DEVICE FOR ACQUIRING WAVE HEIGHT FREQUENCY DISTRIBUTION, METHOD FOR ACQUIRING WAVE HEIGHT FREQUENCY DISTRIBUTION, PROGRAM FOR ACQUIRING WAVE HEIGHT FREQUENCY DISTRIBUTION, AND RADIATION IMAGE CAPTURING DEVICE

摘要

The present invention creates a wave height frequency distribution at high accuracy within a short time, and also reduces the cost of a radiation image capturing device to which a detector for performing correction by using the wave height frequency distribution is applied. Provided is a device for acquiring a wave height frequency distribution of a radiation detector, which is provided with a plurality of counting units that count a detection signal for detecting an incident x-ray when a value of the detection signal is a threshold value or higher, and that output the counted value. The device is provided with: a threshold value setting unit which sets a first threshold value V1 for a first counting unit, sets a second threshold value V2 higher than the first threshold value V1 for a second counting unit, and resets another first threshold value V1' different from the first threshold value V1 for the first counting unit; a measurement control unit which performs a plurality of measurements; and a wave height frequency distribution generation unit which generates a wave height frequency distribution for the first threshold value in the first counting unit on the basis of a difference between counting values of the first counting unit and the second counting unit that are obtained by the plurality of measurements performed by the measurement control unit.