Left: Axial T2WI of posterior fossa is normal with good flow void in the basilar artery.
Right: Axial T1WIs with fat saturation show crescentic hyperintensity of both vertebral
arteries with narrowed lumens.
2D TOF MRA of the neck shows no visible flow in the left vertebral artery at the level of
C2 and trace flow in the right vertebral artery at C2. Flow is noted at the C1 level.
Attenuated flow within bilateral vertebral arteries at C3 level.
Left: Axial T1WI and T2WI shows normal flow void in the bilateral vertebral arteries
with resolution of the previous hyperintensity in the wall of the arteries.
Right: 2D TOF MRA of Neck shows good normal flow within both vertebral arteries without
Key words: mri mra vascular artery trauma
Bilateral vertebral artery dissections