magnetic resonance imaging of lumbar spine: mass of medial aspect of L4 vertebra with isointense T1 signal
magnetic resonance imaging of lumbar spine: mass of medial aspect of l4 vertebra with isointense t1 signal
spine magnetic resonance imaging T1-weighted lumbar osseous mass isointense signal L4 medial
spine magnetic resonance imaging t1-weighted lumbar osseous mass isointense signal l4 medial