Mid-Sagittal MRI of the Lumbar Spine. Left (T1-weighted image); Right (T2-weighted image). On this view centered over the lumbar spine, one can see all five lumbar vertebrae in addition to the sacrum ...

From the lateral view the needle is adjusted to lie along the mid-pillar. Sensory stimulation at 50 Hz, 0.3–0.7 V is desirable, followed by motor stimulation at 2 Hz up to 2 V to confirm that ...