放射性核素唾液显像诊断儿童肺吸入的价值

Diagnostic value of radionuclide salivagram in pediatric pulmonary aspiration

目的探讨放射性核素唾液显像对儿童肺吸入的价值。方法回顾性分析2012年3月至2015年6月间62例（男37例，女25例，年龄2d～14岁）疑为吸人性肺炎的患儿资料。患儿均行胃食管反流显像和（或）唾液显像，采用疋。检验比较2种显像对儿童肺吸入的检出率。结果62例患儿中，共诊断肺吸入14例，其中放射性核素胃食管反流显像诊断1例，放射性核素唾液显像诊断13例。放射性核素唾液显像对肺吸入的检出率为26．0％（13／50），明显高于胃食管反流显像的3．1％（1／32；X2=7．211，P〈0．05）。13例放射性核素肺吸入阳性的患儿中，8例行上消化道造影，其中有5例均可见对比剂进入气道。结论放射性核素唾液显像对儿童肺吸入的检出率高于放射性核素胃食管反流显像，且与传统的上消化道造影具有较高的一致性。

Objective To evaluate the diagnostic value of radionuclide salivagram in children with pulmonary aspiration. Methods From March 2012 to June 2015, a total of 62 patients （37 males, 25 fe- males; age range： 2 d-14 years） with suspected pediatric aspiration pneumonia were enrolled in this retro- spective study. All patients underwent gastroesophageal reflux （GER） imaging and（or） radionuclide saliva- gram. Detection rate of pulmonary aspiration by the two imaging techniques was compared withX2 test. Results Of 62 patients, 14 were diagnosed as pulmonary aspiration, including 1 detected by GER imaging, and 13 detected by salivagram. The detection rate for pulmonary aspiration by radionuclide salivagram （ 26.0%, 13/50） was significantly higher than that by GER imaging （3.1%, 1/32; X^2 = 7.211, P〈0.05）. Eight of the 13 cases with pulmonary aspiration diagnosed by radionuclide salivagram underwent upper gastrointestinal radiography, and 5 cases had visible contrast agent in the airway. Conclusion Radionuclide salivagram has a higher detection rate for pulmonary aspiration compared to GER imaging, and has good concordance with the traditional upper gastrointestinal radiography.