Endoscopic Ultrasonography: The State of the Art

Charles J. Lightdale, MD

Disclosures

October 24, 2002

In This Article

Introduction

Gastroenterologists from 45 countries and across the United States gathered in New York City October 4-6 for the 13th International Symposium on Endoscopic Ultrasonography. The 3-day conference featured presentations defining the state-of-the-art of endoscopic ultrasonography (EUS), which has been used clinically for the past 20 years. EUS uses ultrasound probes carried on endoscopes, so that ultrasound images can be obtained from inside the gastrointestinal tract.

Using ultrasound imaging from inside the body helps prevent the artifacts that can occur when imaging through the abdominal and chest wall. Degradation of the image by bone, fat, and bowel gas can be avoided. In addition, higher frequencies of ultrasound can be used. The higher the frequency the shorter the penetration depth, but because EUS places the ultrasound probe by endoscopy very close to the area to be examined, the smaller imaging area is not a problem.[1]

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