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Lumbar foraminal stenosis is a common pathologic entity of lumbar radioculopathy. The preoperative identification of the symptomatic lumbar foraminal stenosis is important because incidence of asymptomatic foraminal stenosis found by magnetic resonance (MR) imaging is quite high in asymptomatic elderly patients. The lack of recognition of this entity or inadequate treatment of nonspecific lateral canal stenosis is associated with failed back surgery syndrome (1-4). MR imaging is widely used in the evaluation of lumbar foraminal stenosis. Morphologic changes of the foramen are well demonstrated on sagittal MR images (5). However, it is often difficult to differentiate between symptomatic and asymptomatic lumbar foraminal stenosis on conventional MR imaging. In patients with lumbar foraminal stenosis, detection of morphologic changes of the nerve root rather than those of the foramen on MR imaging can reduce the incidence of failed back surOriginal Article

daehan yeongsang uihak hoeji/daehan yeongsang ui haghoeji

Three-Dimension Magnetic Resonance Lumbosacral Radiculography by Principles of the Selective Excitation Technique Imaging in the Diagnosis of Symptomatic Foraminal Stenosis