Relationship between cerebrospinal fluid and blood dynamics in healthy volunteers and patients with communicating hydrocephalus.
OBJECTIVE
Using magnetic resonance imaging (MRI), we investigated cerebral blood and cerebrospinal fluid (CSF) flows in patients with communicating hydrocephalus (CH) and in healthy volunteers to determine the contribution of CSF flow to brain pressure regulation in CH patients.


METHODS
Cine phase-contrast MRI data from 16 healthy volunteers and 12 patients with CH characterized by hyperdynamic aqueductal CSF flow were analyzed using in-house image-processing software that automatically measured flow curves. Amplitude and temporal CSF and blood flow parameters were compared in the 2 groups.


RESULTS
Jugular peak flow occurred significantly earlier (P < 0.01) in the CH patients than in the healthy volunteers. Cervical CSF oscillations were not significantly different between the 2 groups.


CONCLUSIONS
Venous vessel compression and/or changes in intracranial subarachnoid CSF flow produce an increase in ventricular CSF flush that compensates for vascular brain expansion in patients with CH.
Balédent
Olivier
O
Department of Imaging and Biophysics, UMR 6600 CNRS, Teaching Hospitals, Jules Verne University of Picardie, Amiens, France. baledent.olivier@chu-amiens.fr
Gondry-Jouet
Catherine
C
Meyer
Marc-Etienne
ME
De Marco
Giovanni
G
Le Gars
Daniel
D
Henry-Feugeas
Marie-Cécile
MC
Idy-Peretti
Ilana
I
D000293:Adolescent; D000328:Adult; D001783:Blood Flow Velocity / Q000502:physiology; D002555:Cerebrospinal Fluid / Q000502:physiology*; D015170:Cerebrospinal Fluid Pressure; D002560:Cerebrovascular Circulation / Q000502:physiology*; D005260:Female; D006801:Humans; D006849:Hydrocephalus / Q000503:physiopathology*; D007091:Image Processing, Computer-Assisted; D007427:Intracranial Pressure; D019028:Magnetic Resonance Imaging, Cine; D008297:Male; D013997:Time Factors