The value of CT low dose scan and post-processing techniques in tracheal foreign body of children
LIANG Hui
REN Qing-qin
Abstract：Objective To evaluate the values of low-dose CT scan and post-processing techniques in diagnosis of tracheal foreign body of children .Methods Ninty-six children with tracheal foreign bodies were scanned by 256-slice spiral CT scanned at 100 kV and 40~80 mA ,slice thickness :5 mm ,increment 5 mm ,pitch 0 .396 ,reconstructed at slice thickness 0 .625 mm ,increment 0 .625 mm .All the data were post-procesed by workstation ,post-processing techniques inciuding MPR ,MinIP ,CTVB ,then compared with bronchoscopy .Results All the post-processing imaging of 96 tracheal foreign body were satisfied ,the diagnostic accuracy of spiral CT with post-processing techniques was 97 .9% ,Coincidence rate of foreign body localization was 97 .9% compared with bronchoscopy ,MPR (including CPR) and MinIP were the best in dis-playing foreign body and limitations of the trachea ,bronchial obstruction .Conclusion Low-dose CT scan can be used to diagnose tracheal foreign body of children ,but should be comprehensive analysis using axial view and various post-process-ing techniques .The direct sign of this disease is foreign bodies ,but the final diagnosis of limitations of the bronchial ob-struction needs to combine other signs .
Keywords：Low-dose CTPost-processing techniqueForeign bodyTracheaChildren
Publication Date：2014-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 1315-1317,1320 )