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99mTc—MIBI运动心肌显像肺/心肌比值测定的临床意义

The clinical significance of the lung/heart ratio measurement in  ̄(99m)Tc-MIBI stress myocardial imaging

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【作者】 朱旭生莫耀溥邹德环廖国荣焦晓凤周秀卿纪平

【Author】 Zhu Xusheng; Mo Yaopu; Zou Dehuan; Liao Guorong;Jiao Xiaofeng; Zhou Xiuqing; Ji Ping(The First Municipal Hospital of Guangzhou, Guangzhou 510180)

【机构】 广州市第一人民医院

【摘要】 33例受试者在运动达亚极量后,静脉注射99mTc-MIBI740MBq,1h后进行显像,采用ROI技术测定肺/心肌比值。结果显示,心绞痛组和心梗组的肺/心比值与正常对照组差别非常显著(P<0.01)。以0,38作为判定冠心病严重程度的指标,其诊断效能分别为灵敏度87.5%、特异性100%、准确性93.3%.肺/心比值≥0.38者7例,占21.2%。全99mTc-MIBI心肌显像阳性,并且都有两个壁以上的缺血。提示肺沁肌比值对判定冠心病严重程度及预后预测具有一定的临床价值.

【Abstract】 After submaxdrial stress, 99mTc-MIBI(740MBq) was intravenously administered in 33 cases of coronary heart diseases.Planer myocardial imaging was performed 1h later. Lung/heart ratio was determined using ROI technique. The result showed that there was very significant difference between the lung/heart ratio of angina pectoris and myocardial infarction group compared with the normal controls (P<0.01). If 0.38 as marker for severe coronary artery disease was used, then the sensitivity was 87.5%, specificity 100% and accuracy 93.3%. In our study, these were 7 cases withlung/heart ratio >0.38. This accounted for 21.2%. In all these cases, the myocardial imaging were positive, with ischemia in more than two walls. Thereby lung/heart ratio was clinically useful for determining the seventy and prognosis of coronary artery disease.

  • 【分类号】R541.4
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