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AJNR - American Journal of Neuroradiology

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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

Flávio Braga^a, Antônio J. Rocha^a, Hélio R. Gomes^b, Guinel Hernandez Filho^a, Carlos J. Silva^a and Ricardo B. Fonseca^a,c

^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.

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