Document Detail

Demonstration of periventricular brain motion during a Valsalva maneuver: description of technique, evaluation in healthy volunteers and first results in hydrocephalic patients.
MedLine Citation:
PMID:  11702134     Owner:  NLM     Status:  MEDLINE    
There has long been a need for a sensitive and predictive parameter in the evaluation of hydrocephalic patients. Our goal was to assess ventricular response to a Valsalva maneuver as a potential method of studying patients with hydrocephalus. Twenty-five healthy volunteers and 5 patients with communicating hydrocephalus were examined with an axial and 10 volunteers with an axial, coronal and sagittal true fast imaging steady precession (FISP) sequence in a 1.5-T clinical MR scanner (TR 4.8 ms, TE 2.3 ms, flip angle 70 degrees, slice thickness 5 mm, field of view 330 mm, 3 slices). Images were assessed both as dynamic images in cine mode and by measuring lateral ventricular size over time. All volunteers showed marked periventricular brain motion. The lateral ventricular area was reduced under the Valsalva maneuver by an average of 18% (SD 7) in healthy volunteers, while remaining practically constant in the patient group. Differences were statistically significant with a p<0.0001. The Valsalva maneuver leads to periventricular brain motion, which can be consistently detected by a true FISP sequence. Our method proved to be an easy and reliable method with a capacity to identify hydrocephalic patients.
B B Ertl-Wagner; A Lienemann; W Reith; M F Reiser
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  European radiology     Volume:  11     ISSN:  0938-7994     ISO Abbreviation:  Eur Radiol     Publication Date:  2001  
Date Detail:
Created Date:  2001-11-09     Completed Date:  2002-07-15     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  9114774     Medline TA:  Eur Radiol     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  1998-2003     Citation Subset:  IM    
Institute of Clinical Radiology, Klinikum Grosshadern, University of Munich, Marchioninistrasse 15, 81377 Munich, Germany.
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MeSH Terms
Cerebral Ventricles / pathology,  physiopathology*
Hydrocephalus / physiopathology*
Magnetic Resonance Imaging / methods
Middle Aged
Valsalva Maneuver*

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