Heavily T2-weighted image of a cerebellar infarction due to thrombosed occlusion of an anterior inferior cerebellar artery aneurysm: a case report

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  • Heavily T2強調画像で前下小脳動脈瘤の血栓化閉塞による脳梗塞を診断できた1例

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Abstract

<p>A 68-year-old female visited a local hospital complaining of right hearing loss and dizziness. Head MRI revealed acute ischemic infarction at the right anterior inferior cerebellar artery (AICA) territory. The patient was diagnosed with atherosclerotic cerebral infarction, and antithrombotic therapy was initiated. However, one month later, a high-intensity mass lesion was demonstrated at the right side of lower basilar artery on MRA. Right AICA was not shown on DSA and basi-parallel anatomical scanning (BPAS) did not demonstrate connectivity between AICA and the mass lesion. However, thin-sliced heavily T2 weighted image (heavily T2WI) proved connection between AICA and the mass lesion. Therefore, we diagnosed the cause of the infarction as the occlusion of AICA due to the thrombosed aneurysm; if the thrombosed AICA aneurysm is suspected, thin-sliced heavily T2WI is useful for diagnosis.</p>

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