Gambaran MRI

Recurrent postoperative disk extrusion at L4-5 after L4-5 diskectomy. Axial and sagittal T1-weighted images obtained before and after contrast enhancement reveal a rim of enhancing, recurrent left central disk extrusion with downward migration

Right L5 radiculopathy. Sagittal T1- and T2-weighted images show a large, right central disk extrusion at L4-5 that markedly compresses the thecal sac. The extruded disk migrates cranially, compressing the right L5 nerve root

Right S1 radiculopathy. Axial T1- and T2-weighted images at L5-S1 show a large, right paracentral disk extrusion causing marked compression of the thecal sac. Images show compression, but the right S1 root is not visible. The extruded disk also has mild cranial extension that compresses the right L5 root

Sagittal T2-weighted imaging of lumbosacral spine shows an annular tear at L4-5 and disk protrusion at the L5-S1 levels.

Axial T1- and T2-weighted images show moderate posterior central disk extrusion at L5-S1 level compressing the S1 nerve roots

Sagittal T1- and T2-weighted images and axial T1- and T2-weighted images show degenerative changes at the L1-2 and L2-3 levels, facet hypertrophy at the L4-5 level, and disk herniation leading to extrusion and compressing the left L5 root.

Sagittal T1- and T2-weighted gradient-echo images obtained at C5-6 show a moderate to severe central disk extrusion that causes cord compression with abnormal signal intensity in the cord. Gradient-echo images improve the contrast to distinguish between the hyperintense disk and the hypointense osteophytosis.

Gambaran ct-scan

Axial CT myelogram of a large, central calcified disk extrusion present at the T5-6 level; it causes severe spinal cord compression.

Axial CT myelogram shows a posterior central disk extrusion present at the T11-12 level; it compresses the cord.

Sagittal reformatted CT myelogram shows a large, calcified, posterior central disk extrusion causing severe cord compression at the T5-6 level.

Axial CT myelogram shows posterior, central disk protrusion present at T11-12 level. Mild cord compression is noted.