| UCG | ultrasonic cardiography; urinary chorionic gonadotropin |
|---|---|
| UCO | ultrasonic cardiac output; urethral catheter out; urinary catheter out |
| UEG | ultrasonic encephalography; unifocal eosinophilic granuloma |
| UF | film unsharpness; ultrafiltrate; ultrafiltration; ultrafine; ultrasonic frequency; universal feeder;... |
| UFD | ultrasonic flow detector; unilateral facet dislocation |