Methods: 10 normal volunteers, 1 myocardial infarction patients and 39 suspected CAD patients underwent stress-delayed (2 and 4 hr postinjection) 99mTcN-NOET myocardial perfusion imaging, and the heart-lung ratio (HLR) at different time was calculated.

• 方法：10名正常人、1名心肌梗死患者和39名临床拟诊冠心病的患者进行了~(99m)TcN-NOET运动-再分布(注药后2、4小时)心肌灌注显像，并测定不同时间的心/肺比值(HLR)。