^(111)In-AMA心肌显像鉴别室性早搏病因的临床价值

Clinical value of myocardial ^(111)In-nuclear imaging on the differential etiologic diagnosis of premature ventricular contraction

目的:评估111In核素心肌显像对室性早搏病因的鉴别诊断价值。方法:17例急性心肌炎并室性早搏者为病例组,20例急性心肌梗死并室性早搏者为对照组。全部病例均接受111In抗肌凝蛋白抗体(111In-AMA)和201铊(201Tl)双重心肌显像检查,并将影像结果与相应的病因诊断进行比较。结果:病例组中,12例(70.59%)呈弥漫性AMA摄取,5例(29.41%)呈局灶性AMA摄取/正常Tl显像。对照组中,2例(10.00%)呈局灶性AMA摄取/正常Tl显像,18例(90.00%)呈节段性AMA摄取/相匹配Tl缺损显像。结论:111In核素心肌显像作为一种无创性检查手段,有助于早期鉴别室性早搏的病因。

Objective：To assess the clinical value of myocardial 111In-nuclear imaging in the differential etiologic diagnosis of premature ventricular contraction. Methods：17 cases of acute myocarditis with premature ventricular contractions patients were enrolled in the case group,and 20 cases of acute myocardial infarction with premature ventricular contractions patients were enrolled in the control group. Myocardial 111In-antimyosin antibody （111In-AMA） and thallium （201Tl） imaging was performed in all patients,with images to compare with corresponding etiologic diagnosis. Results：In the case group,12 patients （70.59%） presented with diffuse AMA uptake images,5 patients （29.41%） presented with focal AMA uptake/normal Tl scan. While in control group,2 patients （10.00%） presented with focal AMA uptake/normal Tl scan and 18 patients （90.00%） presented with segmental AMA uptake/matched Tl defect scan. Conclusion：As a noninvasive examination,myocardial 111In-nuclear imaging allows the differential etiologic diagnosis of premature ventricular contraction on early stage.