PICKUP DEVICE FOR TOMOGRAPHIC IMAGE BY PICTURE PROCESSING OF X-RAY DIFFRACTION IMAGE

摘要

PURPOSE:To obtain a tomographic image having excellent contrast by a method wherein X-rays transmitted by a body to be inspected are made to pass through a diffraction filter which is a slit system. CONSTITUTION:When incident X-rays 1 going on one plane are transmitted by the tomographic plane 2 of a body to be inspected, diffraction is generated with a fixed scattering angle at points A and B in the part of transmission of the plane. Diffracted X-rays are supplied to a two-dimentional detection circuit 4 through a diffraction filter 3 which is a slit system transmitting primarily the diffracted X-rays alone. The image of these diffracted X-rays is displayed in a monitor 5 as it is for monitoring. Meanwhile, a computer 6 to which an output of the detection circuit 4 is supplied, conducts prescribed operation and makes a display unit 7 display corresponding images A''' and B''' of material distributions at two points located at the points A and B on the tomographic plane. In this way, a tomographic image having excellent contrast can be obtained.