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作者给经导管用气囊阻塞冠脉形成急性心梗的狗作~(201)铊心肌灌注平面显像和单光子发射计算机断层成像(SPECT),以观察这两种方法定量测定心肌梗塞范围的准确性。气囊阻塞冠脉6～8分钟后静脉注射~(201)铊74MBq(2mCi)。注射后10分钟用大晶体γ照相机和通用平行孔准直器先从三个方位作平面显像,然后作SPECT。检查后杀死动物取出心脏,沿长轴每隔6～12mm切开,经氯化三苯四唑(TTC)染色10分钟,在病理标本上测出梗塞范围。
The authors performed ~ (201) Thallium myocardial perfusion planar imaging and single-photon emission computed tomography (SPECT) in dogs with catheter-occluded balloon-occluded coronary arteries to assess the accuracy of these two methods in quantitatively determining myocardial infarct size Sex. Balloon occlusion of coronary arteries 6 ~ 8 minutes after intravenous injection of ~ (201) thallium 74MBq (2mCi). 10 minutes after injection with a large crystal gamma camera and universal parallel collimator first from three directions for planar imaging, and then for SPECT. After the test, the animals were sacrificed to remove the heart, cut at intervals of 6 to 12 mm along the long axis, and stained with triphenyltetrazolium chloride (TTC) for 10 minutes to measure the extent of infarction on the pathological specimens.