Diagnostic value of high-resolution MRI for nerve root compression in lumbar intervertebral foramen stenosis
10.3969/j.issn.1002-1671.2024.05.023
- VernacularTitle:高分辨率MRI对腰椎间孔狭窄神经根受压诊断价值
- Author:
Yuxin HE
1
;
Rong WU
;
Ligang GENG
;
Shili HE
;
Gaofeng ZHANG
Author Information
1. 遵义医科大学第二附属医院医学影像科,贵州 遵义 563000
- Keywords:
high-resolution magnetic resonance imaging;
intervertebral foramen;
nerve root
- From:
Journal of Practical Radiology
2024;40(5):781-784
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore the correlation value of high-resolution MRI on the cause,location and degree of nerve root com-pression and clinical symptoms of lumbar intervertebral foramen stenosis.Methods Patients with sciatic neuralgia underwent con-ventional MRI examination of the lumbar spine before treatment.MRI thin layer(1 mm)intervertebral disc axial scan was performed on patients with suspected L4/L5 and L5/S1 intervertebral foramen stenosis,and the value of conventional MRI and high-resolution MRI on intervertebral foramen stenosis location,etiology and Elisabeth typing was compared and analyzed.Intervertebral foramen mor-phometric indicators,nerve root length and short diameter were measured on high-resolution MRI post-processed images and their correlation with visual analogue scale(VAS)scores of clinical symptoms was analyzed.Results Sixty-one patients were effectively diagnosed with intervertebral foramen stenosis and nerve root compression after surgery or conservative treatment.The diagnosis rate of conventional MRI for the cause of intervertebral foramen stenosis was 75.4％,and the diagnosis rate of high-resolution MRI post-processed was 91.8％.The Elisabeth typing of lumbar intervertebral foramen stenosis was positively correlated with clinical symp-toms,while the nerve root short diameter and peri-nerve fat space area were negatively correlated with VAS score.Conclusion High-resolution MRI is significantly better than conventional MRI for the diagnosis of nerve root compression in intervertebral fora-men stenosis.It visually shows the location,cause and degree of nerve root compression,which can better guide the clinical and accu-rate minimally invasive surgery.
