METHOD FOR BUILDING TRANSMISSIVE X-RAY TOMOGRAMS Russian patent published in 2003 - IPC

FIELD: medicine. SUBSTANCE: method involves irradiating object layer under study with flat X-ray beam of constant thickness under all values of translucence angle, building digital reverse projections and recovering image of the layer under study with computer software and showing it on the display screen. X-ray beam escaping from the layer under study is directed to sensitive layer of roentgen luminescent screen placed at fixed distance from the X-ray radiation source at an acute angle to the planes of the layer under study that the whole sensitive screen layer is disposed within the limits of the X-ray radiation beam thickness. The sensitive screen layer luminescence radiation photo is taken through adjusting optical filter using digital electronic photo camera connected to computer. The adjusting optical filter is manufactured so that it has optical density falling with distance from X-ray radiation source growing. EFFECT: simplified and accelerated method. 2 cl, 4 dwg