WHAT IS ENDOSCOPIC ULTRASONOGRAPHY (EUS) TEST?
One of the newest uses for ultrasonography involves taking ultrasound images from within the GI tract. EUS improves diagnostic accuracy by reducing artefacts that occur from anatomic structures and gas when imaging from the exterior of the body. Because the ultrasound probe is much closer to the area being examined, higher frequency ultrasound can be used, which normally is not an option when imaging from greater distances. Higher frequencies can provide clearer images of smaller areas and better detail of the layers of the GI tract, which are often the site where cancer begins.