from a plurality of scan planes occupying a wedge shaped volume having an apex which is between the ribs of the patient.
5. The method of claim 1, wherein said step of processing comprises the step of displaying a three dimensional image of said wedge shaped volume which displays a portion of said wedge shaped volume which is within the body of said patient.
6. The method of claim 1, wherein said step of controlling further comprising controlling said device to move said probe through an arc of travel which is substantially orthogonal to the scan plane of said ultrasonic probe.
7. A device for ultrasonically scanning a wedge shaped volumetric region within the body of a patient by accurately moving an ultrasonic probe controlled to scan a scan plane over said region such that the wedge shape diverges from an apex located proximal to said probe comprising:
probe cradle means for retaining said ultrasonic probe for arcuate travel of said probe and its scan plane about a point of rotation which is in front of the nearest surface of said probe cradle means which opposes the points at which said scan planes enter the body of said patient; and motive means, coupled to said probe cradle means for moving said probe cradle means through its arc of travel, wherein said point of rotation is in front of a plane tangential to the nearest surface of said motive means which opposes the body of said patient when said probe cradle means is oriented in its arc of travel such that said tangential plane and the opposing body of said patient intersected by the scan plane are both substantially parallel and normal to the scan plane of said probe.
probe cradle means for retaining said ultrasonic probe for arcuate travel of said probe and its scan plane about a point of rotation which is in front of the nearest surface of said probe cradle means which opposes the points at which said scan planes enter the body of said patient; and motive means, coupled to said probe cradle means for moving said probe cradle means through its arc of travel, wherein said point of rotation is in front of a plane tangential to the nearest surface of said motive means which opposes the body of said patient when said probe cradle means is oriented in its arc of travel such that said tangential plane and the opposing body of said patient intersected by the scan plane are both substantially parallel and normal to the scan plane of said probe.
8. The device of claim 7, wherein said motive means comprises first and second connecting rods connected to said probe cradle means, and crankshaft means coupled to said connecting rods for rotation about a pivot point.
9. The device of claim 8, further comprising a motor connected to said pivot point of said crankshaft means.
10. The device of claim 9, further comprising a transmission coupled between said motor and said crankshaft means for increasing the torque applied to said crankshaft means from said motor.
11. The device of claim 8, wherein said crank-shaft means comprises a first crankshaft coupled to said connecting rods and a second crankshaft coupled to said connecting rods, each of said crankshafts having a shaft connected at a pivot point.
12. The device of claim 11, wherein said crankshaft pivot points and said point of rotation are aligned in a line.
13. The device of claim 7, wherein said probe cradle means includes a keyway for retaining said ultrasonic probe in a predetermined orientation with respect to said arc of travel.
14. The device of claim 7, further comprising adjustable retaining means for adjusting the position of said ultrasonic probe with respect to said point of rotation.
