• Amy H Kaji, Timothy B Jang, and Wendy Ruggeri.
• Department of Emergency Medicine, David Geffen School of Medicine at UCLA, Olive View Medical Center, Sylmar, California 91342, USA.
• J Emerg Med. 2013 Jan 1;44(1):198-203.

BackgroundIt is unknown how an intensive emergency ultrasound (EUS) experience compares with comparable exposure done over the course of residency training.ObjectiveOur objective was to compare the accuracy of EUS of the gall bladder done by physicians after a 2-week EUS elective with similarly numbered examinations done by physicians longitudinally over several years of residency training.MethodsThis was a secondary analysis of a previously reported prospective study of EUS for biliary disease. The 21(st)-40(th) examinations were compared between those who participated in an EUS elective and those who did not. The gold standard was ultrasound done by the Department of Radiology.ResultsMean time to complete 40 EUS examinations for biliary disease was 14 months for those participating in an EUS elective compared with 29 months for those who did not. One hundred and ninety-one examinations (49%) were done by 19 operators who did not participate in an EUS elective and 202 examinations (51%) were done by 23 operators who completed an EUS elective. There was no statistical difference between the two groups with regard to detecting the presence of gall stones, gall bladder wall thickening, pericholecystic free fluid, ductal dilation, or sludge.ConclusionsPhysicians who participated in a 2-week, semi-structured EUS elective demonstrated EUS accuracy for biliary disease that was comparable with those who performed the same number of examinations over a longer period of time.Copyright © 2013 Elsevier Inc. All rights reserved.

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