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目的：研究单光子发射型计算机断层显像（ＳＰＥＣＴ）在小儿病毒性心肌炎中的诊断意义。方法：用９９ｍＴｃ－ＭＩＢＩ观察了４７例临床诊断为病毒性心肌炎患儿的门控及非门控心肌灌注显像，观察了其左室射血分数及室壁运动情况。结果：４７例病毒性心肌炎患儿中４２例（８９％）门控心肌灌注异常，２６例（５５％）非门控心肌灌注异常，门控阳性率明显高于非门控（Ｐ＜００１）。心肌炎组与正常对照组相比，左室射血分数无显著性差异，２８例（５９６％）左室局部室壁运动减弱、不协调。结论：门控心肌灌注显像法能将病变部位、形态、范围和程度较直观地显示出来，图像清晰、敏感度高，可作为小儿病毒性心肌炎的一项重要辅助诊断方法
Objective: To study the diagnostic significance of single photon emission computed tomography (SPECT) in children with viral myocarditis. Methods: Gated and non-gated myocardial perfusion imaging was performed in 47 children with viral myocarditis clinically diagnosed by 99mTc-MIBI. Left ventricular ejection fraction and wall motion were observed. Results: Of the 47 children with viral myocarditis, 42 cases (89%) had gated myocardium perfusion abnormality and 26 cases (55%) had abnormal gonadal perfusion. The positive rate of gating was significantly higher than that of non-gated control (P <0 01). Myocarditis group compared with the normal control group, left ventricular ejection fraction was no significant difference in 28 cases (59 6%) left ventricular regional wall motion weakened, uncoordinated. Conclusions: Gated myocardial perfusion imaging can display the lesion, shape, extent and degree more intuitively, with clear image and high sensitivity, which can be used as an important auxiliary diagnosis method for viral myocarditis in children