Because ultrasonography uses high frequency sound waves, and not x rays or other forms of radiation , there are very few risks associated with its use
Doppler ultrasonography uses what is called the Doppler effect to measure the rate and direction of blood flow in the vessels.
ultrasonography
Ultrasonography
Ultrasonography uses ultrasound waves to look at soft tissues, organs, veins and muscles (as well as babies). X-rays and CT scans use radiation to produce images.
doppler ultrasound
Cranial ultrasonography is most often used in infants to diagnose problems with the brain
Transcranial Doppler ultrasonography is a noninvasive method of analyzing blood flow in the brain.
Sonogram
Ultrasonography is also called sonography, diagnostic sonography, and echocardiography when it is used to image the heart
Carotid Ultrasonography
A Doppler ultrasonography test showing no restricted blood flow is a normal finding.