THREE-DIMENSIONAL IMAGE CAPTURE SYSTEM AND PARTICLE BEAM THERAPY SYSTEM

• US 20150161793A1
• Filed: 11/05/2012
• Published: 06/11/2015
• Est. Priority Date: 11/05/2012
• Status: Abandoned Application

• Current Assignee: Mitsubishi Electric Corporation
• Original Assignee: Mitsubishi Electric Corporation
• Inventors: Takahashi, Osamu
• Application Number:
  US14/419,397
• Publication Number:
  US 20150161793A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: A61B 2034/2055 Optical tracking systems
• CPC Class Codes: A61B 2034/2065 Tracking using image or pattern recognition
• CPC Class Codes: A61B 2090/364 Correlation of different images or relation of image positions in respect to the body
• CPC Class Codes: A61B 90/37 Surgical systems with images on a monitor during operation
• CPC Class Codes: A61N 2005/1059 using cameras imaging the patient
• CPC Class Codes: A61N 2005/1087 Ions; Protons
• CPC Class Codes: A61N 5/1049 for verifying the position of the patient with respect to the radiation beam
• CPC Class Codes: A61N 5/1077 Beam delivery systems
• CPC Class Codes: G01B 11/245 using a plurality of fixed, simultaneously operating transducers G01B11/2408 - G01B11/2425, G01B11/255 take precedence
• CPC Class Codes: G06T 2207/10012 Stereo images
• CPC Class Codes: G06T 2207/10081 Computed x-ray tomography [CT]
• CPC Class Codes: G06T 2207/10116 X-ray image
• CPC Class Codes: G06T 2207/30096 Tumor; Lesion
• CPC Class Codes: G06T 7/0016 involving temporal comparison
• CPC Class Codes: H04N 13/207 using a single 2D image sensor

Abstract

A three-dimensional image capture system includes a three-dimensional measuring device that is placed on a room-structure object of a room in which a patient support table is placed 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, 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.

Claims

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 a room-structure object of a room in which the patient support table is placed, and performs image-capturing of the top board and the patient without using an X-ray 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 which is a top-board coordinate system with reference to the top board or a room coordinate system with reference to a floor of the room in which the patient support table is placed, and that displays the three-dimensional image;

wherein 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 in which the three-dimensional-image data and the reference-coordinate-system position information are consolidated; and

wherein the display unit displays a reference image that is the three-dimensional image captured in Page 6 a condition where a diseased-site region of the patient is being positioned relative to the top board, and an observed image that is the three-dimensional image captured at a timing different from a timing at which the reference image was captured.

2. The three-dimensional image capture system of claim 1, wherein the three-dimensional-image processing device includes an information combining unit that combines 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 position-information extraction unit, to thereby generate combined three-dimensional-image data, and

wherein the display unit 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.

3. 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 three-dimensional-image processing device includes an information combining unit that combines 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 unit 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.

4. The three-dimensional image capture system of claim 1, wherein the display unit displays 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.

5. The three-dimensional image capture system of claim 1, wherein the three-dimensional-image processing device includes a comparison unit that compares, 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 unit.

6. The three-dimensional image capture system of claim 5, wherein the comparison unit 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.

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

8. The three-dimensional image capture system of claim 1, wherein the reference coordinate system is the room coordinate system, and the position-information extraction unit 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 and on an immobile portion of the room-structure object; and

coordinates of a plurality of positional references on the top board.

9. The three-dimensional image capture system of claim 7, wherein the positional references are positional-reference members provided on the top board.

10. The three-dimensional image capture system of claim 7, wherein the positional references are positional-reference marks provided on the top board.

11. The three-dimensional image capture system of claim 7, wherein the positional references are positional-reference lines provided on the top board.

12. The three-dimensional image capture system of claim 1, wherein the three-dimensional measuring device is movably placed on the room-structure object.

13. The three-dimensional image capture system of claim 1, wherein the three-dimensional measuring device is placed on the room-structure object in an attachable/detachable manner.

14. The three-dimensional image capture system of claim 1, wherein the three-dimensional measuring device has a movably-placed shielding member.

15. A particle beam therapy system comprising:

a beam generation apparatus that generates a charged particle beam and accelerates it up to a given energy using an accelerator;

a beam transport system that transports the charged particle beam accelerated by the beam generation apparatus;

a particle beam irradiation apparatus that radiates the charged particle beam transported by the beam transport system to a patient; and

a three-dimensional image capture system that image-captures the patient to which the charged particle beam is to be radiated;

wherein the three-dimensional image capture system is the three-dimensional image capture system of claim 1.

16. The three-dimensional image capture system of claim 2, wherein the display unit displays 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.

17. The three-dimensional image capture system of claim 3, wherein the display unit displays 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.

18. The three-dimensional image capture system of claim 2, wherein the three-dimensional-image processing device includes a comparison unit that compares, 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 unit.

19. The three-dimensional image capture system of claim 3, wherein the three-dimensional-image processing device includes a comparison unit that compares, 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 unit.

20. The three-dimensional image capture system of claim 2, wherein the reference coordinate system is the top-board coordinate system and the position-information extraction unit generates the reference-coordinate-system position information on the basis of coordinates of a plurality of positional references on the top board.