Working from caudal to rostral observe:
· Neural foramina and nerve roots: Observe for compression
· Intervertebral discs: width, protrusions/ herniations
· Spinal column: alignment (spondylolisthesis), vertebral body shape (compression fractures, Schmorls’ nodes), posterior bony elements (spondylolysis), degenerative end plate changes (changes in fat content), hemangiomas.
· Retroperitoneal space: adenopathy, masses, great vessel aneurysm, etc
STEP (2) T2 sagittals (spinal fluid is bright)
Working from caudal to rostral observe:
· Dural sac—cord and rootlets: width, compression, irregularities
· Intervertebral discs: width, protrusions/ herniations, hydration, high intensity zones
· Spinal column: alignment (spondylolisthesis), vertebral body shape (compression fractures, Schmorls’ nodes), posterior bony elements (spondylolysis), degenerative end plate changes (changes in fat content), hemangiomas.
· Posterior bony elements: breakage, listhesis, pseudo-articulations, etc.
STEP (3) T1 Axials (CSF appears gray and fat appears bright) Proceed sacral to rostral
Orientation – neural foramina lie at level of discs.
·
Content of the spinal canal and neural foramina: Trace course of nerve roots through neural foramina
· Intervertebral discs— continuity, bulges, etc.
· Bone – Vertebral bodies; spondylolisthesis, posterior bony elements (spondylolysis, breakage)
· Ligamentam flavum: thickened appearance, impingement
· Retroperitoneal space: adenopathy, masses, muscle, etc.
STEP (4) T2 Axials (spinal fluid appears bright) Work from sacrum to rostral
·
Content of the spinal canal and neural foramina: Trace course of nerve roots through neural foramina
· Intervertebral discs— continuity, bulges, etc.
· Bone – Vertebral bodies; spondylolisthesis, posterior bony elements (spondylolysis, breakage)
· Ligamentam flavum: thickened appearance, impingement
· Retroperitoneal space: adenopathy, masses, muscle, etc.
STEP (5) Assessment and Plan
· Assessment: Ensure you have covered all structures. Assess need for other studies
·
Plan: Patient care plan.
Rainville, J et al. A Guide to Interpreting Magnetic Resonance Imaging of the Lumbar Spine. Harvard Department of PM&R Lecture Series. Adapted with permission from James Rainville, M.D.
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