magnetic resonance imaging of lumbar spine: cephalad mass of L4 vertebra with hypointense signal intensity (S/I) ratio
magnetic resonance imaging of lumbar spine: cephalad mass of l4 vertebra with hypointense signal intensity (s/i) ratio
L-spine MRI osseous mass signal intensity (S/I) ratio hypointense L4 cephalad
l-spine mri osseous mass signal intensity (s/i) ratio hypointense l4 cephalad