US 11,944,468 B2
Material decomposition apparatus, PCCT apparatus, and material decomposition method
Shinichi Kojima, Tokyo (JP); Kazuma Yokoi, Tokyo (JP); Isao Takahashi, Tokyo (JP); Fumito Watanabe, Tokyo (JP); Fuyuhiko Teramoto, Tokyo (JP); and Taiga Gotou, Tokyo (JP)
Assigned to FUJIFILM HEALTHCARE CORPORATION, Chiba (JP)
Filed by Hitachi, Ltd., Tokyo (JP)
Filed on May 18, 2020, as Appl. No. 16/876,185.
Claims priority of application No. 2019-187946 (JP), filed on Oct. 11, 2019.
Prior Publication US 2021/0106292 A1, Apr. 15, 2021
Int. Cl. A61B 6/03 (2006.01); A61B 6/00 (2006.01); A61B 6/42 (2024.01)
CPC A61B 6/032 (2013.01) [A61B 6/4241 (2013.01); A61B 6/5217 (2013.01); A61B 6/545 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A material decomposition apparatus for performing decomposition of a material in an object, comprising:
a processor;
a first memory coupled to the processor; and
a second memory coupled to the processor,
wherein the first memory stores instructions that when executed by the processor, configure the processor to:
store, in the second memory, a plurality of correction data preliminarily generated for each combination of the three or more materials, each of a plurality of detection elements and each energy level by individually decomposing each one of three or more materials into the other respective materials of the three or more materials,
input radiation data of the object, the radiation data being divided into the plurality of energy levels, and
repeatedly perform two-material decomposition for decomposition of the three or more materials using the radiation data at different energy levels and using the stored correction data of each detection element for each energy level to perform decomposition of the inside of the object into the three or more materials.
 
6. A material decomposition method of performing decomposition of a material in an object, comprising:
storing, in a memory, a plurality of correction data preliminarily generated for each combination of the three or more materials, each of a plurality of detection elements and each energy level by individually decomposing each one of three or more materials into the other respective materials of the three or more materials;
inputting radiation data of the object, which has been divided into the plurality of energy levels; and
repeatedly performing, with a processor, two-material decomposition for decomposition of the three or more materials using the radiation data at different energy levels and using the stored correction data of each detection element for each energy level to perform decomposition of the inside of the object into three or more materials.