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借助心脏模型和临床研究，探讨了心肌断层显像１８０°采集方式的可行性，并与３６０°资料采集进行了比较。评价参数主要有心肌容积和面积、缺损容积和面积。结果表明；单用心脏模型时，３６０°方式与模型真实值较为接近，而外附体模后，１８０°采集更符合真实值，但相互间均无显著性差异（Ｐ＞０．０５）。３４例冠心病患者心肌病变定量参数３６０°／°与１８０°间或１８０°／６°与１８０°矿间均非常接近；而且１８０°／６°采集时其缺损（病变）／正常心肌比率（０．２３５±０．０４３）较３６０°／６°采集（０．２４９±０．０５７）明显降低（Ｐ＜０．０５），表明前者能更好地分辨病变区。上述结果提示：心肌断层显像时，１８０°采集不但能与３６０°采集一样提供较好的图像，而且能减少图像采集时间，故更具有临床应用价值。
With the help of heart model and clinical study, the feasibility of 180 ° acquisition of myocardial imaging was discussed and compared with 360 ° data acquisition. The main parameters of assessment were myocardial volume and area, defect volume and area. The results showed that the 360 ° approach was close to the true value of the model when the heart model was used alone, while the 180 ° acquisition was more consistent with the true value after attachment of the phantom, but no significant difference was found between them (P> 0.05). The quantitative parameters of myocardial lesions in 34 patients with coronary heart disease were very close to those of 360 ° / ° and 180 ° or between 180 ° / 6 ° and 180 °; and the ratio of defect (lesion) / normal myocardium .235 ± 0.043) was significantly lower than that of 360 ° / 6 ° (0.249 ± 0.057) (P <0.05), indicating that the former can better distinguish the lesion area. The above results suggest that the 180 ° acquisition not only provides the same good image as the 360 ° acquisition but also can reduce the image acquisition time during myocardial imaging. Therefore, it is more valuable in clinical application.