X-ray CT system with means to expand detector signals by interpolation before filter processing is performed

摘要: In an X-ray CT apparatus including source for irradiating X-rays to object be tested; a radiant ray detector detecting the amount of transmitted through said device rotating and about axis produce detection signals corresponding X-rays; filter processing signal; circuitry back-projecting filtering resultant thereby reproduce distribution image absorption in cross-section tested, interpolating interpolation values into form expanded having elongated length so that are used processing.