Blood volume per time measured in: cm3/s.
The sonographic detection of blood flow in vascular ultrasound is limited by factors such as tissue motion (clutter), attenuation properties of the intervening tissue, and slow or low-volume flow.
Different flow types in human body:
Behaves like stationary tissue = stagnant flow.
Flow with consistent velocities across a vessel = laminar flow.
Laminar flow passes through a stricture or stenosis (in the center fast flow, near the walls the flow spirals) = vortex flow.
The flow rate describes the volume of fluid passing through a given vessel per time unit. The flow rate is measured in milliliters per second ml/sec or liters per minute l/min.
See also Poiseulles Law.
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