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氮-13氨(N-13 Ammonia)在静脉注入后迅速且近乎完全地从血流中清除,通过代谢作用而固定于心肌内.在心肌血流0～500毫升/分/100克的范围内,心肌氮-13组织浓度与心肌血流成比例.因此心肌氮-13放射活性代表了注射该示踪剂时的相对心肌血流分布.本文报道在人体用这种技术检出和估计冠状动脉疾病范围的价值.方法:32例冠心病患者及13例正常对照者.对照组年龄18～44岁(平均25.2),均为男性.冠心病患者年龄31～68岁(平均53.1),男性22例,
N-13 Ammonia is rapidly and almost completely removed from the bloodstream after intravenous injection and is fixed in the myocardium by metabolism. In the range of 0 to 500 ml / min / 100 g of myocardial blood flow , Myocardial tissue concentration of nitrogen-13 is proportional to myocardial blood flow.Therefore, myocardial radioactivity of 13 represents the relative myocardial blood flow distribution of the tracer injected.This paper reports the detection and estimation of coronary artery Methods: 32 patients with coronary heart disease and 13 normal controls were enrolled in this study.The patients in the control group were 18 to 44 years old (average 25.2), all of whom were men.The patients with coronary heart disease ranged in age from 31 to 68 years example,