複数ウェルガンマカウンタの特性比較とRadioimmunoassayの迅速処理における役割 : 単ウェルガンマカウンタとの比較と考察

概要

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Characterstics of multi-well gamma counters were compared with single-well gamma counters about usefulness and problems for rapid radioimmunoassay. Two single-well gamma counters (Aloka ARC-351,micromedic MS-588) and four multi-well gamma counters (Nuclear Enterprises NE-1600,Micromedic MSI-4/200,Aloka ARC-600,LKB Wallac MG-1260) were used for the present study. The counting time by respective gamma counters was clearly in inverse proportion to the numbers of wells. The geometric counting efficiency was markedly different from tested counters. In particular, it was decreased remarkably on the NE-1600 gamma counter by increasing of the sample volume. In case of the multi-well gammaa counter has a thin lead protection against gamma rays, so-called the cross-talk effect from well to well was observed with a high energy gamma ray sample (for example : ^<131>I, ^<59>Fe). The difference of the counting efficiency among wells is in existence only with the multi-well gamma counter but there is no factor with the single well gamma counter, resulting in the fact the former was affected to the counting accuracy. Therefore, the counting efficiency should be kept at 2% among the wells.
公益社団法人日本放射線技術学会の論文
1985-01-01