Telementoring for Emergency Ultrasonography Performed by Emergency Physicians With Low Experience.

1. Purpose * This study aims to evaluate the feasibility of iPhone based telementoring for the ultrasonography. 2. Methods * Study Design: Prospective observational study * Study Setting: Urban academic ED of tertiary care teaching hospital * Study period: July, 2014 \~ December, 2014 (six months) * Study participants: Of the patients who need to undergo ultrasonography in the ED, those who are agreed to participate in this study are enrolled. 3. We hypothesize that the iPhone based real time tele-diagnosis by remote expert would not be different from the diagnosis via his/her direct ultrasound examination.