Figure 4. (a) Sagittal T₂ weighted and (b) post-gadolinium T₁ weighted MR images of the lumbar spine. The patchy areas of high signal on T₂ weighted images (a) in vertebral bodies correspond to bone marrow infiltration and oedema, with enhancement on post-gadolinium images (b). Enhancement of the meninges and small epidural soft tissue masses (arrowheads) show extension into the spinal canal.