Analysis device of energy decomposition CT, X-ray CT apparatus, analysis method of energy decomposition CT, and analysis program of energy decomposition CT

摘要

To provide an analysis device for an energy decomposition CT with which the response function of a detector is calculated appropriately, and the energy distribution of the transmission X-ray for an unknown object can be obtained with high accuracy using this response function.SOLUTION: An analyzer 20 of the energy decomposition CT includes an acquiring unit 131 that acquires a measurement value acquired by measuring the measured value with a detector 12 that detects the X-ray as X-rays having a plurality of X-ray energy spectra different from each other that have been emitted from an X-ray source 11 and passed through the specimen, a derivation unit 133 that derives an energy distribution of the transmitted X-rays from the measured value using a response function indicating the relationship between the energy of the X-ray incident on the detector 12 and the energy applied to the detector 12, and an arithmetic unit 132 that calculates the response function by adding the X-ray scattering element.SELECTED DRAWING: Figure 2