Just like the brain of a dolphin, the computer attached to the ultrasound wand creates an image based on the tiniest echoes that the sound waves cause. When taking longaxis view of blood vessels (longitudinal image), the direction is presented on the image obtained. That’s why it’s safe to use ultrasound waves during prenatal checkups. Human ears are not capable of detecting ultrasound waves like those used in a carotid doppler.

The test is performed using only an ultrasound wand attached to a computer that creates images based on the sound waves bouncing off the blood vessels. Objectives: Adequate assessment of fluid responsiveness in shock necessitates correct interpretation of hemodynamic changes induced by preload challenge. The word ‘doppler’ refers to a special technique where the source of the sound waves, in this case, the doppler wand, is moving. A carotid doppler ultrasound is done to determine whether you have changes to the lining of your arteries that may be causing a narrowing of the carotid. They supply oxygen-rich blood to the brain, face, and neck.A carotid doppler uses soundwaves to create an image of the carotid arteries. Carotid atherosclerosis is a major indicator for the need to perform carotid duplex ultrasound, which can determine the degree of stenosis, plaque characteristics, and intima-media thickness. The carotid arteries are two of the largest blood vessels in the body. Carotid duplex ultrasound is commonly used to diagnose various carotid artery diseases due to it being noninvasive and easy to perform.

Carotid doppler