NUCLEAR MEDICINE DIAGNOSTIC DEVICE

• Main Author: MOTOMURA NOBUATSU
• Format: Patent
• Language: English
• Published: 24.02.2014
• Subjects: MEASUREMENT OF NUCLEAR OR X-RADIATION; MEASURING; PHYSICS; TESTING

PROBLEM TO BE SOLVED: To reduce an artifact of the edge portion of a photographing visual field when reconstituting SPECT using a method of successive approximation incorporating collimator blurring compensation.SOLUTION: The nuclear medicine diagnostic device of the embodiment includes: detection means; collection means; expansion means; reconstitution means; and display means. The detection means has a collimator for collimating gamma rays emitted from a subject, and detects the gamma rays having passed the collimator. The collection means collects projection data on the basis of the output of the detection means. The expansion means expands a range of the collected projection data by performing extrapolation processing on the projection data in such a way that a pixel value of the edge portion of the projection data is set to a zero at a position expanded by a degradation distance of the maximum positional resolution on the basis of the degradation distance of the maximum positional resolution of the collimator. The reconstitution means generates image data by performing the reconstitution processing on the expanded projection data. The display means displays the image data.