| 摘要 |
PURPOSE: To easily obtain uniformity correcting data about, high energy. CONSTITUTION: The data of a radiation source 30 for correcting low energy are collected in a data collecting memory 17 by using a collimator 11 for high energy. The collected data are first filtrated at a correction calculating circuit 19. Since the filtrated data can be substantially used for uniformity correcting data collected about a radiation source 30 for correcting high energy by using the collimator 11, a correction calculating circuit 19 calculates correction values from the filtrated data and sends the correction values to a correction circuit 18.
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