電算機による横断シンチグラフィー

概要

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A method of taking transverse section scintigraphy using a minicomputer and Anger-type camera is described. A rotating table for a patient is so set that the rotation center should be placed within perpendicular line of the center of the detector facing sideways. Scintigrams taken from at 4 directions (0°, 90°, 180° and 270°) are recorded on the magnetic tape. Radioisotope distribution in an X-Y-Z-coordinate system is subdivided into 40×40×40 matrix of equal size. The counts divided are given to each elements. Density values could be represented from 10 to 100 percent in 40×40 matrix. In a phantom study using the Alderson mock liver, 3 cm-and 4 cm-sized cold areas were well demonstrated on the transverse section image. Several fundamental experiments were performed using a point source in polyvinyle tube, and the resolving power was obtained to be 1.5 cm. Some clinical trials of the normal brain and liver were also demonstrated.
公益社団法人日本放射線技術学会の論文
1977-01-01