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《Chinese Journal of Medical Imaging Technology》 2007-11
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Diagnosis of brachial plexus injury by 64-slice CT-myelography

LI Na1,QU Hui1,BAI Rong-jie1,ZHANG Jing-xiu1,WANG Shu-feng2(1.Department of Radiology,2.Department of Hand Surgery,Beijing Jishuitan Hospital,Beijing 100035,China)  
Objective To evaluate 64-slice CT-myelography(CTM)in diagnosing brachial plexus pre-ganglionic injury.Methods Twenty-two cases with brachial plexus injury underwent 64-slice CT scanning after myelography.Images of CTM were reviewed with surgical findings as gold standard.Results Direct signs of brachial plexus pre-ganglionic injury included lack of nerve root,rupture of nerve root,and rupture of partial cercical rootlets.Indirect signs included post-traumatic spinal meningocele,deformity of dural capsule,exposure of part of the surface of spinal cord,et al.CTM detected 73 injured nerve root.The sensitivity,specificity and accuracy were 93.4%,93.3% and 93.4%,respectively.The positive predictive value and negtive predictive value were 97.3% and 84.8%,respectively.Conclusion The thin thikness and curvical planar reconstruction function of 64-slice CT may improve the specificity of diagnosis of brachial plexus pre-ganglionic injuries.But there is probability of false negative.
【CateGory Index】: R816.1;R651.3
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