초록 ▼

An ultrasonic diagnostic apparatus has an ultrasonic endoscope, an ultrasonic observing portion, a position detecting unit, a monitor, a keyboard, and a mouse. Cross-sectional planes in parallel therewith are set to radial tomographic images, an intersecting line segment is obtained between a radial

An ultrasonic diagnostic apparatus has an ultrasonic endoscope, an ultrasonic observing portion, a position detecting unit, a monitor, a keyboard, and a mouse. Cross-sectional planes in parallel therewith are set to radial tomographic images, an intersecting line segment is obtained between a radial tomographic image and the cross-sectional plane, the intersecting line segments are combined, and a route tomographic image is generated. It is easily recognized how the lesion is spreading along the luminal portion during the examination by advancing and returning a radial scanning ultrasonic probe. Further, which part in the luminal portion is scanning during the examination can easily be recognized during the examination.

대표청구항 ▼

The invention claimed is: 1. An ultrasonic diagnostic apparatus which advances and returns a radial scanning ultrasonic vibrator in the living body of a subject and generates a plurality of time-series radial tomographic images in accordance with the advance and return, the ultrasonic diagnostic ap

The invention claimed is: 1. An ultrasonic diagnostic apparatus which advances and returns a radial scanning ultrasonic vibrator in the living body of a subject and generates a plurality of time-series radial tomographic images in accordance with the advance and return, the ultrasonic diagnostic apparatus comprising: positional information detecting means which detects positional information of the radial scanning ultrasonic vibrator upon obtaining the radial tomographic image; a cross-sectional plane setting section which sets a cross-sectional plane for generating a route tomographic image of and along a route of the advance and return of the radial scanning ultrasonic vibrator; and route tomographic generating means which generates the route tomographic image on an image drawing plane which is parallel with the cross-sectional plane, based on the positional information obtained from the positional information detecting means and the plurality of the time-series radial tomographic images. 2. An ultrasonic diagnostic apparatus according to claim 1, further comprising: intersecting line segment extracting means which obtains an intersecting line segment between the radial tomographic image and each of a plurality of parallel planes passing through the center of the plurality of radial tomographic images, wherein the route tomographic image generating means generates the route tomographic image based on a plurality of intersecting line segments obtained by the intersecting line segment extracting means. 3. An ultrasonic diagnostic apparatus according to claim 2, wherein the intersecting line segment extracting means extracts the intersecting line segment every obtaining a new radial tomographic image, and the route tomographic image generating means generates the route tomographic image every extracting a new intersecting line segment. 4. An ultrasonic diagnostic apparatus according to claim 1, wherein the radial scanning ultrasonic probe is an electric radial scanning ultrasonic probe. 5. An ultrasonic diagnostic apparatus according to claim 1, wherein the radial scanning ultrasonic probe is arranged in a capsule inserted in the body cavity. 6. An ultrasonic diagnostic apparatus according to claim 5, wherein the capsule has a motor which rotates the ultrasonic vibrator. 7. An ultrasonic diagnostic apparatus which generates a new tomographic image based on a plurality of radial tomographic images obtained by an advancing and returning route of a radial scanning ultrasonic probe in the body cavity of a subject, the ultrasonic diagnostic apparatus comprising: positional and directional detecting means which detects positions and directions of the plurality of radial tomographic images; a cross-sectional plane setting section which sets a cross-sectional plane for generating a route tomographic image of and along a route of the advance and return of the radial scanning ultrasonic vibrator; and route tomographic image generating means which generates the route tomographic image on an image drawing plane which is parallel to the cross-sectional plane, based on the position and the direction. 8. An ultrasonic diagnostic apparatus according to claim 7, further comprising: intersecting line segment extracting means which obtains an intersecting line segment between the radial tomographic image and each of a plurality of parallel planes passing through the center of the plurality of radial tomographic images, wherein the route tomographic image generating means generates the route tomographic image based on a plurality of the intersecting line segments obtained by the intersecting line segment extracting means. 