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Journal of Korean Neurosurgical Society > Volume 26(3); 1997 > Article
Journal of Korean Neurosurgical Society 1997;26(3): 407-415.
Magnetic Resonance Neurography with Short Tau Inversion Recovery Sequences for Cervical Radiculopathy.
Seung Min Lee, Jae Young Yang, Chun Sik Choi, Mun Bae Ju, Eun Kyung Youn
1Department of Neurosurgery, Kangbuk Samsung Hospital, Seoul, Korea.
2Department of Diagnostic Radiology, Kangbuk Samsung Hospital, Seoul, Korea.
ABSTRACT
In magnetic resonance(MR) imagings with short tau inversion recovery(STIR) sequences fat signals are specifically suppressed. These imaging techniques, therefore, have been used to identify optic nerve lesions in the orbits, because there are a lot of fat tissues which may obscure the optic nerves in the orbit. The cervical spinal nerves or ventral primary rami of brachial plexus, during their courses in the necks between anterior and middle scalene muscles, are also surrounded by considerable amount of fat deposits. So we used these MR imaging techniques with already used posterior neck coil system, to image cervical spinal nerves directly, and to know whether there are certain signal changes in those nerves of the involved nerve roots, in 12 patients who were considered to have cervical radiculopathies by conventional diagnostic means. In MR neurography with STIR sequences(STIR MRN) of axial and coronal images, signals of the cervical spinal nerves of the involved roots were detected as fairly bright, and were discerned from signals of the spinal nerves of the uninvolved roots. We also measured contrast-to-noise ratio(CNR) of the spinal nerve signals of the involved and uninvolved roots in axial images. The average CNR value of the former was 4.48+/-0.889 and of the latter 1.40+/-0.274. Our fingings indicate that STIR MRNs can be helpful in limiting the lesions more accurately and in making surgical decisions for cervical radiculopathies caused by multileveled discs or spondylosis.
Key Words: MR neurography; STIR sequences; Cervical spinal nerve; Radiculopathy
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