Assertion: doppler ultrasound | /r/CapableOf | use sound waves
Facets:
value: to determine direction
type: PURPOSE
value: to create images
type: PURPOSE
Source sentences:
text: A Doppler ultrasound uses sound waves to create images of how a person’s blood is flowing through their veins and arteries.
text: Doppler ultrasounds use sound waves to determine the speed and direction of blood cells as they travel through blood vessels.﻿﻿