MSCT对颅底微细或隐匿性骨折的价值研究  

Study of Patients with Skull Base Bone Micro- or Occult- fracture by 16-MSCT

作　　者：李志忠[1] 欧幼宽[1] 杨廷桂[1] 王志杰[1] 吴祺钊 王福南 林瑜娜 连降霞[1] 李清清[1] 陈千里[1] 陈敏莉[1] 

机构地区：[1]福建省晋江市医院CT室

出　　处：《中国医学计算机成像杂志》2012年第6期525-528,共4页Chinese Computed Medical Imaging

基　　金：晋财指标[2009]339号;项目编号2009-2-59~~

摘　　要：目的:探讨16层螺旋CT(16-MSCT)对外伤性颅底微细或隐匿性骨折(MOF)的诊断价值。方法:随访常规头颅CT检查诊断有可疑外伤性颅底MOF者,利用3次复查分别采用5mm、2.5mm及1.25mm轴位螺旋扫描,并进行1.25mm及0.625mm高分辨率骨算法重建(以下简称骨重建)、采集数据完整者49例,结合二维及三维图像,进行阅片;按不同层厚扫描及重建分组计算MOF的显示率;进行自身对照;统计学采用卡方检验。结果:①、③、⑤比较及②、④、⑥比较,差异均无显著性(P>0.05);①与②比较、③与④比较及⑤与⑥比较差异均有高度显著性(P<0.01)。结论:以重建的图像作比较,MOF的显示率与原始扫描层厚无关,与重建层厚和重建间隔有关;0.625mm层厚骨重建能提高颅底MOF的显示率;其中5mm层厚螺旋扫描、0.625mm层厚骨重建具有更高性价比。Purpose： To evaluate the value of 16-MSCT in diagnosis of traumatic skull base bone micro- or-occult-fracture＇ s （MOF）. Methods： Patients with suspected traumatic skull base MOF were followed up by routine CT examination. When these patients were undergone follow-up exam, they were scanned by conventional 5mm, 2.5ram and 1.25mm thin-section helical CT, then 0.625mm, 1.25ram high resolution bone algorithm reconstruction were done separately. The data were collected completely in 49 cases. The detection rate of the skull base bone MOF was calculated. Results： When the comparisons were made between 0, @, and@ and between @, ~, and ~, the differences were not with statistical significant （P〉0.05）. When the comparisons were made between ~ and Q, between ~ and ~, and between @and ~, the differences were with statistical significant （P〈0.01）. Conclusion： The result of our study showed that the detection rate of the MOF had nothing to do with section thickness of the original scan, and it was relevant for the section and interval of the reconstructed image. When the slice thickness of the reconstructed image was 0.625 mm, the detection rate of the skull base MOF was the highest. To achieve a good performance, 5mm slice thickness helical scanning with 0.625 mm thickness bone reconstruction is suggested.

关 键 词：颅底 骨折 体层摄影术 X线计算机 骨算法 

分 类 号：R816.8[医药卫生—放射医学]