Roger R. Selouan MD, Presenter: Nothing to Disclose

Majdi M. Radaideh MD, Abstract Co-Author: Nothing to Disclose

Ramin M. Naeini MD, Abstract Co-Author: Nothing to Disclose

Vinodh Ashok Kumar MD, Abstract Co-Author: Nothing to Disclose

Lawrence E. Ginsberg MD, Abstract Co-Author: Nothing to Disclose

Ashok J. Kumar MD, Abstract Co-Author: Nothing to Disclose

The purpose of this exhibit is to review the CT and MRI findings of acute rhinosinusitis. We will focus on the multi sequence MRI findings in acute rhinosinusitis especially the diffusion signal of the air-fluid levels and its potential value in differentiating acute viral from acute bacterial purulent rhinosinusitis which affects the management.

Classification and management of Rhinosinusitis. Review of Imaging Findings: - Computed Tomography - MRI with special attention to diffusion weighted imaging. Sample Cases. Possible clinical applications and summary.

Sinus CT findings cannot differentiate acute noninfectious and acute viral from acute bacterial rhinosinusitis. The presence of diffusion restriction in the sinus fluid when there is an air-fluid level along with acutely edematous and hyperemic mucosa is highly suggestive of acute bacterial purulent sinusitis. These patients may benefit form early antibiotic treatment to prevent future complications.

Selouan, R, Radaideh, M, Naeini, R, Kumar, V, Ginsberg, L, Kumar, A, Diffusion-weighted MRI Imaging of Acute Rhinosinusitis: Can DWI Differentiate Acute Viral from Acute Purulent Bacterial Rhinosinusitis?.  Radiological Society of North America 2009 Scientific Assembly and Annual Meeting, November 29 - December 4, 2009 ,Chicago IL. http://archive.rsna.org/2009/8001474.html