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Fast spin echo MRI in otology

Published online by Cambridge University Press:  29 June 2007

Peter D. Phelps
Peter D. Phelps*
Affiliation:
Departments of Radiology, Royal National Throat, Nose and Ear Hospital, Gray‘s Inn Road, London, and St Mary‘s Hospital, Praed Street, Paddington, London W2 1NY.
*
Dr Peter D. Phelps, M.D., F.R.C.S., F.R.C.R., Consultant Radiologist, Royal National Throat, Nose and Ear Hospital, Gray's Inn Road, London WC1X 8DA.
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Abstract

Magnetic resonance imaging (MRI) using a fast spin echo protocol (FSE) gives greatly improved spatial resolution for the inner ear and its central connections. Excellent contrast resolution between bone, neural tissue and intracranial fluids is obtained on the heavily T2 weighted images. The contents of the internal auditory meatus (IAM) are shown more clearly than on Tl weighted images, even with gadolinium enhancement. Use of the technique for congenital, vascular, granulomatous and obliterative lesions of the inner ear is described. The cochlear and vestibular nerves can be seen side by side in the majority of cases thereby excluding the presence of even an intrameatal acoustic neuroma. This means that FSE can be used as a first line investigation to exclude small vestibular schwannomas without the need for gadolinium. Gadoliniumenhanced Tl weighted sequences are still necessary for confirmation of some tumours or for inflammatory lesions.

Keywords

Magnetic resonance imagingVestibular schwannomaCochlear implant
Type
Main Articles
Information
The Journal of Laryngology & Otology , Volume 108 , Issue 5 , May 1994 , pp. 383 - 394
Copyright
Copyright © JLO (1984) Limited 1994

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References

Applebaum, E. L., Valvassori, G. E. (1983) Auditory and vestibular system in patients with vascular loops in the internal auditory canal. Annals of Otology, Rhinology and Laryngology 112: 63–70.Google Scholar
Atlas, S. W., Hackney, D. B., Yousem, D. M., Listerud, J. (1991) Fast spin-echo MR imaging: blinded comparison with conventional spin-echo imaging for the detection of focal brain lesions. Radiology 181(P): 165 (Abstract).Google Scholar
Barbara, M., Saliola, S., Filipo, R. (1993) False-positive MRI in a patient with otoneurological pathology. Journal of Laryngology and Otology 107: 465–467.Google Scholar
Brogan, M., Chakeres, D. W., Schmalbrock, P. (1991) High-resolution 3DFT MR imaging of the endolymphatic duct and soft tissues of the otic capsule. American Journal of Neuroradiology 12:1–11.Google Scholar
Casselman, J. W., Kuhweide, R., Ampe, W., Meeus, L., Steyaert, L. (1993 a) Pathology of the membranous labyrinth: comparison of T, and T2 weighted and gadolinium-enhanced spin-echo and 3DFT -CISS imaging. American Journal of Neuroradiology 14: 59–69.Google ScholarPubMed
Casselman, J. W., Kuhweide, R., Deimling, M., Ampe, W., Dehaene, I., Meeus, L. (1993 b) Constructive interference in steady state-3DFT MR imaging of the inner ear and cerebellopontine angle. American Journal of Neuroradiology 14: 47–57.Google ScholarPubMed
McCabe, B. R., Harker, L. A. (1983) Vascular loop as a cause of vertigo. Annals of Otology, Rhinology and Laryngology 92: 542–543.Google Scholar
Phelps, P. D., Reardon, W., Pembrey, M., Bellman, S., Luxon, L. (1991) X-linked deafness, stapes gushers and a distinctive defect of the inner ear. Neuroradiology 33: 326–330.Google Scholar
Phelps, P. D., Wright, A. (1990) Imaging cholesteatoma. Clinical Radiology 41: 156–162.CrossRefGoogle ScholarPubMed
Valvassori, G. E., Dobben, G. D. (1985) CT densitometry of the cochlear capsule in otosclerosis. American Journal of Neuroradiology 6: 661–667.Google Scholar
Yuen Heun, Y., Miyamoto, R. T., Yuen Marc, E. (1991) Medical imaging in cochlear implant candidates. American Journal of Otology 12: 11–17.Google Scholar
Zoarski, G. H., Mackey, J. K., Anzai, Y., Hanafee, W. N., Melki, P. S., Mulkern, R. V., Jolesz, F. A., Lufkin, R. B. (1993) Head and neck: initial clinical experience with fast spin-echo imaging. Radiology 188: 323–327.CrossRefGoogle Scholar