诊断学理论与实践2018，Vol.17Issue(2)：197-201,5.DOI:10.16150/j.1671-2870.2018.02.015
创伤性臂丛神经损伤的磁共振成像3D-FIESTA-C、IDEAL序列特征及诊断价值
The features and diagnostic value of 3D-FIESTA-C and IDEAL sequences for brachial plexus injury
摘要
Abstract
Objective: To study the features and diagnostic value of MRI 3 D-FIESTA-C (three-dimensional fast imaging employing steady state acquisition with cycled phases) and IDEAL (iterative decomposition of water and fat with echo asymmetry and least squares estimation) for traumatic brachial plexus injury. Methods: Thirty-two cases of traumatic brachial plexus injury were examined by MRI 3 D-FIESTA-C and IDEAL sequences before operation. The imaging data were treated with post processing imaging. The diagnostic results were compared with the findings in operation. The value of MRI 3 D-FIESTA-C and IDEAL sequences for diagnosing traumatic brachial plexus injury before operation was evaluated. Results: It revealed postoperatively that preganglionic brachial plexus injury occurred in 12 cases (39 nerves).The features of preganglionic brachial plexus injury in MRI 3 D-FIESTA-C sequence included disappearance or disruption of nerve root (31), and decrease of nerve root filaments (7) with nerve root sleeve abnormality, meningeal cyst, sheath thickening and abnormal spinal cord signal. Compared with the findings in surgery, the sensitivity, specificity and accuracy of 3 D-FIESTA-C sequence in diagnosing preganglionic brachial plexus injury were 97.5％, 100％, 98.3％, respectively.Postganglionic injury occurred in 31 cases (45 nerves), IDEAL sequence showed continuity interruption (42), and the others showed nerve trunk enlargement, distortion, rigidity, adjacent structure disorder and edema. Compared with the finding in surgery, the sensitivity, specificity and accuracy of IDEAL sequence in diagnosing postganglionic injury were 96.7％, 100％, 97.1％, respectively. Conclusions: MRI 3 D-FIESTA-C and IDEAL sequences are excellent in revealing preganglionic brachial plexus injury and postganglionic injury. Their diagnosis accuracy rates are high. MRI is noninvasive and optimal for clinical diagnosis.关键词
磁共振成像/三维循环相位稳态采集快速成像/创伤性/臂丛神经损伤Key words
Magnetic resonance imaging/Three-dimensional fast imaging employing steady state acquisition with cycled phases/Iterative decomposition of water and fat with echo asymmetry and least squares estimation/Traumatic/Brachial plexus injury分类
医药卫生引用本文复制引用
赵华丽,徐文鹏,梁宗辉..创伤性臂丛神经损伤的磁共振成像3D-FIESTA-C、IDEAL序列特征及诊断价值[J].诊断学理论与实践,2018,17(2):197-201,5.基金项目
上海市静安区卫生系统人才培养计划学科带头人 (JWRC2014D04) （JWRC2014D04）
