Eduardo Portela De Oliveira MD, Presenter: Nothing to Disclose

Valdeci Helio Floriano MD, PhD, Abstract Co-Author: Nothing to Disclose

Ulysses Santos Torres MD, Abstract Co-Author: Nothing to Disclose

Antonio Ronaldo Spotti, Abstract Co-Author: Nothing to Disclose

Antonio Soares Souza MD, Abstract Co-Author: Nothing to Disclose

Waldir Antonio Tognola, Abstract Co-Author: Nothing to Disclose

Jose Roberto Lopes Ferraz-Filho, Abstract Co-Author: Nothing to Disclose

Although conventional techniques of structural MRI with gadolinium-based contrast agents have a fundamental and well-established role in the diagnosis, evaluation and follow-up of brain lesions, dynamic susceptibility contrast-enhanced perfusion MR imaging (DSC-MRI) is a very important tool for characterizing the microcirculation of lesions. The purposes of this education exhibit are: 1) To review the clinical usefulness of DSC-MRI for the assessment of focal brain lesions, also discussing the implications of such method for the differentiation between infectious and neoplastic lesions. 2) To illustrate the main imaging findings of infectious lesions and to present cases mimicking neoplasms on conventional MRI. Radiologists should know the principles underlying the application of this complementary non-invasive tool and use it to improve the characterization of focal brain lesions, ultimately narrowing the differential diagnoses and avoiding unnecessary biopsies.

This exhibit will use a case-based approach to demonstrate characteristic MRI findings with emphasis in DSC-MRI in a range of infectious focal brain lesions. Representative cases will include pyogenic abscesses, toxoplasmosis, tuberculosis, cysticercosis, fungal infections, among others.

http://abstract.rsna.org/uploads/2014/14016478/14016478_uf7p.pdf

De Oliveira, E, Floriano, V, Torres, U, Spotti, A, Souza, A, Tognola, W, Ferraz-Filho, J, Dynamic Susceptibility Contrast-Enhanced Perfusion MR Imaging of Infectious Focal Brain Lesions: A Pictorial Review.  Radiological Society of North America 2014 Scientific Assembly and Annual Meeting, - ,Chicago IL. http://archive.rsna.org/2014/14016478.html