A technician referred to as a sonographer conducts a carotid ultrasound with a small, handheld system known as a transducer. The transducer emits seem waves and documents the echo since the waves bounce off tissues, organs and blood cells. The human body reacts mainly because it does to an injury. https://www.sgvascularctr.com/revealing-the-latest-innovations-in-carotid-artery-disease-treatment/