摘要
Abstract
Objective To discuss the value of low-dose chest 16-slice spiral CT scan in the examination of foreign hodies in bronchi of children. Methods Forty-eight children with foreign bodies aspiration were scanned transversely and reconstructed in different doses of the line check, twenty-eight were scanned witb low-dose, the others were scanned with conventional dose. Then the original axial data were transferred to workstation for image reconsruction by multi-planar reconstruction (MPR), minimum intensity projection (MinIP), volume rendering (VR) and CT virtual endoscopy (CTVE) respectively. The sensitivity and accuracy were analyzed. Results Twenty-seven cases were diagnosed with foreign bodies in those scanned with low-dose, diagnostic accuracy was 96.4％. Twenty cases were diagnosed with foreign bodies diagnostic accuracy was 100％. The difference was not statistically significant (P＞0.05). Conclusion Low-dose chest 16-slice spiral CT scan can not only reduce the radiation dose received but also clearly show the site, the shape and the size of foreign body, and even the position of obstruction after post-processing image reconstruction. It is a non-invasive and practical diagnostic technique in the examination of foreign hodies in bronchi of children.[Chinese Medical Equipment Journal, 2011 , 32( 5 ) : 67-68]关键词
16层螺旋CT/体层摄影术/低剂量/气道/异物Key words
16-slice spiral CT/ tomography/ low-dose/ bronchi/ foreign body分类
机械制造
