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AJNR - American Journal of Neuroradiology

Publication Preview: Published February 26, 2009

American Journal of Neuroradiology 2009;30:1123.

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American Journal of Neuroradiology
DOI 10.3174/ajnr.A1473

HEAD & NECK

Apparent Diffusion Coefficient Values of Middle Ear Cholesteatoma Differ from Abscess and Cholesteatoma Admixed Infection

S. Thiriat, S. Riehm, S. Kremer, E. Martin and F. Veillon

From the Department of Radiology (S.T.), Hautepierre Strasbourg, Strasbourg, France; and Departments of Radiology (S.R., S.K., F.W.) and Otolaryngology (E.M.), Hautepierre Strasbourg, Hôpital de Hautepierre, Cedex, France.

Please address correspondence to Sébastien Thiriat, CHU, Radiology, Moliere St, Strasbourg, 67098, France; e-mail: sebastienthiriat{at}voila.fr

SUMMARY: A retrospective study was conducted on a cohort of 15 patients who underwent surgery because cholesteatoma or abscess was suspected. All patients had MR imaging prior to surgery with diffusion-weighted images (DWI) from which the apparent diffusion coefficient (ADC) value was calculated. Using this technique, we were able to determine 3 distinct ADC value ranges corresponding to the 3 groups of lesions found at surgery (pure cholesteatoma, cholesteatoma with infection, and abscess or infection). This needs to be confirmed by further studies with a wider range of patients.