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AJNR - American Journal of Neuroradiology

Published ahead of print on July 24, 2008
doi: 10.3174/ajnr.A1212

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Vascular Loops at the Cerebellopontine Angle: Is There a Correlation with Tinnitus?

S. Gultekin^a, H. Celik^a, S. Akpek^a, Y. Oner^a, T. Gumus^a and N. Tokgoz^a

^a From the Department of Radiology, Gazi University School of Medicine, Besevler-Ankara, Turkey

View larger version (65K): [in this window] [in a new window]   Fig 1. Examples of types of AICA loops and eighth CN-AICA relationships. Axial 3D-FIESTA MR images through the eighth CN show the following: AICA loop within the IAC (arrow) but not >50% of its depth (Type II) (A); vascular loop extending into >50% of the IAC (arrow) (Type III) (B); and contact of AICA (arrow) with the eighth CN, not resulting (C) and resulting (D) in angulation on the eighth CN (arrow) in the CPA.