Fig. 1From: Correlation of carotid blood flow and corrected carotid flow time with invasive cardiac output measurements a Carotid systole time, as measured from the start of the systolic upstroke to the start of the dicrotic notch (left). Carotid cycle time, as measured from start of one systolic upstroke to the next (right). b Velocity time integral tracing of the spectral Doppler signal (left). Carotid diameter (right)Back to article page