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DEVICE FOR ACQUIRING PULSE HEIGHT SPECTRUM, METHOD FOR ACQUIRING PULSE HEIGHT SPECTRUM, PROGRAM FOR ACQUIRING PULSE HEIGHT SPECTRUM, AND RADIATION IMAGING APPARATUS
DEVICE FOR ACQUIRING PULSE HEIGHT SPECTRUM, METHOD FOR ACQUIRING PULSE HEIGHT SPECTRUM, PROGRAM FOR ACQUIRING PULSE HEIGHT SPECTRUM, AND RADIATION IMAGING APPARATUS
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机译:脉冲高度谱的获取装置,脉冲高度谱的获取方法,脉冲高度谱的获取程序以及放射线成像装置
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摘要
A highly accurate pulse height spectrum is generated within a short amount of time, further cost of a radiation imaging apparatus being reduced by employing a detector that performs calibration using the pulse height spectrum. Provided is a pulse height spectrum acquisition device of a radiation detector including multiple counting units for counting a detected signal obtained by detecting incident X-rays, when a value of the detected signal is equal to or larger than a threshold, and for outputting a count value of each counting unit. This device is provided with a threshold setter configured to set to a first counting unit, a first threshold V1 as a threshold for a first measurement, along with setting to a second counting unit, a second threshold V2 larger than the first threshold V1, and to set to the first counting unit, a reconfigured threshold V1′ as the threshold for a second measurement, the reconfigured threshold V1′ being different from the first threshold V1, a measurement controller configured to perform multiple measurements, and a pulse height spectrum generator configured to generate a pulse height spectrum for the first threshold V1 of the first counting unit, on the basis of a difference in the count values from the first counting unit and the second counting unit, obtained by the multiple measurements performed by the measurement controller.
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