X-ray ct apparatus, correction data collection method, and storage medium

A correction data collection method using a computer of an X-ray CT apparatus including a rotating unit configured to rotatably hold an X-ray tube and an X-ray detector, the correction data collection method comprising:

• switching energy bin sets related to discrimination of photons detected by the X-ray detector between a first energy bin set and a second energy bin set in which at least a part of an energy bin combination is different from the first energy bin set during one rotation of the rotating unit;
• and
• collecting correction data for each of the first energy bin set and the second energy bin set during the one rotation in response to switching between the first energy bin set and the second energy bin set.

A computer-readable non-transitory storage medium storing a program causing a computer of an X-ray CT apparatus including a rotating unit configured to rotatably hold an X-ray tube and an X-ray detector;

• to switch energy bin sets related to discrimination of photons detected by the X-ray detector between a first energy bin set and a second energy bin set in which at least a part of an energy bin combination is different from the first energy bin set during one rotation of the rotating unit;
• and
• to collect correction data for each of the first energy bin set and the second energy bin set during the one rotation in response to switching between the first energy bin set and the second energy bin set.