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Extraforaminal With or Without Foraminal Disk Herniation: Reliable MRI Findings
- Source :
- American Journal of Roentgenology. 192:1392-1396
- Publication Year :
- 2009
- Publisher :
- American Roentgen Ray Society, 2009.
-
Abstract
- The purpose of our study was to evaluate spinal MR images for extraforaminal disk herniation with or without foraminal disk herniation to determine the reliable MRI findings.Thirty-five patients with extraforaminal with or without foraminal disk herniation confirmed at radiculography or surgery between March 2005 and July 2007 underwent spinal MRI. We assessed the morphologic features of the disk, changes in nerve root thickness, epidural fat obliteration surrounding the nerve root, and displacement of the nerve root in the foraminal and extraforaminal zones.Mixed disk herniation was found in 23 patients, and purely extraforaminal herniation was found in 12 patients. Focal eccentricity of the disk contour was identified in 32 patients (91%). Change in the nerve root thickness was found in 30 patients (86%). The nerve roots were displaced in 22 patients (63%), and the original location was maintained in nine patients (26%). Differentiation between the disk and the nerve root was poor in four of the 35 patients (11%). Obliteration of the epidural fat surrounding the nerve root was present in all patients.The presence of extraforaminal with or without foraminal disk herniation should be ascertained on the basis of the following MRI findings: focal eccentricity of the disk contour, obliteration of epidural fat surrounding the nerve root, change in the thickness of the nerve root, and displacement of the nerve root.
- Subjects :
- Adult
Male
medicine.medical_specialty
Lumbar Vertebrae
Nerve root
business.industry
Spinal mri
General Medicine
Lumbar vertebrae
Middle Aged
Magnetic Resonance Imaging
medicine.anatomical_structure
medicine
Humans
Female
Radiology, Nuclear Medicine and imaging
Radiology
Mr images
Nuclear medicine
business
Intervertebral Disc Displacement
Mri findings
Aged
Subjects
Details
- ISSN :
- 15463141 and 0361803X
- Volume :
- 192
- Database :
- OpenAIRE
- Journal :
- American Journal of Roentgenology
- Accession number :
- edsair.doi.dedup.....11606f6600f93eed4dd7123b40d4a9a7