The Value Of DTI In The Diagnosis Of Compression Injury Of Lumbosacral Nerve Root

Objective:To explore the application value of DTI in the location diagnosis of compression injury of lumbosacral nerve root,and to make sure the accuracy of the location diagnosis.Method:25 patients with unilateral lumbar disc herniation combined with nerve root compression were selected for study.All patients were examined with CT and MRI before operation.On this basis,EMG and DTI were examined,and then operation was performed to make clear exploration.Finally,the coincidence rate between the results of above MRI,EMG and DTI and the results of operation exploration was compared,and the visual acuity of pain before and after operation was compared Visual analogue scale(VAS).Result:The results of MRI and EMG were different from those of surgical exploration.The sensitivity of MRI and EMG was 84% and 76%,respectively.The sensitivity of DTI was 92%,which showed that L4-S1 nerve root compression was basically the same as that of intraoperative,which was significantly higher than that of MRI and EMG(P < 0.05).The preoperative VAS score was 7.45 ± 1.5,and the postoperative VAS score was 2.4 ± 0.5(P < 0.05).No obvious complications occurred in all patients.Conclusion:MR diffusion tensor imaging can clearly show the location and scope of lumbosacral nerve root damage,which is more sensitive than routine examination,and has a positive role in clinical diagnosis and prognosis.