^（99m）Tc－MIBI心肌断层显像图像采集方法比较  

Acquisition method study on￣(99m)Tc-MIBI myocardial SPECT

作　　者：梁宏[1] 石锐[1] 林增桃[1] 曾世荃[1] 李春亿[1] 

机构地区：[1]中山医科大学附属第一医院

出　　处：《核技术》1996年第5期285-288,共4页Nuclear Techniques

摘　　要：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。Heart phantom and clinical study of 99mTc-MIBI SPECT with 180°(LAO to RAO)data acquisition was camed out and compared with the full 360°rotation.Data analyses included myocardial volume and area,defect Volume and area.In simple heart phantom study,360°acquisition was more aseroximate to phantom determined true value (P>0.05).However,when a hesrt phantom was wraped in a chest phantom, 180°data acquisition was more accordant with thee value (P>0.05).In 34 cases with coronary heart disease, all of the quantitative parameters mentioned above were very accordant between 360,/6°and 180°/6,180°/6°and 180°/3°The defect-to-normal wall-count ratio(D/N) was lower in the 180°scan (0.235±0.043)than in the 360°scan(0.249 ±0.057) (P<0.05),indicating the lesion site can be better detected by the former method.All of the results suggested that for myocardial SPECT the 180°acquisition method can save acquisition time and is more practical in the clinical appliance than 360°acquisition.

关 键 词：心脏模型 放射性核素显像 冠心病 

分 类 号：R817.4[医药卫生—影像医学与核医学] R541.1[医药卫生—放射医学]