MSCT扫描技术在诊断婴幼儿气管支气管非金属异物中的应用价值

Application of MSCT scanning technique on the diagnosis of infant tracheal and bronchial nonmetal foreign body

目的探讨多层螺旋CT(MSCT)扫描技术在诊断婴幼儿气管支气管非金属异物中的应用价值及地位。方法使用四排螺旋CT对32例可疑气管支气管非金属异物病例行薄层CT扫描,运用容积扫描作多平面重建、曲面重建、CT仿真内窥镜成像等图像后处理,明确诊断后即由纤维支气管镜取出。结果32例婴幼儿气管支气管非金属异物,其中气管6例、右主支气管12例、中间支气管1例、右肺下叶支气管8例、左主支气管4例、左肺下叶支气管1例,纤维支气管结果与CT结果一致。结论多层螺旋CT薄层扫描结合后期重建技术对婴幼儿气管支气管异物的直接征像和间接征像的显示率为100%。MSCT扫描技术是诊断气管支气管非金属异物的最可靠手段,MSCT扫描是诊断气管支气管非金属异物的首选检查。

[Objective] To assess the application and significance of MSCT （multislice spiral CT） scanning technique on the diagnosis of infant tracheal and bronchial nonmetal foreign body. [Methods] 32 eases of infants with suspected tracheal and bronchial nonmetal foreign body were scanned with thin-slice collimations by MSCT, and the postproeessing of MPR （multiplanar reformation）, cMPR （curve MPR）, CTVE （virtual endoscopy） were made by using the volume data. The foreign body were extracted by bronchial endoscopy after the diagnosis were definite. [Resuits] 32 infants with tracheal and bronchial nonmetal foreign body included 6 eases in traehia, 12 in right main bronehia, 1 in middle bronehia, 8 in right inferior bronchia, 4 in left main bronchia, 1 in left inferior bronchia. The CT diagnosis were in accordance with that of bronchial endoscopy. [Conehtsions] The direct and indirect signs of foreign body were all displayed on MSCT thin-slice and postproeessing imagings. MSCT is the first choice method for diagnosing tracheal and bronchial nonmetal foreign body.