15. The device of claim 7, further comprising support means coupled to said motive means for supporting said probe cradle means and said motive means away from the surface of the body of a patient.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/333,096 US5487388A (en) | 1994-11-01 | 1994-11-01 | Three dimensional ultrasonic scanning devices and techniques |
| US08/333,096 | 1994-11-01 |
Publications (2)
| Publication Number | Publication Date |
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| CA2157314A1 CA2157314A1 (en) | 1996-05-02 |
| CA2157314C true CA2157314C (en) | 1999-07-06 |
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| CA002157314A Expired - Fee Related CA2157314C (en) | 1994-11-01 | 1995-08-31 | Three dimensional ultrasonic scanning devices and techniques |
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| US (1) | US5487388A (en) |
| EP (1) | EP0713679A1 (en) |
| JP (1) | JPH08229046A (en) |
| CA (1) | CA2157314C (en) |
Families Citing this family (111)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5704361A (en) | 1991-11-08 | 1998-01-06 | Mayo Foundation For Medical Education And Research | Volumetric image ultrasound transducer underfluid catheter system |
| US5325860A (en) | 1991-11-08 | 1994-07-05 | Mayo Foundation For Medical Education And Research | Ultrasonic and interventional catheter and method |
| DE69736549T2 (en) * | 1996-02-29 | 2007-08-23 | Acuson Corp., Mountain View | SYSTEM, METHOD AND CONVERTER FOR ORIENTING MULTIPLE ULTRASOUND IMAGES |
| US5871019A (en) * | 1996-09-23 | 1999-02-16 | Mayo Foundation For Medical Education And Research | Fast cardiac boundary imaging |
| US5846200A (en) * | 1996-11-08 | 1998-12-08 | Advanced Technology Laboratories, Inc. | Ultrasonic diagnostic imaging system for analysis of left ventricular function |
| US6045508A (en) * | 1997-02-27 | 2000-04-04 | Acuson Corporation | Ultrasonic probe, system and method for two-dimensional imaging or three-dimensional reconstruction |
| US5876345A (en) * | 1997-02-27 | 1999-03-02 | Acuson Corporation | Ultrasonic catheter, system and method for two dimensional imaging or three-dimensional reconstruction |
| US6171247B1 (en) | 1997-06-13 | 2001-01-09 | Mayo Foundation For Medical Education And Research | Underfluid catheter system and method having a rotatable multiplane transducer |
| EP0928575B1 (en) | 1997-06-30 | 2005-05-11 | Matsushita Electric Works, Ltd. | Ultrasonic hair curling device |
| US6050943A (en) * | 1997-10-14 | 2000-04-18 | Guided Therapy Systems, Inc. | Imaging, therapy, and temperature monitoring ultrasonic system |
| JPH11221211A (en) | 1997-11-25 | 1999-08-17 | Atl Ultrasound Inc | Scan auxiliary for three-dimensional ultrasonography |
| DE69710932T2 (en) | 1997-12-31 | 2003-09-04 | Ge Ultrasound Israel Ltd | METHOD AND DEVICE FOR DETERMINING THE RELATIVE LOCATION OF TOMOGRAPHIC LAYERS |
| US6059731A (en) | 1998-08-19 | 2000-05-09 | Mayo Foundation For Medical Education And Research | Simultaneous side-and-end viewing underfluid catheter |
| US6080108A (en) * | 1998-11-17 | 2000-06-27 | Atl Ultrasound, Inc. | Scanning aid for quantified three dimensional ultrasonic diagnostic imaging |
| US6398736B1 (en) | 1999-03-31 | 2002-06-04 | Mayo Foundation For Medical Education And Research | Parametric imaging ultrasound catheter |
| CA2295431A1 (en) | 2000-01-06 | 2001-07-06 | Scott Howard Phillips | Ophthalmic apparatus |
| US6887203B2 (en) * | 2000-01-06 | 2005-05-03 | Ultralink Ophthalmics Inc. | Ophthalmological ultrasonography scanning apparatus |
| US7914453B2 (en) * | 2000-12-28 | 2011-03-29 | Ardent Sound, Inc. | Visual imaging system for ultrasonic probe |
| US20040243147A1 (en) * | 2001-07-03 | 2004-12-02 | Lipow Kenneth I. | Surgical robot and robotic controller |
| US7204807B2 (en) * | 2001-07-24 | 2007-04-17 | Sunlight Medical Ltd. | Joint analysis using ultrasound |
