The dynamic variance of cerebral blood flow velocity (CBFV), monitored by transcranial doppler (TCD), can reveal the integrated effects of cardio-cerebral vascular autoregulation. We investigated the characteristics of CBFV curve during active standing in multiple system atrophy (MSA), Parkinson's disease (PD) and healthy volunteers.
Department of Neurology, Peking Union Medical College Hospital, Chinese Academy of Medical Science, Shuaifuyuan 1, Beijing, China. xuwhpumch@yahoo.com.cn