| 摘要 |
PURPOSE:To uniformize detection efficiency, by controlling a movement speed of a collimator, and compensating change of the relative position of the body to be examined to a radiation detector, and that of detection efficiency due to attenuation of radiation caused by said body. CONSTITUTION:The central axis of a collimator 2 and the radiation detector 3 is set to a desired angle with a driving device 4, and rotated in the peripheral direction of the body to be examined with a driving device 5. A signal of the detector 3 is sent to a radiometer 10 and further to a measured result dispaly 11. The movement speed of the device 5 is controlled with a controller from a signal indicating the position of the device 5 and a signal indicating movement speed of the device 5 in the peripheral direction of the body. The angle of the central line of the collimator and the detector 3 is controlled with a controller 15 from a signal indicating the position of the device 5 and a signal indicating an angle of the central line of the collimator 2 and the detector 3. |
