Bowring C S, Glass H I
J Clin Pathol. 1974 Sep;27(9):751-6. doi: 10.1136/jcp.27.9.751.
The effect on the results obtained in surface counting investigations of using a dual detector counting system and multihole collimators has been investigated. The use of the additional detector results in smoother curves for the uptake of the radionuclide and the use of multihole collimators increases the discrimination of the counting system against the effects of radioactivity outside the region of interest. In a clinical trial to compare multihole collimation with conventional single hole collimation it was found that increased excess counts were obtained over the spleen with the multihole collimators in eight of ten cases.
研究了使用双探测器计数系统和多孔准直器对表面计数研究结果的影响。使用额外的探测器可使放射性核素摄取曲线更平滑，而使用多孔准直器可提高计数系统对感兴趣区域外放射性影响的辨别能力。在一项比较多孔准直与传统单孔准直的临床试验中，发现十例中有八例使用多孔准直器时脾脏上获得的过量计数增加。
