Tatarczuk J R, Flesh L H, Kihm R H, Senecal J A
Med Phys. 1979 May-Jun;6(3):224-5. doi: 10.1118/1.594568.
Although the gamma camera and multi-crystal scanner have largely replaced the old dual probe rectlinear scanners in the larger hospitals, a large number of such scanners are still in use today. Modifications to these units can greatly enhance their usefulness. This paper describes the addition of dual SCA windows to each probe of a rectlinear scanner to increase sensitivity to multiple gamma-ray isotopes such as 67Ga. This method allows increased information density and/or decreased scanning time without degrading image quality. NIM electronics are used to keep down capital costs, as these modules can be shared with other counting systems when multiple-peak isotopes are not being scanned. A simple connection to an Ohio Nuclear Mdl 84 dual probe scanner is described. For other scanners, a slight modification would be necessary.
尽管γ相机和多晶体扫描仪在大型医院已基本取代了老式的双探头直线扫描仪，但如今仍有大量此类扫描仪在使用。对这些设备进行改进可极大地提高其效用。本文介绍了在直线扫描仪的每个探头上增加双SCA窗口，以提高对多种γ射线同位素（如67Ga）的敏感度。这种方法可在不降低图像质量的情况下增加信息密度和/或缩短扫描时间。使用NIM电子设备可降低资本成本，因为在不扫描多峰同位素时，这些模块可与其他计数系统共享。文中描述了与俄亥俄核子公司Mdl 84双探头扫描仪的简单连接。对于其他扫描仪，则需要稍作修改。
