Anterior inferior cerebellar artery vascular loop - type II
Right sudden sensorineural hearing loss and tinnitus
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Axial 3D-FIESTA MRI demonstrating vascular loop of anterior inferior cerebellar artery, proximal to the right IAC that extends to less than 50% of the canal.
The AICA is a branch of basilar artery that courses through the CPA posterolaterally to supply the anterior to middle parts of the cerebellum and inferolateral pons. Labyrinthine artery is a branch of the AICA.
Chavda classification of AICA loop, classified AICA loop occupying no more than 50% of IAC as type II.