Fig. 2

Diagram shows measurement of the carotid artery using a slanted gel pad to decrease beam-flow angle. a Diagram shows a slanted gel pad placed between the ultrasound transducer and skin which is decreasing the beam-flow angle. b As the skin and soft tissue is slightly elastic the probe and slanted gel pad can be tilted and compressed against the neck during measurement to further decrease beam-flow angle. This technique was left to the radiologists to perform according to personal preferences