| WO2003009758A1 (en) | 2001-07-24 | 2003-02-06 | Sunlight Medical, Ltd. | Bone age assessment using ultrasound |
| FR2839543B1 (en) * | 2002-05-07 | 2004-08-27 | Quantel Medical | SCANNING SYSTEM BASED ON AN ARCIFORM PATH WITH VARIABLE CURVE RADIUS |
| GB2391625A (en) | 2002-08-09 | 2004-02-11 | Diagnostic Ultrasound Europ B | Instantaneous ultrasonic echo measurement of bladder urine volume with a limited number of ultrasound beams |
| US20090112089A1 (en) * | 2007-10-27 | 2009-04-30 | Bill Barnard | System and method for measuring bladder wall thickness and presenting a bladder virtual image |
| US20100036252A1 (en) * | 2002-06-07 | 2010-02-11 | Vikram Chalana | Ultrasound system and method for measuring bladder wall thickness and mass |
| US20080262356A1 (en) * | 2002-06-07 | 2008-10-23 | Vikram Chalana | Systems and methods for ultrasound imaging using an inertial reference unit |
| US20090062644A1 (en) * | 2002-06-07 | 2009-03-05 | Mcmorrow Gerald | System and method for ultrasound harmonic imaging |
| US8221321B2 (en) | 2002-06-07 | 2012-07-17 | Verathon Inc. | Systems and methods for quantification and classification of fluids in human cavities in ultrasound images |
| US7520857B2 (en) * | 2002-06-07 | 2009-04-21 | Verathon Inc. | 3D ultrasound-based instrument for non-invasive measurement of amniotic fluid volume |
| US20060025689A1 (en) * | 2002-06-07 | 2006-02-02 | Vikram Chalana | System and method to measure cardiac ejection fraction |
| US7819806B2 (en) * | 2002-06-07 | 2010-10-26 | Verathon Inc. | System and method to identify and measure organ wall boundaries |
| US20040127797A1 (en) * | 2002-06-07 | 2004-07-01 | Bill Barnard | System and method for measuring bladder wall thickness and presenting a bladder virtual image |
| US8221322B2 (en) | 2002-06-07 | 2012-07-17 | Verathon Inc. | Systems and methods to improve clarity in ultrasound images |
| US6905468B2 (en) * | 2002-09-18 | 2005-06-14 | Diagnostic Ultrasound Corporation | Three-dimensional system for abdominal aortic aneurysm evaluation |
| US20040254466A1 (en) * | 2003-06-16 | 2004-12-16 | James Boner | Apparatus and method for real time three-dimensional ultrasound imaging |
| US7239693B2 (en) * | 2003-06-30 | 2007-07-03 | Bellsouth Intellectual Property Corporation | Network-based timed ring suppression |
| FR2866801B1 (en) * | 2004-02-27 | 2006-12-01 | Quantel Medical | SECTORAL SCANNING ECHOGRAPHIC PROBE USING A TRANSDUCER FUTURE TO COME IN CONTACT WITH THE STRUCTURE TO BE EXAMINED |
| US8235909B2 (en) * | 2004-05-12 | 2012-08-07 | Guided Therapy Systems, L.L.C. | Method and system for controlled scanning, imaging and/or therapy |
| US7393325B2 (en) | 2004-09-16 | 2008-07-01 | Guided Therapy Systems, L.L.C. | Method and system for ultrasound treatment with a multi-directional transducer |
| US7824348B2 (en) | 2004-09-16 | 2010-11-02 | Guided Therapy Systems, L.L.C. | System and method for variable depth ultrasound treatment |
| US9011336B2 (en) | 2004-09-16 | 2015-04-21 | Guided Therapy Systems, Llc | Method and system for combined energy therapy profile |
| US8535228B2 (en) | 2004-10-06 | 2013-09-17 | Guided Therapy Systems, Llc | Method and system for noninvasive face lifts and deep tissue tightening |
| US10864385B2 (en) | 2004-09-24 | 2020-12-15 | Guided Therapy Systems, Llc | Rejuvenating skin by heating tissue for cosmetic treatment of the face and body |
| US8444562B2 (en) | 2004-10-06 | 2013-05-21 | Guided Therapy Systems, Llc | System and method for treating muscle, tendon, ligament and cartilage tissue |
| US20060111744A1 (en) | 2004-10-13 | 2006-05-25 | Guided Therapy Systems, L.L.C. | Method and system for treatment of sweat glands |
