MRI manifestations of radiation myelopathy
10.13929/j.issn.1003-3289.2024.12.020
- VernacularTitle:放射性脊髓病MRI表现
- Author:
Huiying CHEN
1
;
Xingwen SUN
1
;
Songbo HAN
1
;
Huishu YUAN
1
;
Lihua ZHANG
1
Author Information
1. 北京大学第三医院放射科,北京 100191
- Publication Type:Journal Article
- Keywords:
spondylitis;
radiotherapy;
magnetic resonance imaging
- From:
Chinese Journal of Medical Imaging Technology
2024;40(12):1900-1903
- CountryChina
- Language:Chinese
-
Abstract:
Objective To observe MRI manifestations of radiation myelopathy(RM).Methods Nine patients who developed RM due to radiotherapy after tumor resections were retrospectively enrolled,and clinical and imaging data were analyzed.Results Non-contrast enhanced MRI showed spinal cord swelling and thickening in all 9 cases,which could involve C1-T5 level,presented as low signals on T1WI and high signals on T2WI.The length of spinal cord edema was 30-178 mm,with a median of 90 mm.Lateral spinal cord involvements were detected in 8 cases,gray matter involvements were found in 9 cases,while posterior spinal cord involvements were noticed in 7 cases.Enhanced scanning was performed in 4 cases,and RM lesions presented as moderate"nodule"or"strip"like enhancements with length of 19-53 mm,and their distribution consistent with tumor resection areas.Four patients underwent MRI follow-up,the ranges of spinal cord edema gradually decreased or expanded at first and then decreased.Conclusion RM mainly presented as spinal cord thickening and edema on MRI,with low signals on T1WI and high signals on T2WI.Moderately"nodule"or"strip"like enhancements could occur in some lesions,with distribution consistent with surgical resection areas.
