Three-dimensional image capture system and particle beam therapy system

Patent metadata

Field	Value
Publication number	US-9913996-B2
Application number	US-201214419393-A
Country	US
Kind code	B2
Filing date	Nov 5, 2012
Priority date	Nov 5, 2012
Publication date	Mar 13, 2018
Grant date	Mar 13, 2018

Abstract

According to a three-dimensional image capture system of the invention, it includes a three-dimensional measuring device that is placed on a top board and performs image-capturing of a patient to thereby generate three-dimensional-image data, and a three-dimensional-image processing device that generates from the three-dimensional-image data, a three-dimensional image associated with a reference coordinate system with reference to the top board or a floor of a room, and that displays the three-dimensional image. The three-dimensional-image processing device includes a position-information extraction unit that takes a correlation between the reference coordinate system and three-dimensional position information of the patient in the three-dimensional-image data to thereby generate reference-coordinate-system position information of the patient based on the reference coordinate system, and a display unit that displays the three-dimensional image, wherein the display unit displays a reference image and an observed image that are the three-dimensional images captured at different timings.

First claim

The invention claimed is:

1. A three-dimensional image capture system for image-capturing a patient laid on a top board of a patient support table, comprising:
a three-dimensional measuring device that is placed on the top board of the patient support table, and performs image-capturing of the patient (i) after completion of image-matching positioning, (ii) without using an X-ray, and (iii) after movement of the patient, on the patient support table, to a therapeutic irradiation position, to thereby generate three-dimensional-image data; and
a processing device, including a display device, configured to:
generate, from the three-dimensional-image data, a three-dimensional image associated with a reference coordinate system which is a top-board coordinate system with reference to the top board or a room coordinate system with reference to a floor of a room in which the patient support table is placed, and that displays the three-dimensional image;
take a correlation between the reference coordinate system and three-dimensional position information of the patient in the three-dimensional-image data, to thereby generate reference-coordinate-system position information of the patient based on the reference coordinate system; and
display, on the display device of the processing device, the three-dimensional image in which the three-dimensional-image data and the reference-coordinate-system position information are consolidated; and
display, on the display device, a reference image that is a three-dimensional image captured in a condition where a diseased-site region of the patient is being positioned relative to the top board, and an observed image that is a three-dimensional image captured at a timing different to a timing at which the reference image was captured.

2. The three-dimensional image capture system of claim 1 , wherein
the processing device is further configured to combine a plurality of image data, each being the three-dimensional-image data, captured individually for a plurality of imaging regions by the three-dimensional measuring device at close timings, on the basis of the reference-coordinate-system position information generated by the processing device, to thereby generate combined three-dimensional-image data, and
wherein the display device, of the processing device, regards as the three-dimensional image, a combined three-dimensional image in which the combined three-dimensional-image data and the reference-coordinate-system position information are consolidated.

3. The three-dimensional image capture system of claim 2 , wherein the processing device displays, on the display device, the reference image and the observed image captured at the different timings, to be overlapped with each other in such a manner that their same coordinate in the reference coordinate system is placed at a same position.

4. The three-dimensional image capture system of claim 2 , wherein the processing device is further configured to compare, according to the reference coordinate system, first three-dimensional-image data given as the three-dimensional image-data or the combined three-dimensional-image data captured at a first timing, with second three-dimensional-image data given as the three-dimensional image-data or the combined three-dimensional-image data captured at a timing later than the first timing, and that displays a comparison result on the display device.

5. The three-dimensional image capture system of claim 1 , comprising a plurality of three-dimensional measuring devices as the three-dimensional measuring device,
wherein the processing device is configured to combine a plurality of image data, each being the three-dimensional-image data, captured individually for a plurality of imaging regions by the plurality of three-dimensional measuring devices at substantially the same timings, on the basis of the reference-coordinate-system position information generated by the position-information extraction unit, to thereby generate combined three-dimensional-image data, and
wherein the display device, of the processing device, regards as the three-dimensional image, combined three-dimensional image in which the combined three-dimensional-image data and the reference-coordinate-system position information are consolidated.

6. The three-dimensional image capture system of claim 5 , wherein the processing device displays, on the display device, the reference image and the observed image captured at the different timings, to be overlapped with each other in such a manner that their same coordinate in the reference coordinate system is placed at a same position.

7. The three-dimensional image capture system of claim 5 , wherein the processing device is further configured to compare, according to the reference coordinate system, first three-dimensional-image data given as the three-dimensional image-data or the combined three-dimensional-image data captured at a first timing, with second three-dimensional-image data given as the three-dimensional image-data or the combined three-dimensional-image data captured at a timing later than the first timing, and that displays a comparison result on the display device.

8. The three-dimensional image capture system of claim 1 , wherein the processing device displays, on the display device, the reference image and the observed image captured at the different timings, to be overlapped with each other in such a manner that their same coordinate in the reference coordinate system is placed at a same position.

9. The three-dimensional image capture system of claim 1 , wherein the processing device is configured to compare, according to the reference coordinate system, first three-dimensional-image data given as the three-dimensional image-data or the combined three-dimensional-image data captured at a first timing, with second three-dimensional-image data given as the three-dimensional image-data or the combined three-dimensional-image data captured at a timing later than the first timing, and that displays a comparison result on the display device.

10. The three-dimensional image capture system of claim 9 , wherein the processing device displays a differential image that is a difference according to the reference coordinate system between the first three-dimensional-image data and the second three-dimensional-image data, to be overlapped with the reference image based on the first three-dimensional-image data or the observed image based on the second three-dimensional-image data.

11. The three-dimensional image capture system of claim 1 , wherein the reference coordinate system is the top-board coordinate system and the processing device generates the reference-coordinate-system position information on the basis of coordinates of a plurality of positional references on the top board.

12. The three-dimensional image capture system of claim 1 , wherein the reference coordinate system is the room coordinate system, and the processing device generates the reference-coordinate-system position information on the basis of: coordinates of a plurality of room-positional references provided in an imaging region of the three-dimensional measuring device on an immobile portion of a room-structure object of the room in which the patient support table is placed; and coordinates of a plurality of positional references on the top board.

13. The three-dimensional image capture system of claim 12 , further comprising another three-dimensional measuring device that image-captures simultaneously, at least one of the plurality of room-positional references provided on the immobile portion of the room-structure object and at least one of the plurality

Assignees

• Takahashi Osamu
• Mitsubishi Electric Corp

Inventors

• Takahashi Osamu

Classifications

• G01B11/24

  for measuring contours or curvatures · CPC title

• G01B11/002

  for measuring two or more coordinates · CPC title

• A61N5/1049 Primary

  for verifying the position of the patient with respect to the radiation beam · CPC title

• A61N2005/1094

  Shielding, protecting against radiation · CPC title

• G01B11/10

  of objects while moving · CPC title