PCCT apparatus and control method of the same

Abstract

Provided are a PCCT apparatus and a control method thereof capable of improving an interpolation accuracy related to substance discrimination and shortening a processing time. A PCCT apparatus includes: a scanner that rotates an X-ray source that irradiates a subject with X-rays and a photon counting detector that detects the X-rays transmitted through the subject for each of a plurality of energy bins around the subject; an image generation unit that generates a tomographic image using projection data calculated based on an output of the photon counting detector; a map creation unit that creates a calibration data map based on the number of X-ray photons transmitted through each of a plurality of calibration phantoms having a first basal substance and a second basal substance of which a material and a thickness are known; a region division unit that divides the calibration data map into a non-linear region and a linear region; and an interpolation unit that performs non-linear interpolation in the non-linear region and performs linear interpolation in the linear region.

Dependencies are inferred from the claim text.