postoperative magnetic resonance imaging of cervical spine: mass of C1-C2 intravertebral disc space
postoperative magnetic resonance imaging of cervical spine: mass of c1-c2 intravertebral disc space
C-spine MRI intravertebral disc space postoperative mass C1-C2
c-spine mri intravertebral disc space postoperative mass c1-c2