Tetalman M R, Foley L C, Spencer C P, Bishop S P
Radiology. 1977 Aug;124(2):433-7. doi: 10.1148/124.2.433.
An intercomparison was made of technetium phosphates, thallium 201, and technetium-labeled MAA to define areas of small myocardial infarction in pigs. Byinstilling 0.01 ml of mercury into the coronary arteries, 2-cm infarcts were created. Several of the infarcts were in the anterior left ventricular wall. None of the infarcts was imaged with 99mTc phosphates. Three of the seven thallium 201 images demonstrated only diffuse right ventricular activity. Three of the seven infarcts were imaged with technetium MAA; a perfusion defect was seen in the area of infarction. Technetium MAA is the most sensitive agent in defining areas of abnormal myocardial perfusion.
对磷酸锝、铊-201和锝标记的大颗粒聚合白蛋白（MAA）进行了对比，以确定猪心肌小梗死区域。通过向冠状动脉内注入0.01 ml汞，制造出2厘米的梗死灶。其中一些梗死灶位于左心室前壁。磷酸锝未显示出任何梗死灶的影像。七张铊-201影像中有三张仅显示右心室弥漫性活动。七处梗死灶中有三处通过锝MAA显影；梗死区域可见灌注缺损。锝MAA是确定心肌灌注异常区域最敏感的试剂。
