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Abstract

Fast multiphase MR imaging of aqueductal CSF flow: 2. Study in patients with hydrocephalus.

M Mascalchi, L Ciraolo, M Bucciolini, D Inzitari, G Arnetoli and G Dal Pozzo
American Journal of Neuroradiology May 1990, 11 (3) 597-603;
M Mascalchi
Department of Clinical Physiopathology, University of Florence, Italy.
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L Ciraolo
Department of Clinical Physiopathology, University of Florence, Italy.
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M Bucciolini
Department of Clinical Physiopathology, University of Florence, Italy.
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D Inzitari
Department of Clinical Physiopathology, University of Florence, Italy.
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G Arnetoli
Department of Clinical Physiopathology, University of Florence, Italy.
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G Dal Pozzo
Department of Clinical Physiopathology, University of Florence, Italy.
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Abstract

The signal intensity in the region corresponding to the cerebral aqueduct was evaluated in three patients with noncommunicating tension hydrocephalus (caused by aqueductal obstruction in two and type I Arnold-Chiari malformation in the other), seven patients with suspected normal-pressure hydrocephalus (three of whom subsequently underwent successful shunting), and 10 patients with ex vacuo (atrophic) hydrocephalus. A gradient-echo MR sequence, called fast multiphase imaging, was used. Serial images corresponding to different phases of the cardiac cycle were acquired. No flow-related enhancement was observed over the entire cardiac cycle in the patients with noncommunicating hydrocephalus. Patients with normal-pressure hydrocephalus showed a higher aqueductal CSF signal intensity, consistent with increased systolic flow rates, than patients with ex vacuo hydrocephalus. When comparing the above two groups of patients with a control group of healthy volunteers, significantly higher and lower values of the (mean) maximum aqueductal signal intensity were found in the normal-pressure hydrocephalus patients and the ex vacuo hydrocephalus patients, respectively. Fast multiphase MR evaluation of aqueductal CSF flow may help to differentiate patients with different types of hydrocephalus.

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American Journal of Neuroradiology
Vol. 11, Issue 3
1 May 1990
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Cite this article
M Mascalchi, L Ciraolo, M Bucciolini, D Inzitari, G Arnetoli, G Dal Pozzo
Fast multiphase MR imaging of aqueductal CSF flow: 2. Study in patients with hydrocephalus.
American Journal of Neuroradiology May 1990, 11 (3) 597-603;

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Fast multiphase MR imaging of aqueductal CSF flow: 2. Study in patients with hydrocephalus.
M Mascalchi, L Ciraolo, M Bucciolini, D Inzitari, G Arnetoli, G Dal Pozzo
American Journal of Neuroradiology May 1990, 11 (3) 597-603;
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