X-ray computed tomographic apparatus, image processing apparatus, and image processing method
View Patent ↗An image processing apparatus includes an index computing unit that computes motion functional indices of a particular organ from volume data of a subject including the particular organ, a polar map generating unit that generates a polar map by developing the indices on a polar coordinate system, an image generating unit that generates, from the volume data, an image related to a structure of one of the particular organ and a peripheral organ developed on the polar coordinate system, a fusing unit that fuses the image into the polar map, and a display unit that displays a polar map fused with the image.
1. An image processing apparatus, comprising:
an index computing unit configured to compute motion functional indices of a particular organ from volume data of a subject including said particular organ;
a polar map generating unit configured to generate a polar map by developing said indices on a polar coordinate system;
an image generating unit configured to generate, from said volume data, an image related to a structure of one of said particular organ and a peripheral organ developed on the polar coordinate system;
a fusing unit configured to fuse said image into said polar map; and
a display unit configured to display said polar map fused with said image.
2. The image processing apparatus according to claim 1 , wherein said particular organ is a heart, said motion function is a contraction rate of a myocardium, and said peripheral organ is a coronary artery.
3. The image processing apparatus according to claim 2 , wherein said polar coordinate system is expressed by an angle about a myocardial axis of the heart, and a distance from one of an apex and a base of the heart.
4. The image processing apparatus according to claim 2 , wherein said coronary artery is searched through a range within a certain distance from an outer wall of the myocardium.
5. The image processing apparatus according to claim 1 , further comprising an image generating unit that generates, from said volume data, an image related to a plane passing an arbitrary point on said image being displayed.
6. The image processing apparatus according to claim 2 , further comprising an image generating unit that generates, from said volume data, an image related to a plane passing an arbitrary point on said image of the coronary artery.
7. The image processing apparatus according to claim 6 , wherein said plane is parallel to said myocardial axis of the heart.
8. The image processing apparatus according to claim 6 , wherein said plane is perpendicular to said myocardial axis of the heart.
9. The image processing apparatus according to claim 6 , wherein said plane is curved along said coronary artery.
10. An image processing method, comprising:
computing motion functional indices of a particular organ from volume data of a subject including said particular organ;
generating a polar map by developing said indices on a polar coordinate system;
generating, from said volume data, an image related to a structure of one of said particular organ and a peripheral organ developed on the polar coordinate system;
fusing said image into said polar map; and
displaying said polar map fused with said image.
11. The image processing method according to claim 10 , wherein said particular organ is a heart, said motion function is a contraction rate of a myocardium, and said peripheral organ is a coronary artery.
12. The image processing method according to claim 11 , wherein said polar coordinate system is expressed by an angle about a myocardial axis of the heart, and a distance from one of an apex and a base of the heart.
13. The image processing method according to claim 11 , wherein said coronary artery is searched through a range within a certain distance from an outer wall of the myocardium.
14. The image processing method according to claim 10 , further comprising generating, from said volume data, an image related to a plane passing an arbitrary point on said image being displayed.
15. The image processing method according to claim 11 , further comprising generating, from said volume data, an image related to a plane passing an arbitrary point on said image of the coronary artery.
16. The image processing method according to claim 15 , wherein said plane is parallel to said myocardial axis of the heart.
17. The image processing method according to claim 15 , wherein said plane is perpendicular to said myocardial axis of the heart.
18. The image processing method according to claim 15 , wherein said plane is curved along said coronary artery.
19. An X-ray computed tomographic apparatus, comprising:
a data acquiring unit configured to acquire projection data of a subject;
a reconstructing unit configured to reconstruct one of multi-slice data and volume data based on said projection data;
an index computing unit configured to compute motion functional indices of a particular organ from one of said multi-slice data and said volume data;
a polar map generating unit configured to generate a polar map by developing said indices on a polar coordinate system; and
a display unit configured to display said polar map.
20. The X-ray computed tomographic apparatus according to claim 19 , wherein said reconstructing unit reconstructs an X-ray CT image.