PMC4533407_01
A, B: Diffusion weighted image on admission (18 h after the second injury) revealed acute infarction in the right cerebellar hemisphere. C: Fluid-attenuated inversion recovery image on admission demonstrated the infarction as a slightly high intensity lesion. D: Sagittal T1-weighted image on admission revealed a hypotense lesion just below the tentorium (arrow-heads), indicating that infarction occurred in the territory of the right superior cerebellar artery.
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F1
Magnetic resonance imaging (MRI) revealed acute infarction in the right cerebellar hemisphere (Fig. 1A-D), and magnetic resonance angiography (MRA) revealed stenosis of the right superior cerebellar artery (SCA) without vertebral artery (VA) dissection (Fig. 2A).
A: Magnetic resonance angiography (MRA) on admission revealed stenosis of the right superior cerebellar artery (SCA) (arrows) without vertebral artery dissection. B: Follow-up MRA 5 days after the second injury revealed improved stenosis of the right SCA (arrow). C: Follow-up MRA 3 months after the second injury revealed no abnormality.
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F2
Dizziness gradually improved, and MRA 3 days after the second injury revealed improved stenosis of the right SCA (Fig. 2B). Follow-up MRI and MRA 3 months after the second injury revealed old infarction in the right cerebellar hemisphere without vascular abnormality (Fig. 2C).
A, B: Vertebral angiograms 7 days after the second injury, lateral view, demonstrated no abnormality such as vertebral artery dissection (A: right side, B: left side). C: Right vertebral angiogram, anteroposterior view, demonstrated no abnormality of the right superior cerebellar artery (arrow).
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F3
Vertebral angiography 7 days after the second injury demonstrated no abnormalities (Fig. 3A-C).