Tumor growth rate: A new prognostic indicator of hearing preservation in vestibular schwannoma surgery. Lovato A, García Ibañez E, García Ibañez L, de Filippis C. Natural History of Sporadic Vestibular Schwannoma: A Volumetric Study of Tumor Growth. Incidence of Vestibular Schwannoma over the Past Half-Century: A Population-Based Study of Olmsted County, Minnesota. The prevalence of “incidental” acoustic neuroma. Lin D, Hegarty JL, Fischbein NJ, Jackler RK. The molecular biology of vestibular schwannomas and its association with hearing loss: a review. Celis-Aguilar E, Lassaletta L, Torres-Martín M, et al. Systematic review of magnetic resonance imaging for diagnosis of Meniere disease. Imaging of endolymphatic and perilymphatic fluid at 3T after intratympanic administration of gadolinium-diethylene-triamine pentaacetic acid. Naganawa S, Sugiura M, Kawamura M, Fukatsu H, Sone M, Nakashima T. State of the art: 3T imaging of the membranous labyrinth. Lane JI, Witte RJ, Bolster B, Bernstein MA, Johnson K, Morris J. Anatomy and inflammatory and neoplastic processes. Imaging review of the temporal bone: part I. Review of Temporal Bone Microanatomy: Aqueducts, Canals, Clefts and Nerves. Magnetic resonance imaging of the internal auditory canal. Identification of the nervus intermedius using 3T MR imaging. Burmeister HP, Baltzer PA, Dietzel M, et al. Improved Assessment of Middle Ear Recurrent Cholesteatomas Using a Fusion of Conventional CT and Non-EPI-DWI MRI. Detection of postoperative residual cholesteatoma with non-echo-planar diffusion-weighted magnetic resonance imaging. De Foer B, Vercruysse JP, Bernaerts A, et al. A Systematic Review of Non-Echo Planar Diffusion-Weighted Magnetic Resonance Imaging for Detection of Primary and Postoperative Cholesteatoma. van Egmond SL, Stegeman I, Grolman W, Aarts MCJ. Symptomatic Lipoma of the Internal Auditory Canal: CT and MRI Findings. Diagnostic Dilemma: Cerebellopontine Angle Lipoma Versus Dermoid Cyst. Magnetic resonance cisternography: comparison between 3-dimensional driven equilibrium with sensitivity encoding and 3-dimensional balanced fast-field echo sequences with sensitivity encoding. MR cisternography of the cerebellopontine angle: comparison of three-dimensional fast asymmetrical spin-echo and three-dimensional constructive interference in the steady-state sequences. Naganawa S, Koshikawa T, Fukatsu H, Ishigaki T, Fukuta T. MR imaging of the internal auditory canal and inner ear at 3T: comparison between 3D driven equilibrium and 3D balanced fast field echo sequences. Comparison of three-dimensional fast spin echo and gradient echo sequences for high-resolution temporal bone imaging. Ex vivo and in vivo imaging of the inner ear at 7 Tesla MRI. van Egmond SL, Visser F, Pameijer FA, Grolman W. Visualization of human inner ear anatomy with high-resolution MR imaging at 7T: initial clinical assessment. van der Jagt MA, Brink WM, Versluis MJ, et al. 3-T imaging of the cochlear nerve and labyrinth in cochlear-implant candidates: 3D fast recovery fast spin-echo versus 3D constructive interference in the steady state techniques. Lane JI, Ward H, Witte RJ, Bernstein MA, Driscoll CLW. In addition, the features at pre- and postprocedural MRI will be discussed to help ensure that diagnostic radiologists may be of greatest use to the ordering physicians. The purpose of this review is to provide an overview of the most useful MRI sequences for internal auditory canal and labyrinthine imaging, review the relevant anatomy, and discuss the expected appearances of the most commonly encountered pathologic entities. Nevertheless, despite the widespread use of MRI for these purposes, many radiologists remain unfamiliar with the complex anatomy and expected imaging findings with such examinations. It is also extensively used in pre- and postoperative evaluations, particularly in patients with vestibular schwannomas and candidates for cochlear implantation. It is used to evaluate normal anatomic structures, evaluate for vestibular schwannomas, assess for inflammatory and/or infectious processes, and detect residual and/or recurrent cholesteatoma. MRI is firmly established as an essential modality in the imaging of the temporal bone and lateral skull base.
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