宝石能谱CT血管造影对小儿肺静脉异位引流的诊断价值

Effectiveness of Application of Gem Spectrum CT Angiography in Diagnosis of Pediatric Pulmonary Venous Drainage

目的探讨宝石能谱CT血管造影对小儿肺静脉异位引流的诊断价值。方法回顾性分析18例经手术证实的肺静脉异位引流患儿的宝石能谱CT血管造影图像,对图像进行容积重建(VR)、多平面重组(MPR)及薄层最大密度投影(MIP)处理,将造影检查结果与胸超声心动检查(TTE)结果进行比较,讨论CT血管造影的诊断价值。结果患儿异位引流肺静脉干共52支,其中40支为完全型异位引流,28支心上型、12支心内型;12支为部分异位引流,6支心上型、6支心内型。宝石能谱CT对该病的诊断准确率(100%)显著高于TTE的诊断准确率(78.8%)(P<0.05)。结论宝石能谱CT对小儿肺静脉异位引流的诊断准确率高,且对患儿的辐射损害较小,值得临床推广。

Objective To evaluate the effectiveness of application of gem spectrum CT angiography in diagnosis of pediatric pulmonary venous drainage. Methods The gem spectrum CTA imaging data of 18 children undergoing treatment of pulmonary venous drainage in the hospital from January 2014 to May 2015 were retrospectively analyzed. Volume rendering（VR）, multi-planar reformation（MPR） and maximum intensity projection（MIP） were adopted to process the images. Then, the CTA examination results and transthoracic echocardiography（TTE） results were compared so as to discuss the effectiveness of application of CTA in diagnosis of pediatric pulmonary venous drainage. ResultsAmong 52 cases anomalous pulmonary venous drainage, there were 40 cases of totally-ectopic drainage（28 of supracardiac, 12 of cardiac type） and 12 partial anomalous drainage（6 of supracardiac and 6 of cardiac type）. Compared with gems spectrum CT diagnostic accuracy（100%）, TTE diagnosis rate（78.8%） was significantly lower with significant difference（P〈0.05）. Conclusion Application of gem spectrum CT angiography showed higher accuracy in diagnosis of pediatric pulmonary venous drainage and less harm to patients, which was worth to be further promoted in clinical.