PMC10370629_01
Head MRI and MRA just before thrombectomy. Diffusion-weighted images show high intensity of the right basal ganglia (A), and MRA shows occlusion of the M1 segment of the MCA (B). MCA: middle cerebral artery
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F1
Diffusion-weighted images (DWI) showed hyperintensity in the basal ganglia (Fig. 1A and 1B).
Lateral angiographic view of the right carotid artery before (A) and after (B) thrombectomy. The marginal tentorial artery is shown before thrombectomy (black arrows) (A), but the flow in the same arterial phase become invisible distally after thrombectomy (white arrow) (B).
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F2
Looking backward, the marginal tentorial artery arose prominently from the right ICA (Fig. 2A). The flow of this artery was slower in the final angiography view (Fig. 2B).
Head MRI on the day after thrombectomy (A-D). Diffusion-weighted images show high intensity of the basal ganglia and frontal lobe, with an intact oculomotor nucleus (A and B). T2*WI shows no hematoma and nothing compressing the oculomotor nerve (C). MRA shows no findings indicating an arteriovenous fistula, including hyperintensity in the cavernous or intracavernous sinus and in the superior ophthalmic vein (D). T2*WI: T2* weighted image
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F3
MRI showed infarctions of the basal ganglia and the frontal lobe, no bleeding, and no carotid-cavernous fistula (Fig. 3A and 3B).