X-Ray, CT, Nuclear Medicine Abbreviations - U 1 - 7 (of 7) •UBO-USDW • UBO Unidentified Bright Object • UCA Ultrasonic Contrast Agents • UmbA Umbilical Artery • US UltraSound • USAN United States Adopted Names • USCAs Ultrasound Contrast Agents • USDW Underground Source of Drinking Water 1 - 7 (of 7) •UBO-USDW My girlfriend always laughs during sex ----- no matter what she's reading. - Steve Jobs |