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~(201)铊心肌灌注闪烁照相术是探查和估价冠状动脉疾病的一种非侵入性方法,灵敏度高而特异性强。然而,它只能指示心肌一个区域对另一区域的相对灌注程度,是一种相对而非绝对的测定。因此,其灵敏度有可能由于存在多支病变或伴有陈旧性梗塞而有所减低。本文观察冠状动脉受累的分布、严重程度和以往梗塞区的存在对灌注闪烁图的总体和局部灵敏度的影响。方法:78例患有提示心绞痛的胸痛患者,男性57例,女性21例,平均年龄56岁(28～71岁)。在14天内进行冠状动脉造影和心肌灌注闪烁照相。根据冠状动脉造影结果,患者分成三组:第一组31例
~ (201) Thallium myocardial perfusion scintigraphy is a noninvasive method for detecting and assessing coronary artery disease, with high sensitivity and specificity. However, it can only indicate the relative perfusion of one area of the myocardium to another and is a relative but not absolute measure. Therefore, its sensitivity may be reduced by the presence of multiple lesions or with obsolete infarcts. This article observes the distribution and severity of coronary artery involvement and the impact of previous infarct zones on the overall and local sensitivity of perfusion scintigraphy. Methods: A total of 78 patients with chest pain with angina pectoris were enrolled. There were 57 males and 21 females, with an average age of 56 years (range, 28-71 years). Coronary angiography and myocardial perfusion scintigraphy were performed within 14 days. According to coronary angiography results, patients were divided into three groups: the first group of 31 cases