APPARATUS AND METHOD FOR GENERATING TOMOGRAPHY IMAGE
First Claim
1. A method of acquiring a tomography image, the method comprising:
- acquiring a plurality of raw data by detecting, by an X-ray detector, an X-ray irradiated to an object from an X-ray generator a plurality of times;
setting at least a part of the object as a region of interest; and
reconstructing the tomography image comprising the region of interest, based on the plurality of raw data,wherein the reconstructing of the tomography image comprises;
selecting filter kernels based on distances between positions of the X-ray generator that irradiated the X-ray to the region of interest and positions of voxels included in the region of interest;
generating filter images by applying the selected filter kernels to the raw data corresponding to the positions of the X-ray generator that irradiated the X-ray; and
reconstructing the tomography image from the filter images by back-projecting the filter images.
1 Assignment
0 Petitions
Accused Products
Abstract
A method of acquiring a tomography image includes acquiring a plurality of raw data by detecting an X-ray irradiated to an object from an X-ray generator a plurality of times, wherein an X-ray detector performs the detecting; setting at least a part of the object as a region of interest; and reconstructing the tomography image including the region of interest, based on the plurality of raw data, wherein the reconstructing of the tomography image includes: selecting filter kernels based on distances between positions of the X-ray generator that irradiated the X-ray to the region of interest and positions of voxels included in the region of interest; generating filter images by applying the selected filter kernels to the raw data corresponding to the positions of the X-ray generator that irradiated the X-ray; and reconstructing the tomography image from the filter images by back-projecting the filter images.
11 Citations
20 Claims
-
1. A method of acquiring a tomography image, the method comprising:
-
acquiring a plurality of raw data by detecting, by an X-ray detector, an X-ray irradiated to an object from an X-ray generator a plurality of times; setting at least a part of the object as a region of interest; and reconstructing the tomography image comprising the region of interest, based on the plurality of raw data, wherein the reconstructing of the tomography image comprises; selecting filter kernels based on distances between positions of the X-ray generator that irradiated the X-ray to the region of interest and positions of voxels included in the region of interest; generating filter images by applying the selected filter kernels to the raw data corresponding to the positions of the X-ray generator that irradiated the X-ray; and reconstructing the tomography image from the filter images by back-projecting the filter images. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. A computer program product comprising a non-transitory computer readable storage medium, wherein the non-transitory computer readable storage medium comprises instructions to perform:
-
acquiring a plurality of raw data by detecting, by an X-ray generator, an X-ray irradiated to an object from an X-ray generator a plurality of times; setting at least a part of the object as a region of interest; and reconstructing a tomography image comprising the region of interest, based on the plurality of raw data, wherein the reconstructing of the tomography image comprises; selecting filter kernels based on distances between positions of the X-ray generator that irradiated the X-ray to the region of interest and positions of voxels included in the region of interest; generating filter images by applying the selected filter kernels to the raw data corresponding to the positions of the X-ray generator that irradiated the X-ray; and reconstructing the tomography image from the filter images by back-projecting the filter images.
-
-
11. An apparatus for acquiring a tomography image, the apparatus comprising:
-
an X-ray generator configured to irradiate an X-ray to an object a plurality of times; an X-ray detector configured to acquire a plurality of raw data by detecting the irradiated X-ray; and a processor configured to set at least a part of the object as a region of interest and reconstruct the tomography image comprising the region of interest based on the plurality of raw data, wherein the processor is configured to select filter kernels based on distances between positions of the X-ray generator that irradiated the X-ray to the region of interest and positions of voxels included in the region of interest, generate filter images by applying the selected filter kernels to the raw data corresponding to the positions of the X-ray generator that irradiated the X-ray, and reconstruct the tomography image from the filter images by back-projecting the filter images. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
-
-
20. A method of acquiring a tomography image, the method comprising:
-
acquiring a plurality of raw data by detecting, by an X-ray detector, an X-ray irradiated to an object from an X-ray generator a plurality of times; setting at least a part of the object as a region of interest; and reconstructing the tomography image comprising the region of interest based on the plurality of raw data, wherein the reconstructing of the tomography image comprises; receiving an input from a user to select a filter kernel having predetermined noise and sharpness; generating filter images by applying the selected filter kernel to the plurality of raw data; selecting a first modulation filter based on a first distance between a position of a first voxel included in the region of interest and a first position of the X-ray generator that irradiated the X-ray; generating a second filter image by applying the first modulation filter to a first filter image corresponding to the first position among the generated filter images; and reconstructing the first voxel by back-projecting the second filter image.
-
Specification