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Radiology, Vol 157, 373-377, Copyright © 1985 by Radiological Society of North America

ARTICLES

MR cisternography and myelography with Gd-DTPA in monkeys

G Di Chiro, RH Knop, ME Girton, AJ Dwyer, JL Doppman, NJ Patronas, OA Gansow, MW Brechbiel and RA Brooks

To enhance the contrast between cerebrospinal fluid (CSF), brain, spinal cord, and surrounding meninges and bone on magnetic resonance (MR) images, as well as to study CSF flow, gadolinium-DTPA was injected in the subarachnoid space of eight monkeys. Six doses of progressively higher concentrations (from .125 mmol to 250 mmol) were injected every 30-40 minutes. Images of head and spine were obtained at .26 T or .5 T in sagittal and axial planes, using both spin-echo and inversion- recovery sequences in 13 imaging experiments. Marked, consistent changes of signal intensity in the CSF cavities were observed following the injections. These changes were dose related and occurred at different times in the areas close to the injection site versus those distant, a disparity that obviously was related to CSF flow. Gd-DTPA cisternography and myelography may be valuable in MR imaging of central nervous system disease, such as tumors adjacent to the CSF cavities, abnormal CSF collections (e.g., arachnoidal cysts), CSF rhinorrhea and otorrhea, syringohydromyelia, and studies of hydrocephalus and CSF flow dynamics.


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