| US7758524B2 (en) * | 2004-10-06 | 2010-07-20 | Guided Therapy Systems, L.L.C. | Method and system for ultra-high frequency ultrasound treatment |
| US9827449B2 (en) | 2004-10-06 | 2017-11-28 | Guided Therapy Systems, L.L.C. | Systems for treating skin laxity |
| US9694212B2 (en) | 2004-10-06 | 2017-07-04 | Guided Therapy Systems, Llc | Method and system for ultrasound treatment of skin |
| US11883688B2 (en) | 2004-10-06 | 2024-01-30 | Guided Therapy Systems, Llc | Energy based fat reduction |
| KR20140013044A (en) * | 2004-10-06 | 2014-02-04 | 가이디드 테라피 시스템스, 엘.엘.씨. | System for controlled thermal treatment of human superficial tissue |
| US8690778B2 (en) | 2004-10-06 | 2014-04-08 | Guided Therapy Systems, Llc | Energy-based tissue tightening |
| KR101732144B1 (en) | 2004-10-06 | 2017-05-02 | 가이디드 테라피 시스템스, 엘.엘.씨. | Ultrasound treatment system |
| EP2279696A3 (en) | 2004-10-06 | 2014-02-26 | Guided Therapy Systems, L.L.C. | Method and system for non-invasive mastopexy |
| US11235179B2 (en) | 2004-10-06 | 2022-02-01 | Guided Therapy Systems, Llc | Energy based skin gland treatment |
| US8133180B2 (en) | 2004-10-06 | 2012-03-13 | Guided Therapy Systems, L.L.C. | Method and system for treating cellulite |
| US11724133B2 (en) | 2004-10-07 | 2023-08-15 | Guided Therapy Systems, Llc | Ultrasound probe for treatment of skin |
| US20060079868A1 (en) * | 2004-10-07 | 2006-04-13 | Guided Therapy Systems, L.L.C. | Method and system for treatment of blood vessel disorders |
| US11207548B2 (en) | 2004-10-07 | 2021-12-28 | Guided Therapy Systems, L.L.C. | Ultrasound probe for treating skin laxity |
| US8162831B2 (en) * | 2004-12-17 | 2012-04-24 | Ultra-Scan Corporation | Hand scanner with moveable platen |
| US7571336B2 (en) | 2005-04-25 | 2009-08-04 | Guided Therapy Systems, L.L.C. | Method and system for enhancing safety with medical peripheral device by monitoring if host computer is AC powered |
| US9566454B2 (en) | 2006-09-18 | 2017-02-14 | Guided Therapy Systems, Llc | Method and sysem for non-ablative acne treatment and prevention |
| WO2008036773A1 (en) * | 2006-09-19 | 2008-03-27 | Guided Therapy Systems, Llc | Method and system for treating muscle, tendon, ligament and cartilage tissue |
| US9241683B2 (en) | 2006-10-04 | 2016-01-26 | Ardent Sound Inc. | Ultrasound system and method for imaging and/or measuring displacement of moving tissue and fluid |
| WO2008060001A1 (en) * | 2006-11-17 | 2008-05-22 | Ondemandsoft Co., Ltd. | Scanning aid device of ultrasound examination |
| US7942060B2 (en) * | 2007-03-06 | 2011-05-17 | Eigen, Inc. | Universal ultrasound holder and rotation device |
| TWI526233B (en) | 2007-05-07 | 2016-03-21 | 指導治療系統股份有限公司 | Methods and systems for modulating medicants using acoustic energy |
| DK2152167T3 (en) | 2007-05-07 | 2018-12-10 | Guided Therapy Systems Llc | Methods and systems for coupling and focusing acoustic energy using a coupling element |
| US20150174388A1 (en) | 2007-05-07 | 2015-06-25 | Guided Therapy Systems, Llc | Methods and Systems for Ultrasound Assisted Delivery of a Medicant to Tissue |
| US8167803B2 (en) * | 2007-05-16 | 2012-05-01 | Verathon Inc. | System and method for bladder detection using harmonic imaging |
| US10531859B2 (en) | 2008-01-02 | 2020-01-14 | Arcscan, Inc. | Components for a precision ultrasonic scanning apparatus for body parts |
| JP2011508651A (en) | 2008-01-02 | 2011-03-17 | アークスキャン インコーポレイテッド | Imaging device, ultrasonic arc scanning device, and ultrasonic scanning device |
| WO2009124271A1 (en) | 2008-04-03 | 2009-10-08 | Arcscan, Inc. | Procedures for an ultrasonic arc scanning apparatus |
| WO2009146434A1 (en) * | 2008-05-29 | 2009-12-03 | Arcscan, Inc. | Compound scanning head for an ultrasonic scanning apparatus |
| DK2282675T3 (en) | 2008-06-06 | 2016-05-17 | Ulthera Inc | Cosmetic treatment and imaging system |
