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一、前言医用同位素扫描机自五十年代问世以来,不断取得进展:碘化钠晶体由2时增至4～5时,灵敏度提高了很多倍;打印方式由分频改为数字积分和控频式,大大降低了统计涨落;显示方式由疏密改为彩色,提高了主观分辨能力·此外还采取了一些其它措施,使整机分辨能力有了很大提高。在国外,近十多年来,扫描机逐渐被?照相机取代。但根据我国情况,由于γ照相机的造价比扫描机高数十倍,所以在短期内尚难普及。我国推广核医学首先还应主要依靠扫描机,因此扫描机应进行升级换代。此外,现在各医院拥有的扫描机,也应当在可能范围内进行技术改造,充分发挥它的
First, the foreword Medical isotope scanner since the advent of the 1950s, continue to make progress: sodium iodide crystals increased from 2 to 4 to 5, the sensitivity increased many times; print mode by the frequency to digital integration and frequency control Greatly reduces the statistical fluctuation; the display mode is changed from dense to color, which improves the subjective resolution ability. In addition, some other measures are taken to make the resolution of the whole machine greatly improved. Abroad, the scanner has gradually been replaced by a camera in the past decade or so. However, according to our situation, due to the cost of gamma camera scanner ten times higher, so in the short term is not popular. First of all, China should mainly rely on the promotion of nuclear medicine scanners, scanners should be upgraded. In addition, the scanners owned by hospitals now should also make technological improvements as much as possible