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复制犬急性心肌梗塞模型８只，分别进行ＭＲＩ增强前后扫描，并与病理对照研究。结果提示：平扫Ｔ２Ｗ心梗区信号强度明显增高。增强后Ｔ１ＷＩ早期心梗区不均匀增强，以周围区强化明显，中央区呈相对低信号。随增强时间延长，中央区信号强度渐高，３０ｍｉｎ后与周围区融合成片状。ＴＴＣ心肌染色梗塞灶大小形态与ＭＲＩ表现相同。心肌含水量测定证实梗塞心肌含水量较正常心肌含水量显著增高。病理结果表明梗塞中央区与周围区具有不同的病理学特征
Eight dogs with acute myocardial infarction were replicated and scanned before and after MRI enhancement respectively and compared with pathology. The results suggest that: plain T2W myocardial infarction area signal intensity was significantly higher. In the early stage of T1WI, the myocardial infarction area was enhanced non-uniformly in the early stage, with obvious enhancement in the surrounding area and a relatively low signal in the central area. With the extension of the extension of time, the signal intensity in the central area gradually increased, and the surrounding area merged into a sheet after 30 minutes. TTC myocardial infarction lesions size and shape the same MRI performance. Measurement of myocardial water content confirmed myocardial infarction myocardial water content was significantly higher than normal. Pathological results showed that the infarct central area and the surrounding area have different pathological features