US 12,213,821 B2
X-ray CT apparatus, determination method, and storage medium
Yu Sasaki, Nasushiobara (JP)
Assigned to CANON MEDICAL SYSTEMS CORPORATION, Otawara (JP)
Filed by CANON MEDICAL SYSTEMS CORPORATION, Otawara (JP)
Filed on Feb. 9, 2023, as Appl. No. 18/166,515.
Claims priority of application No. 2022-022249 (JP), filed on Feb. 16, 2022.
Prior Publication US 2023/0255578 A1, Aug. 17, 2023
Int. Cl. A61B 6/42 (2024.01); A61B 6/03 (2006.01)
CPC A61B 6/4241 (2013.01) [A61B 6/032 (2013.01)] 7 Claims
OG exemplary drawing
 
1. An X-ray CT apparatus comprising a processing circuitry configured to:
detect X-rays radiated from an X-ray tube in units of photons;
store first energy spectrum information acquired by detecting X-rays at a first timing;
acquire second energy spectrum information by detecting X-rays at a second timing after the first timing; and
determine a state of the X-ray tube on the basis of the first energy spectrum information and the second energy spectrum information.