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Abstract

MR Evaluation of Hydrocephalus

Taher El Gammal, Marshall B. Allen, Betty Sue Brooks and Edward K. Mark
American Journal of Neuroradiology July 1987, 8 (4) 591-597;
Taher El Gammal
1Department of Radiology, Section of Neuroradiology, Medical College of Georgia, 1120 15th Street, Augusta, GA 30912. Address reprint requests to T. El Gammal
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Marshall B. Allen Jr.
2Department of Surgery, Section of Neurosurgery, Medical College of Georgia, Augusta, GA 30912
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Betty Sue Brooks
1Department of Radiology, Section of Neuroradiology, Medical College of Georgia, 1120 15th Street, Augusta, GA 30912. Address reprint requests to T. El Gammal
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Edward K. Mark
2Department of Surgery, Section of Neurosurgery, Medical College of Georgia, Augusta, GA 30912
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Abstract

An analysis of sagittal T1-weighted MR studies was performed in 23 patients with hydrocephalus, 58 patients with atrophy, and 100 normal patients. The average millopontine distance was 1.15 cm for the normal group, 1.2 cm for patients with atrophy, and 7.5 mm for patients with hydrocephalus. A reduction of the mamillopontine distance below 1.0 cm was found in 22 patients with hydrocephalus, 5 patients with atrophy, and 15 normal patients. Dilatation of the anterior third ventricle was noted in 21 patients in the hydrocephalus group and in none of the patients in the atrophy and normal groups. The average thickness of the corpus callosum at the level of the foramen of Monro was 6 mm in normal subjects and was reduced below 6 mm in 16 of the hydrocephalus patients. Smooth elevation of the corpus callosum was noted in 20 hydrocephalus patients, in 2 patients with atrophy, and in none of the normal patients. MR improves the accuracy of diagnosis in patients with hydrocephalus both because of its ability to show small obstructing lesions that are not depicted by CT and because the mass effect of the distended supratentorial ventricles produces anatomic changes that are delineated with precision by MR.

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American Journal of Neuroradiology
Vol. 8, Issue 4
1 Jul 1987
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Taher El Gammal, Marshall B. Allen, Betty Sue Brooks, Edward K. Mark
MR Evaluation of Hydrocephalus
American Journal of Neuroradiology Jul 1987, 8 (4) 591-597;

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MR Evaluation of Hydrocephalus
Taher El Gammal, Marshall B. Allen, Betty Sue Brooks, Edward K. Mark
American Journal of Neuroradiology Jul 1987, 8 (4) 591-597;
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