CPC A61B 6/4085 (2013.01) [A61B 6/032 (2013.01); A61B 6/0435 (2013.01); A61B 6/405 (2013.01); A61B 6/4035 (2013.01); A61B 6/4078 (2013.01); A61B 6/502 (2013.01); A61B 6/5205 (2013.01); A61B 6/544 (2013.01); A61B 6/582 (2013.01); A61B 6/583 (2013.01); A61B 6/5258 (2013.01); A61B 6/5294 (2013.01); G21K 1/10 (2013.01)] | 19 Claims |
1. A method for producing three-dimensional (3D) beam modulation filters for performing cone beam computed tomography (CBCT) breast imaging, comprising:
receiving a plurality of CBCT datasets acquired using a CBCT system from a plurality of persons with different breast shapes and sizes;
selecting a subset of the CBCT datasets to define a breast class, said breast class having a breast class x-ray path length profile; and
fabricating, using the breast class x-ray path length profile, a three-dimensional (3D) beam modulation filter to have a thickness profile that compensates for intensity variations of a measured signal at a detector when a person's breast within said breast class is imaged by a cone beam of the CBCT system,
wherein the cone beam comprises a first beam angle direction and a second beam angle direction, wherein the first beam angle direction is perpendicular to the second beam angle direction, wherein the thickness profile varies as a function of position in both the first beam angle direction and the second beam angle direction.
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