| 摘要 |
PURPOSE:To reduce noise in a picture by reconstituting the two-dimensional density distributing image of a rediation source by using the coarse position information in a slat length direction, in adition to the desne position information in a slat array direction. CONSTITUTION:A radiation detector group 2 is surperposed on the rear side of a slat collimator 1. When a radiation is made incident to a radiation detector 5, this output signal is sent to a pulse height analyzer 8 through an amplifier 7 corresponding to an X direction position, and sent to a channel number encoder 9 and a train number encoder 11. On the other hand, this output signal is sent to the trains number encoder 11, too, through an amplifier 10 corresponding to a Y direction position. Whenever the radiation is made incident, the dense information in the X direction and the coarse information in the Y direction are stored in a memory 12. In this way, when the slat collimator 1 and the radiation detector group 2 are rotated, the necessary information is all stored in the memory 12, this stored contents are read out and sent to an operating device 13, and a processing for reconstituting a picture is executed. |
