magnetic resonance imaging of cervical spine: mass of posterior aspect of C1 vertebra with hypointense T2 signal
magnetic resonance imaging of cervical spine: mass of posterior aspect of c1 vertebra with hypointense t2 signal
magnetic resonance imaging of cervical spine: mass of posterior aspect of C1 vertebra with hypointense T2 signal (procedure)
magnetic resonance imaging of cervical spine: mass of posterior aspect of c1 vertebra with hypointense t2 signal (procedure)