Medisin for realfag- og teknologistudenter - Ultrasound

Spørsmål #121

A blood vessel has a narrowing (stenosis) in a short segment. In the normal part of the vessel, the cross sectional area is 1 cm2, a blood velocity of 1 m/s and a systolic pressure of 120 mmHg. Through the stenosis, the blood velocity increases to 4 m/s. What is the cross sectional area of the stenosis?

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