【摘要】 探讨低剂量螺旋CT扫描及图像后处理技术在小儿气管、支气管异物术前诊断的临床应用价值。选取临床高度怀疑,X线诊断不甚明确的气管、支气管异物,行螺旋CT轴位扫描及MPR、CTVB图像后处理确诊为气道异物的211例为研究对象。根据CT异物所在气道位置及引起并发症程度建立分型标准,并以支气管镜检术结果为对照,比较各型异物在X线及CT图像后处理前后的诊断准确性差异并分析各型异物特点。I型、II型、III型异物X线、CT轴位、CT轴位加后处理诊断准确率分为:9.52%、64.29%、44.44%;100.00%、93.51%、77.78%;100.00%、98.70%、97.22%。经统计学配对χ2检验,P<0.05,CT轴位加后处理诊断准确率优于前两者。螺旋CT低剂量扫描及后处理技术可作为小儿气道异物阻塞术前检前最安全、最准确、最快捷的筛查的首选手段。更多还原

【Abstract】 To investigate low-dose spiral CT and MPR in diagnosing the foreign body in trachea and bronchi in children before the operation.Low-dose spiral CT 、MPR and CTVB were performed in 211 patients with foreign body in trachea and bronchi,and the results of the bronchi endoscopy were compared.The foreign bodies were divided into three types on the basis of their location.The accordance rate of X ray、CT、MPR and CTVB in diagnosing the foreign body in trachea and bronchi(type I、type II、type III) is 9.52%、64.29%、44.44%;100.00%、93.51%、77.78%;100.00%、98.70%、97.22%,respectively.The sensitivity of low-dose spiral CT、MPR and CTVB was the best,then the CT and X-ray.The results of CT were coincidence with the results of endoscopy.Low-dose spiral CT 、MPR and CTVB had significant clinical value in diagnosing the foreign body in trachea and bronchi in children.更多还原