| 摘要 |
A single photon emission computerized tomographic (SPECT) image acquiring method in which a fan-beam collimator radiation emitted from a radio isotope (RI) supplied into a biological body under medical examination is received with employment of a gamma camera, including the steps of: acquiring first projection image data by receiving via the fan-beam collimator radiation emitted from a reference isotope source; processing the first projection image data to obtain first correction data; acquiring second projection image data by receiving via the fan-beam collimator the radiation emitted from the radio isotope injected into the biological body; correcting the second projection image data with the first correction data so as to obtain third projection image data from which an artifact component has been eliminated; and, reconstructing a SPECT image of the biological body free from the artifact component based upon the third projection image data.
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