多层螺旋CT后处理技术对胸骨细微骨折的诊断价值

目的探讨多层螺旋CT（MSCT）后处理技术对胸骨细微骨折诊断价值。方法搜集经16层螺旋CT常规胸部容积扫描诊断的胸骨细微骨折69例,利用工作站进行图像后处理,选用多种后处理技术,即多平面重建（MIR）、容积再现法（VR）等重组观察,并与CT横断图像进行比较。结果 69例胸骨细微骨折中,横断骨折为48例（占69.6%）,斜行骨折12例（占17.4%）,不全性骨折9例（占13.0%）。矢状位MPR图像对胸骨细微骨折显示率为100%,冠状位显示率为84.1%,横断位显示率为62.3%。结论 MSCT的后处理技术图像可以准确地检出胸骨细微骨折,明显优于横断面图像,尤其是矢状位MPR图像可以避免胸骨细微骨折的漏诊。

Diagnostic Value of Multislice Spiral CT Post-processing Technology in the Sternum Subtle Fracture

Objective To investigate the diagnosis value of multislice spiral CT （MSCT） post-processing technology in sternum subtle fracture. Methods 69 cases of assternum subtle fracture were routinely chest volume scanned by 16-slice spiral CT. After transferring to workstation, post-processing techniques were used to reconstruction and observed with the comparing with cross-sectional, including multi-planar reconstruction （MIR）, volume rendering （VR）. Results Among 69 cases of sternal subtle fractures, there were 48 cases（69.6%,48/69） of transverse fracture, 12 cases（17.4%,12/69） of oblique fracture, and 9 cases（13.0%,9/69） of incomplete fracture. It indicated that the percentage of sagittal MPR image displaying on the sternum subtle fracture was 100%, cross-sectional displaying rate was 84.1%, and transverse-bit display rate was 62.3%. Conclusion MSCT post-processing image techniques can accurately detect sternal subtle fracture. It was significantly better than the cross-sectional images, particularly sagittal MPR image can avoid misdiagnosis of sternum subtle fracture.