The purpose of this study was to compare two MR sequences for their ability to delineate internal auditory canal tumors. Minim Invasive Neurosurg 47:306–311Ītkinson WJ (1949) The anterior inferior cerebellar artery its variations, pontine distribution, and significance in the surgery of cerebello-pontine angle tumours.BACKGROUND AND PURPOSE: Although contrast-enhanced T1-weighted MR imaging is the standard of reference for diagnosing tumor in the cerebellopontine angle, high-resolution T2-weighted imaging may show more details of the seventh and eighth cranial nerve branches, resulting in more accurate tumor volume measurements. Yurtseven T, Savas R, Kocak A et al (2004) Relationship between anterior inferior cerebellar artery and facial-vestibulocochlear nerve complex: an anatomical and magnetic resonance images correlation study. Weissman JL, Hirsch BE (2000) Imaging of tinnitus: a review.
Naraghi R, Tanrıkulu L, Weber RT et al (2007) Classification of neurovascular compression in typical hemifacial spasm: three-dimensional visualization of the facial and the vestibulocochlear nerves. What are the most reliable diagnostic signs? Acta Neurochir 140:1279–1286 Ryu H, Yamamoto S, Sugiyama K et al (1998) Neurovascular compression syndrome of the eighth cranial nerve. Can the site of compression explain the symptoms? Acta Neurochir 141:495–501 Ryu H, Yamamoto S, Sugiyama K et al (1999) Neurovascular compression syndrome of the eighth cranial nerve. Parnes LS, Shimotakohara SG, Pelz D et al (1990) Vascular relationships of the vestibulocochlear nerve on Magnetic Resonance Imaging. Herzog JA, Bailey S, Meyer J (1997) Vascular loop of the internal auditory canal: a diagnostic dilemma. Sirikci A, Bayazit Y, Ozer E et al (2005) Magnetic resonance imaging based classification of anatomic relationship between the cochleovestibular nerve and anterior inferior cerebellar artery in patients with non-specific neuro-otologic symptoms. Tanriover N, Rhoton AL (2005) The anteroinferior cerebellar artery embedded in the subarcuate fossa: a rare anomaly and its clinical significance. Gultekin S, Celik H, Akpek S et al (2008) Vascular loops at the cerebellopontine angle: is there a correlation with tinnitus? AJNR Am J Neuroradiol 29:1746–1749 Gorrie A, Warren FM, Garza AN et al (2010) Is there a correlation between vascular loops in the cerebellopontine angle and unexplained unilateral hearing loss. Suzuki H, Maki H, Maeda M et al (2005) Visualization of the intracisternal angioarchitecture at the posterior fossa by use of image fusion. Raghavan P, Mukherjee S, Phillips CD (2009) Imaging of the facial nerve. Swartz JD (2008) Pathology of the vestibulocochlear nerve. The cisternal and canalicular segments of CNs VII and VIII and adjacent vascular variations are well identified using 3D-FIESTA, especially by determining the relationship of the AICA variations between CNs. No statistically significant differences were found between the presence and absence of the AICA loop and/or vascular contact for the clinical symptoms of patients ( P > 0.05). The Chi-squared test was used for statistical analysis. Magnetic resonance images thus obtained were evaluated with special regard to the presence of vascular contact to the CNs VII and VIII, as well as the presence of the vascular variations of the anterior inferior cerebellar artery (AICA) causing the compression of CNs. In addition to conventional MR sequences, a 3D-FIESTA MR imaging was acquired.
One hundred and eighty-seven patients (374 temporal bones) were examined on a 1.5-T MRI. This study aims to investigate the vascular variations and compression of the cranial nerves (CNs) VII and VIII at the cerebellopontine angle in patients with neuro-otologic symptoms using 3D-fast imaging employing steady-state acquisition (FIESTA) MR imaging. Magnetic resonance imaging (MRI) of the internal acoustic canal is the standard diagnostic tool for a wide range of indications in patients.
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