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Abstract #0321

Real-Time Phase Contrast MRI to quantify Cerebral arterial flow variations during normal breathing

Liu Pan1,2, Sidy Fall1, Serge Metanbou3, and Olivier Baledent1,2
1CHIMERE UR 7516, Jules Verne University, Amiens, France, 2Medical Image Processing Department, Jules Verne University Hospital, Amiens, France, 3Department of Radiology, Jules Verne University Hospital, Amiens, France


Real-time phase contrast MRI has been applied to investigate cerebral arterial blood flow (CABF) during normal breathing of healthy volunteers. We developed a novel time-domain analysis method to quantify the effect of normal breathing on several parameters of CABF. We found the existence of a delay between the recorded respiratory signal from the belt sensor and the breathing frequency component presents in the reconstructed arterial blood flows. During the expiratory, the mean flow rate of CABF increased by 4.4±1.7%, stroke volume of CABF increased by 9.8±3.1% and the duration of the cardiac period of CABF increased by 8.1±3%.

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