American Journal of Neuroradiology 25:295-297, February 2004
© 2004 American Society of Neuroradiology
Technical Note
BRAIN
Noninvasive MR Cisternography with Fluid-Attenuated Inversion Recovery and 100% Supplemental O2 in the Evaluation of Neurocysticercosis
a Santa Casa de Misericórdia de São Paolo, Section of Radiology, São Paulo, Brazil
b Santa Casa de Misericórdia de São Paolo, Section of Neurology, São Paulo, Brazil
c Vanderbilt University School of Medicine, Department of Radiology and Radiological Sciences, Nashville, TN
Address reprint requests to Flávio Braga, Fleury-Centro de Medicina Diagnóstica, Rua Cincinato Braga, 232, Paraíso, São Paulo, SP, 01333, Brazil
Summary: We describe an MR protocol for the noninvasive imaging of the subarachnoid space, which we use in patients with suspected neurocysticercosis in this space. It consists of a fluid-attenuated inversion recovery sequence performed 5 minutes after the continuous inhalation of 100% O2 with a resultant increase in the signal intensity of the CSF that leads to a greater conspicuity of cyst walls in relation to the cortex and the extraventricular CSF.