IMAGE PROCESSING APPARATUS AND X-RAY DIAGNOSTIC APPARATUS

• US 20090087068A1
• Filed: 09/25/2008
• Published: 04/02/2009
• Est. Priority Date: 09/28/2007
• Status: Active Grant

• Current Assignee: Toshiba Medical Systems Corporation (Canon Inc.)
• Original Assignee: TDK Corporation
• Inventors: SAKAGUCHI, Takuya
• Granted Patent: US 8,509,511 B2
• Time in Patent Office: Days
• US Class Current: 382/132
• CPC Class Codes: A61B 6/032 Transmission computed tomography [CT]
• CPC Class Codes: A61B 6/12 Arrangements for detecting or locating foreign bodies
• CPC Class Codes: A61B 6/4233 using matrix detectors
• CPC Class Codes: A61B 6/466 adapted to display 3D data
• CPC Class Codes: A61B 6/481 involving the use of contrast agents
• CPC Class Codes: A61B 6/504 for diagnosis of blood vessels, e.g. by angiography
• CPC Class Codes: A61B 6/5235 combining images from the same or different ionising radiation imaging techniques, e.g. PET and CT
• CPC Class Codes: A61B 6/541 involving acquisition triggered by a physiological signal
• CPC Class Codes: G06T 2207/10116 X-ray image
• CPC Class Codes: G06T 2207/30021 Catheter; Guide wire
• CPC Class Codes: G06T 2207/30048 Heart; Cardiac
• CPC Class Codes: G06T 2207/30101 Blood vessel; Artery; Vein; Vascular
• CPC Class Codes: G06T 7/70 Determining position or orientation of objects or cameras camera calibration G06T7/80

Abstract

In an X-ray diagnostic apparatus, a volume 3D image in which a desired blood vessel center line has been extracted is stored in a CT 3D image storage unit, and an X-ray two-dimensional image updated in real time is stored in an X-ray 2D image storage unit. The three-dimensional image is aligned with the X-ray two-dimensional image in an alignment unit. Further, a distal end position of a device and a position thereof after a predetermined time are searched for in a search unit, and the distal end position of the device in the three-dimensional image is calculated in a computing unit. Then, a cross-sectional image of the three-dimensional image is displayed on a monitor.

Claims

1. An image processing apparatus comprising:

a first storage unit which previously stores a desired volume three-dimensional image;

a second storage unit which stores a sequentially updated two-dimensional image;

an alignment unit which aligns the three-dimensional image stored in the first storage unit with the two-dimensional image stored in the second storage unit;

a position acquisition unit which acquires a position of a device; and

a computing unit which calculates the position of the device in the three-dimensional image.

2. The image processing apparatus according to claim 1, wherein

the position acquisition unit acquires a distal end position of the device.

3. The image processing apparatus according to claim 1, wherein

the position acquisition unit is configured by a position detection unit which detects the position of the device.

4. The image processing apparatus according to claim 1, further comprising:

a search unit which searches for a position of the device after a predetermined time.

5. The image processing apparatus according to claim 1, wherein

the computing unit calculates an intersection point of a projector and the center line of the three-dimensional image.

6. The image processing apparatus according to claim 5, further comprising:

a selection unit which selects a frame in a predetermined cardiac phase from the two-dimensional image,

wherein the alignment unit carries out the alignment using the frame selected in the selection unit.

7. The image processing apparatus according to claim 1, further comprising:

a display unit which displays a cross-sectional image of the three-dimensional image.

8. The image processing apparatus according to claim 1, further comprising:

a display unit which displays the position of the device calculated by the computing unit on the three-dimensional image.

9. An X-ray diagnostic apparatus which displays an image by image processing of image data generated by detecting X-rays applied to a specimen and converting the X-rays to an electric signal, the X-ray diagnostic apparatus comprising:

a first storage unit which stores a desired volume three-dimensional image;

a second storage unit which stores a sequentially updated X-ray two-dimensional image;

an alignment unit which aligns the three-dimensional image stored in the first storage unit with the X-ray two-dimensional image stored in the second storage unit;

a position acquisition unit which acquires a position of a device; and

a computing unit which calculates the distal end position of the device in the three-dimensional image.

10. The X-ray diagnostic apparatus according to claim 9, wherein

the position acquisition unit acquires a distal end position of the device.

11. The X-ray diagnostic apparatus according to claim 9, wherein

the position acquisition unit is configured by a position detection unit which detects the position of the device.

12. The X-ray diagnostic apparatus according to claim 9, further comprising:

a search unit which searches for a position of the device after a predetermined time.

13. The X-ray diagnostic apparatus according to claim 9, wherein

the computing unit calculates an intersection point of a projector and the center line of the three-dimensional image.

14. The X-ray diagnostic apparatus according to claim 13, further comprising:

a selection unit which selects a frame in a predetermined cardiac phase from the two-dimensional image,

wherein the alignment unit carries out the alignment using the frame selected in the selection unit.

15. The X-ray diagnostic apparatus according to claim 9, further comprising:

a display unit which displays a cross-sectional image of the three-dimensional image.

16. The X-ray diagnostic apparatus according to claim 9, further comprising:

a display unit which displays the position of the device calculated by the computing unit on the three-dimensional image.