Influence of head posture and PC-MRI arterial flow on ASL CBF measurements in children
Olivier Baldent 1 , Catherine Gondry 2 , Cyrille Capel 1 , Valriane Michel 1 , and Roger Bouzerar 1
Image processing, University hospital,
University hospital, Amiens, France
Arterial Spin labeling is a useful tool to measure local
microcirculation hemodynamics. Our goal is to evaluate
the influence of head posture and PC-MRI arterial inflow
on ASL CBF measurements. Cine-PC and Pulsed-continuous
ASL sequences were performed in 20 pediatric subjects.
Total arterial inflow (Qa), mean CBF at midbrain level,
cerebral volume index (CVI), CBFv=CBFxCVI and head
inclination were calculated. CBFv was correlated to
intracranial arterial inflow Qa. CBFv and Qa were
correlated to the subject's age. CBFv/Qa was negatively
correlated to the head inclination. Knowledge of global
arterial inflow could improve the accuracy of ASL data.
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