多层螺旋CT对颅底骨折诊断的应用价值

Value of multi-slice helical CT in diagnosis of basicranial fracture

目的探讨多层螺旋CT在颅底骨折诊断中的应用价值。方法对62例颅底骨折患者行16层螺旋CT常规扫描后，再行薄层扫描，经工作站进行多平面重建（MPR）、容积再现法（VR）成像，并比较其显像效果。结果在对前颅窝和中颅窝颅底骨折的CT诊断中，薄层CT扫描并MPR阳性显示率分别为100．0％和95．0％，与常规CT扫描相比（分别为67．9％和45．0％）差异有统计学意义（P均〈0．01）。对后颅窝颅底骨折的显示率，薄层CT扫描并MPR阳性显示率为100．0％，常规CT扫描阳性显示率为88．9％，二者比较差异无统计学意义（P〉0．05）。结论多层螺旋CT薄层扫描可提高颅底骨折的诊断率。

Objective To investigate the value of application of multi-slice helical CT（MSCT） in diagnosis of basicranial fracture. Methods Sixty-two patients with basicranial fracture were scanned with thin-section scanning mode after conventional CT scanning. The images were transferred to the work-station for reconstruction including multiplanar reconstruction （MPR）, volume rendering （VR）. Comparison between thin-section scanning images and conventional CT scanning images were performed. Results Compared with the conventional CT scanning （67.9% and 45.0% respectively）, the rates of fracture displayed of images acquired from thin-section scanning in diagnosis of fractures of anterior and middle cranial fossa （100.0% and 95.0% respectively）,P 〈 0.01. The two scanning mode in diagnosis of fractures of posterior cranial fossa（88.9% and 100.0% respectively）differed from each other unstatistically（P 〉 0.05 ）. Conclusion The thin-section scanning of MSCT can improve the diagnostic correctness of basicranial fracture.