![]() Can the site of compression explain the symptoms? Acta Neurochir (Wien) 1999 141:495-501.īrookes GB. Neurovascular compression syndrome of the eighth cranial nerve. Ryu H, Yamamoto S, Sugiyama K, Nishizawa S, Nozue M. Neurovascular cross-compression in patients with hyperactive dysfunction symptoms of the eighth cranial nerve. Keywords: Tinnitus Vestibulocochlear nerve Hearing loss Magnetic resonance imaging Compression of VIIIth cranial nerve by AICA loops at a cerebellopontine angle and impaired blood flow through the vessel may be the pathophysiology of tinnitus. Ears with thinner AICA loop had a higher rate of tinnitus than those with thicker AICA loop.ĬONCLUSIONS The type I, II and thinner AICA loop was significantly correlated with tinnitus. There was no association between the type of tinnitus and hearing loss. ![]() There was no association between the type of AICA loop and subtype of tinnitus (pulsatile, nonpulsatile). RESULTS Ears with type I, II AICA loops showed significantly higher rates of tinnitus than those with type III. The AICA loops were classified into two groups based on thickness, thinner than adjacent facial nerve and thicker than the facial nerve. The second scoring system was used to measure the thickness of the AICA loop. The first system was Chavda classification based on the anatomical location of the AICA loop. We evaluated the position and thickness of the AICA vascular loop in 3D-FIESTA MRI using two scoring systems. ![]() Otologic symptoms, which was measured based on the results of a pure tone audiometry, were reviewed. ![]() MATERIALS AND METHODS 74 patients with tinnitus and 82 asymptomatic controls were included in this study. The objective of this study was to assess the correlation between anatomical type and the thickness of the anterior inferior cerebellar artery (AICA) loop with tinnitus, using 3D-fast imaging employing steady state acquisition magnetic resonance image (MRI). AND OBJECTIVES Tinnitus is a common disorder, but the etiology of this disorder remains unknown. Han Seok Yoo, Dong Wook Lee, Hyun Jung Min, Seung Hwan Lee, Chul Won Parkĭepartment of Otolaryngology-Head and Neck Surgery, College of Medicine, Hanyang University, Guri, Korea. The Association of Anterior Inferior Cerebellar Artery in Internal Auditory Canal with Tinnitus and Hearing Loss. Auditory and Vestibular Disorders, Auditory Neuroscience ![]()
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