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WAVE HEIGHT FREQUENCY DISTRIBUTION ACQUISITION DEVICE, WAVE HEIGHT FREQUENCY DISTRIBUTION ACQUISITION METHOD, WAVE HEIGHT FREQUENCY DISTRIBUTION ACQUISITION PROGRAM, AND RADIATION IMAGING DEVICE
WAVE HEIGHT FREQUENCY DISTRIBUTION ACQUISITION DEVICE, WAVE HEIGHT FREQUENCY DISTRIBUTION ACQUISITION METHOD, WAVE HEIGHT FREQUENCY DISTRIBUTION ACQUISITION PROGRAM, AND RADIATION IMAGING DEVICE
To create a high-accuracy wave height frequency distribution in a short time and, furthermore, to reduce the cost of a radiation imaging device for which a detector using the wave height frequency distribution to calibrate is adapted.SOLUTION: Provided is a wave height frequency distribution acquisition device of a radiation detector equipped with a plurality of counting units which, when the value of a detection signal of an incident X-ray that is detected is greater than or equal to a threshold, counts the detection signals and outputs respective count values. The wave height frequency distribution acquisition device comprises: a threshold setting unit for setting a first threshold V1 to a first counting unit and setting a second threshold V2 higher than the first threshold V1 to a second counting unit, and resetting a first threshold V1' different from the first threshold V1 to the first counting unit; a measurement control unit for carrying out a plurality of measurements; and a wave height frequency distribution generation unit for generating a wave height frequency distribution for the first threshold in the first counting unit on the basis of a difference between the count values obtained by the first and second counting units through a plurality of measurements carried out in accordance with the measurement control unit.SELECTED DRAWING: Figure 8
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