magnetic resonance imaging of lumbar spine: mass of L4 vertebra with isointense T1 signal
magnetic resonance imaging of lumbar spine: mass of l4 vertebra with isointense t1 signal
magnetic resonance imaging of lumbar spine: mass of L4 vertebra with isointense T1 signal (procedure)
magnetic resonance imaging of lumbar spine: mass of l4 vertebra with isointense t1 signal (procedure)