シンチレーションカメラを利用した^<47>Ca吸収試験について

概要

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This report deals with a method about clinical application (Ca-47 absorption test) of a scintillation camera in place of a whole body counter. The performance characteristics examined are as follows. 1. The useful field of the modified collimator was a rectangle (Set up field) in its shape, facing the moving subject. The counter was suited for detecting γ-ray energies from 400 to 680 keV. The effective detector-to-body distance was 56 cm. The speed of bed movement for signal-accumulation was 130 cm/min. 2. The background count was relativly high. The coefficient of its variation during 15 days was 0.6%. 3. The applied scintillation camera operated most usefully in the detection range from 0.2μCi to 40μCi. 4. Values of Ca-47 absorption rate in the various diseases measured by a regular and the present method was fairly close with a coefficient of correlation of 0.984. 5. The proposed method for the application of scintillation camera for the purpose of whole body counting was favorable in view of its simplicity and reliability for the routine Ca-47 absorption test without quantitative treatment of feces.
社団法人日本放射線技術学会の論文
1981-03-01