| 摘要 |
PROBLEM TO BE SOLVED: To correct picture data with high accuracy by estimating the quantity of the cross talk of a second tissue from a first tissue based on the spatial resolution of a tomographic distribution, the distance between the first and second tissues where RI is accumulated, and the number of RI entering the inside from the contour of the first tissue by the distance of the spatial resolution or longer. SOLUTION: Gamma-ray detectors 1 are arranged around a patient in a circular arcuate state. A counter 2 only counts the gamma-rays the energy of which enters the energy range corresponding to an administrated nuclide at every incident position during a prescribed period of time. A reconfiguration processor 3 re-configures the tomographic distribution of RI by performing random number correction and absorption correction on the counted results of the counter 2. The tomographic distribution is sent to a display and displayed as a gradation picture and, at the same time, sent to a picture correction processor 5 which performs correction on the tomographic distribution for reducing spatial cross talk among tissues caused by the spatial resolution. |
