Fig. 1From: Correlation of carotid corrected flow time and respirophasic variation in blood flow peak velocity with stroke volume variation in elderly patients under general anaesthesiaCarotid FTc and ΔVpeak measurement with Doppler ultrasound.Time C is FT.FTc carotid corrected flow time,ΔVpeak respirophasic variation in carotid artery blood flow peak velocity,FT flow timeBack to article page