Rotational tomographic X-ray apparatus with planigraph function

摘要

A rotational tomographic X-ray apparatus is disclosed as having an X-ray detection surface disposed parallel to a planigraphic plane selected as a subject to be photographed, and comprising a mechanism for linearly moving the X-ray generator and the X-ray detection surface of the apparatus in relatively opposite directions parallel to the planigraphic plane with the head of a patient positioned therebetween, and for controlling the irradiation direction of X-rays so that the irradiated X-rays always pass the same specific region in the planigraphic plane and are incident on the X-ray detection surface in synchronization with the linear movement. With this apparatus, clear planigraphic photographing with no distortion is possible and the magnifying ratios of X-ray images can be changed easily.