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MR Imaging of Middle Ear Cholesteatomas

MR Imaging of Middle Ear Cholesteatomas We prospectively evaluated MR images of 14 patients who had chronic otitis media and who were suspected of having cholesteatomas on otologic examination and/or on high resolution CT. Cholesteatomas were verified in the middle ear and/or mastoid at surgery in nine patients. Cholesteatomas appeared isointense relative to gray matter on T1-weighted spin echo MR images (T1WI) and hyperintense on T2-weighted spin echo MR images (T2WI) in eight patients. Two cholesterol granulomas appeared hyperintense on both T1WI and T2WI. In three patients with chronic otitis media the associated mixed granulation tissue and fluid collection was revealed as nonspecific, heterogeneous signal intensity in two cases. In the third case the signal intensity http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Computer Assisted Tomography Wolters Kluwer Health

MR Imaging of Middle Ear Cholesteatomas

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ISSN
0363-8715
eISSN
1532-3145

Abstract

We prospectively evaluated MR images of 14 patients who had chronic otitis media and who were suspected of having cholesteatomas on otologic examination and/or on high resolution CT. Cholesteatomas were verified in the middle ear and/or mastoid at surgery in nine patients. Cholesteatomas appeared isointense relative to gray matter on T1-weighted spin echo MR images (T1WI) and hyperintense on T2-weighted spin echo MR images (T2WI) in eight patients. Two cholesterol granulomas appeared hyperintense on both T1WI and T2WI. In three patients with chronic otitis media the associated mixed granulation tissue and fluid collection was revealed as nonspecific, heterogeneous signal intensity in two cases. In the third case the signal intensity

Journal

Journal of Computer Assisted Tomography – Wolters Kluwer Health

Published: Nov 1, 1991

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