![]() ![]() The results of our study suggest that this classification is simple and very useful for the elucidation of the mechanism of auditory symptoms and deciding the therapeutic strategies.ģD-drive-T2WI Anterior inferior cerebellar artery (AICA) Posterior inferior cerebellar artery (PICA) Vestibulocochlear (VIIIth) cranial nerve Nerve–vascular compression syndrome Anatomical topics Head and neck MR imaging.Ĭopyright © 2013 Elsevier Inc. There was statistically significant association between types 1A and 2A (P<.01) regarding the existence of any auditory 3 symptoms. Alexander Evins from Weill Cornell Medicine Neurosurgical Innovations Laborator. The AICA/PICA branching and shape patterns relative to the CPA and IAC were classified into four major types: type 1A, nonloop AICA/PICA in the CPA cistern type 1 B, nonloop AICA/PICA (internal auditory artery) entering the IAC type 2A, loop-type AICA/PICA in the CPA cistern and type 2B, loop-type AICA/PICA entering the IAC. Review the course of the posterior inferior cerebellar artery (PICA) with Dr. Contact with the vestibulocochlear nerve was seen in 31.7% subjects (n=19, 27 sides). Thin-slice T2WI drive MRI revealed several variations of the AICA/PICA coursing, such as a loop formation (n=30, 48 sides) or the IAC extension (n=19, 30 sides). Five subjects (3 men, 2 women) without any auditory symptoms were also examined. The Wallenberg Syndrome (WS) is an uncommon form of stroke that occurs due to occlusion of the posterior inferior cerebellar artery (PICA) or one of its. Fluctuating symptoms in the setting of a patent basilar artery was described by Saposnik and colleagues as the pontine warning syndrome and characterized by episodes of motor or sensory dysfunction, dysarthria, or ophthalmoplegia due to basilar branch artery disease leading to ventral pontine infarctions (Figure (Figure4 4 A). Thirty-three men and 27 women aged 8-85 years old with sensory hearing loss or vertigo, and/or tinnitus were evaluated by thin-slice (0.75 mm) T2-weighted MRI. The purpose was to demonstrate the courses and configurations of the anterior inferior cerebellar artery (AICA) or posterior inferior cerebellar artery (PICA) branch including the internal auditory artery in the CPA cistern and evaluate the relationship between the facial-vestibulocochlear (VIIth-VIIIth) nerves and AICA/PICA on high-resolution, thin-slice, three-dimensional T2-weighted MRI using driven equilibrium pulse. Doctors also refer to Wallenberg syndrome as lateral medullary syndrome, posterior inferior cerebellar artery (PICA) syndrome, or vertebral artery syndrome. With the technical advance of magnetic resonance imaging (MRI), we have been able to observe not only the small cranial nerves arising from the brain stem but also the branches of vertebrobasilar artery in the cerebellopontine angle (CPA) cistern. ![]()
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