PURPOSE: To obtain a tomographic image in a short time without placing any load on a body to be inspected by projecting fan-shaped radial rays from the periphery of the specific section of the body to be inspected and moving a radiation detection part in the direction where many detectors are arranged successively every time the body to be inspected makes one turn.
CONSTITUTION: The fan-shaped radial rays from a radiation source 1 are projected on the specific section of the body to be inspected and detected by the radiation detection part 3 consisting of the many detectors successively opposite to the radiation source 1 to reconstitute the tomographic image of the specific section according to the obtained projection data. Then a detection part horizontal fine moving mechanism part 37 moves the radiation detection part 3 in a plane containing the specific section and a turntable 21 rotates the body to be inspected around an axis perpendicular to the specific section. A fast arithmetic part 7 interpolates a defective part in said projection data obtained by the radiation detection part 3 due to a gap between detectors by using projection data obtained after the radiation detection part 3 is moved.
MATSUURA SHIGEO
TANIMOTO YOSHITETSU
FUJII MASAJI
SHOJI TAKAO
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