Lumbar spine: quantitative and qualitative assessment of positional (upright flexion and extension) MR imaging and myelography

Wildermuth S, Zanetti M, Duewell S, Schmid M, Romanowski B, Benini A, Böni T, Hodler J. Lumbar spine: quantitative and qualitative assessment of positional (upright flexion and extension) MR imaging and myelography. Radiology 1998; 207:391-8.