Abstract #0938

Effects of Free-Breathing on Cerebral Veins: study by Real-Time Phase-Contrast MRI

Pan LIU^1,2, Heimiri Monnier¹, Kimi Piedad Owashi¹, Serge Metanbou³, Cyrille Capel⁴, and Olivier Balédent^1,2

¹CHIMERE UR 7516, Jules Verne University of Picardy, Amiens, France, ²Medical Image Processing Department, Amiens Picardy University Hospital, Amiens, France, ³Radiology Department, Amiens Picardy University Hospital, Amiens, France, ⁴Neurosurgery Department, Amiens Picardy University Hospital, Amiens, France

Synopsis

Keywords: Head & Neck/ENT, Velocity & Flow, real time phase contrast, phase contrast, respiratory effects, cerebral veins

Real-time phase-contrast sequences are increasingly used to study the effect of breathing on cerebral circulation, however, there is a lack of studies on the effect of free breathing (E-Fb) on cerebral veins. In this study, we quantified the intensity and phase shift of the E-Fb on cerebral veins in 19 healthy volunteers using a time-domain multiparameter analysis method. We analyzed the characteristics of the E-Fb on four parameters of four cerebral veins. We found that during expiration, the mean flow rate, amplitude, stroke volume, and cardiac period of internal jugulars veins and sinuses increased.

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