Fig. 1
a Brain magnetic resonance imaging (MRI) at 90 minutes from symptom onset showing no high-intensity area on diffusion-weighted imaging (DWI). b Brain magnetic resonance angiography showing stenosis in the middle portion of the basilar artery (BA). c Cerebral angiography (45° right-anterior oblique view) showing intimal flap and double lumen in the middle and distal portions of the BA. Maximum intensity projection images of 3D rotational angiography showing double lumen of the BA in the coronal view (d), sagittal view (e), and axial view (f). g Cerebral angiography (45° right-anterior oblique view) after stenting. Enterprise VRD 4.5 × 22 mm2 (arrow: distal and proximal marker) and 4.5 × 28 mm2 (arrowhead: distal and proximal marker) was deployed from the P1 portion of the right posterior cerebral artery to the V4 portion of the left vertebral artery. h Brain MRI on day 6 showing left-sided pontine infarction on DWI