| Cerebrospinal fluid flow waveforms: effect of altered cranial venous outflow. A phase-contrast MR flow imaging study. | |
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MedLine Citation:
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PMID: 9638668 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Our purpose was to assess the effect of alterations in the cranial venous outflow on cerebrospinal fluid (CSF) flow waveforms using phase-contrast MRI. Thirteen healthy subjects were assessed for CSF flow and cerebral vascular flow at the C2-3 level, both before and after jugular venous compression (JVC). The flow waveforms were assessed both as an aggregate, and after dividing subjects in two groups based on percent jugular venous flow (PJVF) i.e. jugular outflow expressed as percent of cerebral arterial inflow. Group 1:7 subjects with PJVF more than and including median (predominantly jugular outflow); Group 2:6 subjects with PJVF less than median (predominantly extra-jugular outflow). CSF waveforms: JVC produced rounding of contours and flattening of dicrotic waves, with the effect being greater in group 1 than group 2. In group 1, systolic upslopes of the waveforms increased. No significant aggregate amplitude changes were noted; amplitudes increased in group 1 (P = 0.001), and decreased in group 2 (P = 0.03). Temporal interval to the maximum CSF systolic flow significantly increased in group 1. Vascular flow: Arterial flow significantly decreased in group 1. Jugular flow significantly decreased in both groups. The results suggest that CSF flow waveforms are sensitive to alterations in the cranial venous outflow. Changes in group 1 are most likely because of an elevation in intracranial pressure. Analysis of CSF flow waveforms appears a promising noninvasive tool for assessment of cranial compartment. |
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Authors:
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R A Bhadelia; A R Bogdan; S M Wolpert |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Neuroradiology Volume: 40 ISSN: 0028-3940 ISO Abbreviation: Neuroradiology Publication Date: 1998 May |
Date Detail:
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Created Date: 1998-09-28 Completed Date: 1998-09-28 Revised Date: 2007-11-15 |
Medline Journal Info:
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Nlm Unique ID: 1302751 Medline TA: Neuroradiology Country: GERMANY |
Other Details:
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Languages: eng Pagination: 283-92 Citation Subset: IM |
Affiliation:
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Department of Radiology, New England Medical Center, Boston, MA 02111, USA. rafeeque.bhadelia@es.nemc.org |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Blood Flow Velocity / physiology Brain / blood supply* Cerebrospinal Fluid / physiology* Cerebrospinal Fluid Pressure / physiology Female Hemodynamics / physiology Humans Jugular Veins Magnetic Resonance Imaging, Cine / methods* Male Plethysmography Retrospective Studies Venous Pressure / physiology* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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