title: Normal and degenerative posterior spinal structures: MR imaging.
abstract: A retrospective study of the magnetic resonance (MR) images of the lumbar spines of 13 healthy subjects and 30 patients with degenerative changes was done. In the healthy subjects, the vertebral facets, thickness of the cartilage and ligamentum flavum, signal characteristics of the bone marrow, and size of the spinal canal were studied. In the patients with degenerative changes in one of these structures, MR images in the sagittal plane were useful in demonstrating hypertrophy of the ligamentum flavum or the vertebral facets, in grading the degree of foraminal stenosis, and in measuring the sagittal diameter of the spinal cord. MR images in the axial plane facilitated detailed analysis of the facet joint and more accurate measurements of the thickness of the ligamentum flavum and spinal canal diameter. MR images were compared with computed tomography scans in 12 patients.
authors: Department of Radiology, David W. Devon Medical Imaging Center, Hospital of the University of Pennsylvania, Philadelphia 19104.
authors: N
authors: N
authors: Grenier
authors: H Y
authors: HY
authors: Kressel
authors: M L
authors: ML
authors: Schiebler
authors: R I
authors: RI
authors: Grossman
authors: M K
authors: MK
authors: Dalinka
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002356:Cartilage / Q000033:anatomy & histology / Q000000981:diagnostic imaging / Q000473:pathology; D005260:Female; D006801:Humans; D007403:Intervertebral Disc / Q000033:anatomy & histology / Q000000981:diagnostic imaging / Q000473:pathology; D008022:Ligaments / Q000033:anatomy & histology / Q000000981:diagnostic imaging / Q000473:pathology; D008159:Lumbar Vertebrae / Q000033:anatomy & histology / Q000000981:diagnostic imaging / Q000473:pathology*; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D011859:Radiography; D012189:Retrospective Studies; D013122:Spinal Diseases / Q000175:diagnosis / Q000000981:diagnostic imaging / Q000473:pathology; D013130:Spinal Stenosis / Q000175:diagnosis / Q000000981:diagnostic imaging / Q000473:pathology