magnetic resonance imaging of lumbar spine: 'bone within a bone' appearance of L1 vertebra
magnetic resonance imaging of lumbar spine: 'bone within a bone' appearance of l1 vertebra
magnetic resonance imaging of lumbar spine: 'bone within a bone' appearance of L1 vertebra (procedure)
magnetic resonance imaging of lumbar spine: 'bone within a bone' appearance of l1 vertebra (procedure)