Two-dimensional Multiple-echo Recalled Gradient Echo Sequence at Flexion Position in the Diagnosis of Hirayama Disease
10.3969/j.issn.1005-5185.2013.10.007
- VernacularTitle:屈颈位二维多回波恢复梯度回波序列诊断平山病的价值
- Author:
Yuanyuan QIN
;
Shun ZHANG
;
Yan ZHANG
;
Wenzhen ZHU
- Publication Type:Journal Article
- Keywords:
Muscular atrophy;
Upper extremity;
Magnetic resonance imaging;
Two-dimensional multiple-echo recalled gradient echo;
Cervical vertebrae;
Adolescent
- From:
Chinese Journal of Medical Imaging
2013;(10):745-748
- CountryChina
- Language:Chinese
-
Abstract:
Purpose To evaluate the diagnostic value of two-dimensional multiple-echo recalled gradient echo (2D MERGE) with flexural position in the hirayama disease. Materials and Methods Conventional MRI and axial MERGE images (7 cases) were analyzed and the anteroposterior diameter was measured at C6 vertebral body, and the structure of spinal, extramedullary and subdural space and extradural space were compared. Results The anteroposterior diameter was (5.7±0.6) cm and (4.7±0.5) cm in the neutral position and flexural position (t=-2.95, P<0.05). The“butterfly”shape of spinal grey matter could not be detected in the 4 cases on MERGE with flexural position, which could not demonstrated on the conventional MR images. 2D MERGE was not sensitive for the CSF flow artefacts and the contrast between spinal and surrounding structures was improved. However, the vascular images could not displayed on 2D MERGE images. Conclusion 2D MERGE sequence is better than T1WI and T2WI on sagittal view and T2WI on axial view in the pathological changes of hirayama disease except flow-empty vein sign, thus it has an important role in diagnosing hirayama disease.
