To investigate cerebral blood flows by EPI Phase Contrast (EPI-PC) and Normal Phase contrast sequences, in volunteers. Cerebral arterial and venous blood flows were calculated by homemade software. Arterial cerebral blood flows measured by EPI-PC were significantly higher than those measured by normal PC. Whereas venous cerebral blood flows were not different between the two technics. Post processing of continuous EPI-PC flow signal provides blood flows curves during inspiration and expiration. Blood flows during inspiration were respectively higher than during expiration. EPI-PC flow quantify arterial and venous intracranial blood flows in few seconds without any cardiac or respiratory gating.
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