MRI诊断肘管综合征的影像与临床应用研究

The clinnical application of MRI in the study of cubital tunnel syndrome

目的:探讨MRI对肘管综合征的影像及临床应用价值。方法:对18例肘管综合征患者和20例健康成年人行肘部3.0T MR横轴面、冠状面及矢状面扫描,扫描序列包括SE T1WI、脂肪抑制SE T2WI和脂肪抑制SE PDWI。对比分析患者组和对照组中肘部尺神经的信号及形态特点。结果:患者组和对照组中尺神经的横截面积分别为(0.17±0.08)和(0.07±0.01)cm^2,两组间差异有统计学意义(P<0.001);两组中尺神经/肌肉信号强度比分别为2.82±1.41和1.56±0.38,两组间差异有统计学意义(P=0.002)。18例肘管综合征患者中有13例行肘管内尺神经减压术,5例行保守治疗。结论:MRI可显示肘管综合征患者肘部尺神经的变化,是一种能较好地评估肘管综合征的检查方法。

Objective：To explore the clinical application value of MRI for cubital tunnel syndrome. Methods：Eighteen patients with cubital tunnel syndrome and twenty healthy volunteers （control group） were examined by MRI in coronary, sagittal and axial position. The scan sequences were as follows：SE T1WI, SE T2 WI and fat-suppression SE PDWI. Signal in- tensity and size of ulnar nerve in patient and normal group were measured and compared statistically. Results：The area of ul- nar nerve in the patient and control group was （0.17±0.08）cm2 and （0.07 ± 0.01）cm2 , there was statistically significant difference （P〈0. 001）. The relative signal intensity of ulnar nerve in patient group and control group was （2.82 ± 1.41） and （1.56 ± 0.38）, there was statistically significant difference （P= 0. 002）. Among the eighteen patients, thirteen were operated for ulnar nerve decompression, five underwent conservative treatment. Conclusion： MRI can show the changes of size and signal intensity of ulnar nerve in patients with ulnar neuropathy,it is an useful method in evaluating ulnar neuropa- thy at the elbow.