9. An ultrasonic diagnostic apparatus according to claim 8, wherein the intersecting line segment extracting means extracts the intersecting line segment every obtaining a new one of the radial tomographic images, and the route tomographic image generating means generates the route tomographic image every extracting a new intersecting line segment. 10. An ultrasonic diagnostic apparatus according to claim 9, further comprising: display means which comparably displays the radial tomographic image and the route tomographic image, wherein the display means superimposes and displays an intersecting-line-segment marker indicating the intersecting line segment on at least one of the radial tomographic image and the route tomographic image. 11. An ultrasonic diagnostic apparatus according to claim 10, further comprising: setting means which sets the position of the intersecting-line-segment marker, wherein the display means updates and displays the radial tomographic image or the route tomographic image in conjunction with the setting of the position of the intersecting-line-segment marker. 12. An ultrasonic diagnostic apparatus according to claim 10, wherein the intersecting line segment extracting means extracts the intersecting line segment between the already-formed route tomographic image and the radial scanning plane during the scanning, and the display means superimposes and displays the intersecting-line-segment marker indicating the intersecting line segment, as a guide of the radial scanning plane during the scanning, on the already-formed route tomographic image. 13. An ultrasonic diagnostic apparatus according to claim 8, further comprising: display means which comparably displays the radial tomographic image and the route tomographic image, wherein the display means superimposes and displays an intersecting-line-segment marker indicating the intersecting line segment on at least one of the radial tomographic image and the route tomographic image. 14. An ultrasonic diagnostic apparatus according to claim 13, further comprising: setting means which sets the position of the intersecting-line-segment marker, wherein the display means updates and displays the radial tomographic image or the route tomographic image in conjunction with the setting of the position of the intersecting-line-segment marker. 15. An ultrasonic diagnostic apparatus according to claim 13, wherein the intersecting line segment extracting means extracts the intersecting line segment between the already-formed route tomographic image and the radial scanning plane during the scanning, and the display means superimposes and displays the intersecting-line-segment marker indicating the intersecting line segment, as a guide of the radial scanning plane during the scanning, on the already-formed route tomographic image. 16. An ultrasonic diagnostic method for advancing and returning a radial scanning ultrasonic vibrator in the living body of a subject and generating a plurality of time-series radial tomographic images in accordance with the advance and return, the ultrasonic diagnostic method comprising: a positional information detecting step of detecting positional information of the radial scanning ultrasonic vibrator upon obtaining the radial tomographic image; a cross-sectional plane setting step of setting a cross-sectional plane for generating a route tomographic image of and along a route of the advance and return of the radial scanning ultrasonic vibrator; and a route tomographic generating step of generating the route tomographic image on an image drawing plane which is parallel with the cross-sectional plane, based on the positional information obtained by the positional information detecting step and the plurality of the time-series radial tomographic images. 17. An ultrasonic diagnosis method according to claim 16, wherein the radial scanning ultrasonic probe is an electric radial scanning ultrasonic probe. 18. An ultrasonic diagnostic method according to claim 16, wherein the radial scanning ultrasonic probe is arranged in a capsule inserted in the body cavity. 19. An ultrasonic diagnostic method according to claim 18, wherein the capsule has a motor which rotates the ultrasonic vibrator. 20. An ultrasonic diagnostic method for generating a new tomographic image based on a plurality of radial tomographic images obtained by an advancing and returning route of a radial scanning ultrasonic probe in the body cavity of a subject, the ultrasonic diagnosis method comprising: a position and direction detecting step of detecting positions and directions of the plurality of radial tomographic images; a cross-sectional plane setting step of setting a cross-sectional plane for generating a route tomographic image of and along a route of the advance and return of the radial scanning ultrasonic vibrator; and a route tomographic generating step of generating the route tomographic image on an image drawing plane which is parallel with the cross-sectional plane, based on the position and the direction.