| US8225998B2 (en) * | 2008-07-11 | 2012-07-24 | Es&S Innovations Llc | Secure ballot box |
| WO2010017508A1 (en) * | 2008-08-07 | 2010-02-11 | Verathon Inc. | Device, system, and method to measure abdominal aortic aneurysm diameter |
| US9149254B2 (en) | 2008-12-15 | 2015-10-06 | Arcscan, Inc. | Alignment and imaging of an eye with an ultrasonic scanner |
| CA2784538C (en) | 2008-12-15 | 2016-12-06 | Arc-San, Inc. | Alignment and imaging of an eye with an ultrasonic scanner |
| CA2748362A1 (en) | 2008-12-24 | 2010-07-01 | Michael H. Slayton | Methods and systems for fat reduction and/or cellulite treatment |
| US8510883B2 (en) * | 2009-10-30 | 2013-08-20 | Arcscan, Inc. | Method of positioning a patient for medical procedures |
| US8715186B2 (en) * | 2009-11-24 | 2014-05-06 | Guided Therapy Systems, Llc | Methods and systems for generating thermal bubbles for improved ultrasound imaging and therapy |
| US9504446B2 (en) | 2010-08-02 | 2016-11-29 | Guided Therapy Systems, Llc | Systems and methods for coupling an ultrasound source to tissue |
| KR20200004466A (en) | 2010-08-02 | 2020-01-13 | 가이디드 테라피 시스템스, 엘.엘.씨. | System and Method for Ultrasound Treatment |
| US8857438B2 (en) | 2010-11-08 | 2014-10-14 | Ulthera, Inc. | Devices and methods for acoustic shielding |
| US9452302B2 (en) | 2011-07-10 | 2016-09-27 | Guided Therapy Systems, Llc | Systems and methods for accelerating healing of implanted material and/or native tissue |
| KR20140047709A (en) | 2011-07-11 | 2014-04-22 | 가이디드 테라피 시스템스, 엘.엘.씨. | Systems and methods for coupling an ultrasound source to tissue |
| US9877699B2 (en) | 2012-03-26 | 2018-01-30 | Teratech Corporation | Tablet ultrasound system |
| WO2013142978A1 (en) | 2012-03-28 | 2013-10-03 | University Of Western Ontario | Actuator for moving an ultrasound probe |
| US9263663B2 (en) | 2012-04-13 | 2016-02-16 | Ardent Sound, Inc. | Method of making thick film transducer arrays |
| US9597059B2 (en) | 2012-05-17 | 2017-03-21 | Arcscan, Inc. | Correcting for unintended motion for ultrasonic eye scans |
| US9320427B2 (en) | 2012-07-09 | 2016-04-26 | Arcscan, Inc. | Combination optical and ultrasonic imaging of an eye |
| US9510802B2 (en) | 2012-09-21 | 2016-12-06 | Guided Therapy Systems, Llc | Reflective ultrasound technology for dermatological treatments |
| US9131922B2 (en) | 2013-01-29 | 2015-09-15 | Eigen, Inc. | Calibration for 3D reconstruction of medical images from a sequence of 2D images |
| CN204637350U (en) | 2013-03-08 | 2015-09-16 | 奥赛拉公司 | Aesthstic imaging and processing system, multifocal processing system and perform the system of aesthetic procedure |
| US10561862B2 (en) | 2013-03-15 | 2020-02-18 | Guided Therapy Systems, Llc | Ultrasound treatment device and methods of use |
| WO2015127417A1 (en) | 2014-02-24 | 2015-08-27 | Arcscan, Inc. | Disposable eyepiece system for an ultrasonic eye scanning apparatus |
| SG11201608691YA (en) | 2014-04-18 | 2016-11-29 | Ulthera Inc | Band transducer ultrasound therapy |
| US11357474B2 (en) | 2014-09-15 | 2022-06-14 | Peter Fedor | Method of quantitative analysis and imaging of the anterior segment of the eye |
| WO2016207889A1 (en) | 2015-06-23 | 2016-12-29 | Hemonitor Medical Ltd. | Continuous ultrasonic monitoring |
| US10792011B2 (en) | 2015-06-23 | 2020-10-06 | Hemonitor Medical Ltd. | Systems and methods for hand-free continuous ultrasonic monitoring |
| US10849650B2 (en) | 2015-07-07 | 2020-12-01 | Eigen Health Services, Llc | Transperineal needle guidance |
| US11426611B2 (en) | 2015-10-13 | 2022-08-30 | Arcscan, Inc. | Ultrasound therapeutic and scanning apparatus |
| WO2017066460A1 (en) | 2015-10-13 | 2017-04-20 | Arcscan, Inc | Ultrasonic scanning apparatus |
