论文部分内容阅读
目的 :了解单光子断层显像 (SPECT)对小儿病毒性心肌炎 (心肌炎 )的诊断价值及心肌炎患儿左室心功能的变化。方法 :用99mTc MIBI观察 5 0例心肌炎患儿心肌灌注显像 ,并与超声心动图、心电图、X线和心肌酶谱结果比较。同时对 2 0例进行心血池显像 ,观察左室局部射血分数和局部轴缩短率。结果 :46例心肌灌注显像异常 (92 2 % ) ,其中单灶性损害 15例 ,多灶性损害 31例 ,显像异常部位以左室前壁和侧壁最多。左室前侧壁射血分数和轴缩短率明显低于对照组 (P <0 0 5 )。超声心动图、心电图、X线阳性者均明显低于心肌灌注显像 (P <0 0 5 )。结论 :99mTc MIBI心肌灌注显像能直观显示心肌病变部位与范围 ,具有良好的可靠性和敏感性 ,可作为心肌炎一项重要诊断手段。心肌炎存在局部心功能减退 ,心功能改变与心肌受累部位密切相关
Objective: To investigate the diagnostic value of single photon tomography (SPECT) in children with viral myocarditis (myocarditis) and the changes of left ventricular cardiac function in children with myocarditis. Methods: Myocardial perfusion imaging in 50 children with myocarditis was observed by 99mTc MIBI and compared with echocardiogram, electrocardiogram, X-ray and myocardial enzymes. At the same time on 20 cases of cardiovascular imaging, observed left ventricular ejection fraction and local axial shortening rate. Results: Myocardial perfusion imaging was abnormal in 46 cases (92.2%). Among them, 15 cases were single focal lesion and 31 cases were multifocal lesion. Left anterior ventricular ejection fraction and axial shortening rate was significantly lower than the control group (P <0 05). Echocardiography, ECG and X-ray were significantly lower than myocardial perfusion imaging (P <0 05). Conclusion: 99mTc MIBI myocardial perfusion imaging can directly display the location and extent of myocardial lesions with good reliability and sensitivity, which can be used as an important diagnostic tool for myocarditis. Myocarditis there is local hypothyroidism, cardiac function changes and myocardial involvement is closely related to the site