腰椎轴向负荷CT检查的临床意义  

Clinical Value of Axial Loading of the Lumbar Spine During Computed Tomography

作　　者：李翠平[1] 张立仁[1] 党玉庆[1] 王晓[1] 金征宇[1] 

机构地区：[1]中国医学科学院北京协和医学院、北京协和医院放射科,北京100032

出　　处：《放射学实践》2008年第12期1383-1386,共4页Radiologic Practice

摘　　要：目的:评估轴向负荷CT检查在腰椎退性行疾病诊断中的临床价值。方法:采用腰大肌放松体位(PRP)和腰椎伸位轴向负荷(ACE)两种体位进行CT检查,进行最大密度投影(MIP)重建,观察加压前后L2～S1各椎间盘中心层面的椎管腔最大横径、纵径及硬膜囊面积的变化,进行比较和统计学分析。结果:对比ACE与PRP体位CT检查,发现ACE体位检查后椎管横径、纵径变小,横截面积变小,均有显著性意义。结论:与PRP体位CT检查比较,ACE体位CT检查获得了更多的放射学诊断信息,可以作为临床诊断椎管狭窄的重要依据,其临床意义优于PRP体位CT检查。Objective：To estimate the clinical value of axial loading of the lumbar spine during computed tomography （CT） in patients with degenerative disorders of the lumbar spine. Methods：Patients with degenerative disorders were examined by CT in psoas-relaxed position （PRP） and axial compression in slight extension （ACE） position and reconstruction with maximum intensity projection （MIP） was performed. The maximum transverse diameter,sagittal diameter of vertebral canal and dural sac cross-sectional area of central layer of L2- S1 intervertebral disc were compared and statistically analyzed before and after loading. Results..CT examinations revealed the transverse diameter sagittal diameter of vertebral canal and dural sac cross-sectional areas of central layer were significantly decreased in ACE position as compared with PRP. Conclusions ： As compared to PRP CT,CT on the ACE position could obtain more radiological diagnosis information which is regarded as important evidence for clinical diagnosis of spinal stenosis.

关 键 词：轴向负荷 体层摄影术 X线计算机 腰椎 

分 类 号：R816.8[医药卫生—放射医学]