| KR102615327B1 (en) | 2016-01-18 | 2023-12-18 | 얼테라, 인크 | Compact ultrasonic device with annular ultrasonic array locally electrically connected to a flexible printed circuit board and method of assembling the same |
| KR102593310B1 (en) | 2016-08-16 | 2023-10-25 | 얼테라, 인크 | Ultrasound imaging system configured to reduce imaging misalignment, ultrasound imaging module, and method for reducing imaging misalignment |
| US10631831B2 (en) * | 2016-09-23 | 2020-04-28 | General Electric Company | Methods and systems for adjusting a field of view for medical imaging systems |
| EP3562404A4 (en) * | 2016-12-27 | 2020-09-09 | Hemonitor Medical Ltd. | Systems and methods for hand-free continuous ultrasonic monitoring |
| US11944849B2 (en) | 2018-02-20 | 2024-04-02 | Ulthera, Inc. | Systems and methods for combined cosmetic treatment of cellulite with ultrasound |
| US11564656B2 (en) | 2018-03-13 | 2023-01-31 | Verathon Inc. | Generalized interlaced scanning with an ultrasound probe |
| CN109965907A (en) * | 2019-04-30 | 2019-07-05 | 中国医学科学院生物医学工程研究所 | A kind of camber line scanning head and application method for ophthalmic ultrasonic biomicroscope |
| JP2023517556A (en) * | 2020-04-02 | 2023-04-26 | エアーズ メディカル カンパニー リミテッド | Automated body invasive device |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4167180A (en) * | 1975-05-01 | 1979-09-11 | The Commonwealth Of Australia, Care Of The Department Of Health | Method and apparatus for ultrasonic examination |
| US4272991A (en) * | 1979-02-09 | 1981-06-16 | Litton Industrial Products, Inc. | Scanning method and apparatus |
| US4341120A (en) * | 1979-11-09 | 1982-07-27 | Diasonics Cardio/Imaging, Inc. | Ultrasonic volume measuring system |
| US4637256A (en) * | 1983-06-23 | 1987-01-20 | Matsushita Electric Industrial Co., Ltd. | Ultrasonic probe having dual-motion transducer |
| US4747411A (en) * | 1984-03-28 | 1988-05-31 | National Biochemical Research Foundation | Three-dimensional imaging system |
| US4932414A (en) * | 1987-11-02 | 1990-06-12 | Cornell Research Foundation, Inc. | System of therapeutic ultrasound and real-time ultrasonic scanning |
| US5159931A (en) * | 1988-11-25 | 1992-11-03 | Riccardo Pini | Apparatus for obtaining a three-dimensional reconstruction of anatomic structures through the acquisition of echographic images |
| EP0432771B1 (en) * | 1989-12-14 | 1996-06-05 | Aloka Co. Ltd. | Three-dimensional ultrasonic scanner |
| DE69020723T2 (en) * | 1990-04-20 | 1996-01-18 | Hiroshi Furuhata | Device for ultrasound diagnosis. |
| GB9025431D0 (en) * | 1990-11-22 | 1991-01-09 | Advanced Tech Lab | Three dimensional ultrasonic imaging |
| DE4040307C2 (en) * | 1990-12-17 | 1996-03-07 | Eden Medizinische Elektronik G | Device for positioning a Doppler signal generator and / or sensor |
| JP3187148B2 (en) * | 1991-08-26 | 2001-07-11 | 株式会社東芝 | Ultrasound diagnostic equipment |
| JPH0773576B2 (en) * | 1992-05-27 | 1995-08-09 | アロカ株式会社 | Ultrasonic probe for 3D data acquisition |
| CA2110148C (en) * | 1992-12-24 | 1999-10-05 | Aaron Fenster | Three-dimensional ultrasound imaging system |
| US5331962A (en) * | 1993-04-16 | 1994-07-26 | Cornell Research Foundation Inc. | Ultrasound system for corneal biometry |
-
1994
- 1994-11-01 US US08/333,096 patent/US5487388A/en not_active Expired - Fee Related
-
1995
- 1995-08-31 CA CA002157314A patent/CA2157314C/en not_active Expired - Fee Related
- 1995-10-31 JP JP7305152A patent/JPH08229046A/en active Pending
- 1995-10-31 EP EP95307757A patent/EP0713679A1/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| EP0713679A1 (en) | 1996-05-29 |
| CA2157314A1 (en) | 1996-05-02 |
| US5487388A (en) | 1996-01-30 |
| JPH08229046A (en) | 1996-09-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed | ||
| MKLA | Lapsed |
Effective date: 20020903 |