magnetic resonance imaging of lumbar spine: periosseous mass of L4 vertebra with hypointense T1 signal
magnetic resonance imaging of lumbar spine: periosseous mass of l4 vertebra with hypointense t1 signal
L-spine MRI T1-weighted osseous mass hypointense signal L4 periosseous
l-spine mri t1-weighted osseous mass hypointense signal l4 periosseous