| 李娜,屈辉,白荣杰,张景秀,王树锋.脊髓造影后64排螺旋CT诊断臂丛神经节前损伤[J].中国医学影像技术,2007,23(11):1693~1696 |
| 脊髓造影后64排螺旋CT诊断臂丛神经节前损伤 |
| Diagnosis of brachial plexus injury by 64-slice CT-myelography |
| 投稿时间：2007-07-05 修订日期：2007-09-20 |
| DOI： |
| 中文关键词: 损伤 臂丛 脊髓 体层摄影术,X线计算机 |
| 英文关键词:Injury Brachial plexus Spinal cord Tomography, X-ray computed |
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| 中文摘要: |
| 目的 探讨脊髓造影后64排螺旋CT扫描对臂丛神经节前损伤的诊断价值。方法 22例臂丛神经损伤患者行脊髓造影后,采用东芝Aquilin 64排CT扫描机薄层螺旋扫描。分析CTM图像,以手术探查结果为金标准。结果 臂丛神经节前损伤的直接征象包括神经根缺失、神经根断裂、神经根部分根丝断裂;间接征象包括创伤性脊膜囊肿、硬膜囊变形、脊髓表面部分裸露等。本组患者CTM检查共检出异常神经根73个。计算CTM诊断的灵敏度、特异度和准确度分别为93.4％、93.3％和93.4％;阳性预测值和阴性预测值分别为97.3％和84.8％。结论 64排螺旋CT在扫描层厚与曲面重建等方面的优势进一步提高了诊断的特异度,但仍存在一定的假阴性率。 |
| 英文摘要: |
| 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. |
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