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放射性核素心血管造影于1971年用于临床。造影有两种方法:首次通过法(First-pass)及多门电路血池显像法(Multigated cardiac blood pool imaging,MUGA)。二者均能获得重要的生理数据,是研究左心室和右心室功能的有效方法。核素造影所用核素剂量很小,对人体的辐射量比心导管或心血管造影为少,且无危险性,是一无创性心功能检查方法。两种方法各有其特点及限制,但可互补。 首次通过法 此法是放射性核素一次通过心脏各腔室时摄得的影像。根据示踪剂稀释原理,可以对左右心室功能进行定量分析,包括射血分数(EF)等功能参数、心室腔大小及室壁运动情况;尚可诊断心内分流及分流量。
Radionuclide Cardiovascular angiography in 1971 for clinical use. There are two methods of angiography: First-pass and Multigated cardiac blood pool imaging (MUGA). Both obtain important physiological data and are effective methods of studying left ventricular and right ventricular function. Radionuclide radionuclides used in a very small dose, the amount of radiation on the human body than the catheter or cardiovascular angiography is less, and without risk, is a noninvasive cardiac function test. Both methods have their own characteristics and limitations, but they are complementary. First-pass method This method is a radionuclide once passed through the heart chamber when the image. According to the principle of tracer dilution, the left and right ventricular function can be quantitatively analyzed, including functional parameters such as ejection fraction (EF), ventricular cavity size and ventricular wall motion; still can be diagnosed intracardiac shunt and shunt volume.