US 12,121,380 B2
PCCT apparatus
Shinichi Kojima, Kashiwa (JP); Fumito Watanabe, Kashiwa (JP); Isao Takahashi, Kashiwa (JP); Kazuma Yokoi, Kashiwa (JP); Taiga Goto, Kashiwa (JP); Fuyuhiko Teramoto, Kashiwa (JP); and Ryosuke Tsuchida, Kashiwa (JP)
Assigned to FUJIFILM Corporation, Tokyo (JP)
Filed by FUJIFILM Healthcare Corporation, Kashiwa (JP)
Filed on Oct. 12, 2022, as Appl. No. 17/964,642.
Claims priority of application No. 2022-009021 (JP), filed on Jan. 25, 2022.
Prior Publication US 2023/0233164 A1, Jul. 27, 2023
Int. Cl. A61B 6/00 (2024.01); A61B 6/03 (2006.01); A61B 6/42 (2024.01)
CPC A61B 6/4241 (2013.01) [A61B 6/032 (2013.01); A61B 6/5205 (2013.01); A61B 6/5258 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A PCCT apparatus that obtains projection data divided into a plurality of energy bins by irradiating a subject with X-rays, the PCCT apparatus comprising:
a first correction unit that corrects a band artifact of a first material decomposition image among a plurality of material decomposition images created on the basis of the projection data, and at the same time, calculates a first correction amount that is a correction amount for the band artifact;
an energy calculation unit that calculates an average energy of X-rays that transmit the subject; and
a second correction unit that corrects the band artifact of a second material decomposition image using a second correction amount that is a correction amount calculated on the basis of the first correction amount and the average energy.