Carotid duplex ultrasonography ; Vertebral artery ; Jugular vein ; Basic principles of ultrasound ; Guideline ; Standard examination
Abstract
Use of ultrasound is safe in humans, and has been widely used in medical applications.
B-mode sonography produces cross-sectional images and Doppler sonography
measures blood flow velocities. Carotid duplex ultrasonography (CDU) has
been mainly utilized in cerebrovascular disease. Recently, its use has been expanded
in Parkinson's disease and neuromuscular disease as well as pain management.
Point-of-care ultrasound is used in emergency and intensive care settings, and
has the advantage of short examination time, relatively low cost, and reproducibility.
However, the results may vary depending on the examiner’s skill. Therefore,
a standard protocol for examination is needed. This practice guideline discusses
basic principles, artifacts, and standard techniques, and thus can improve understanding
of CDU for neck vessels.