| Rsa | systemic arterial resistance |
|---|---|
| RT | radiologic technologist; radiotelemetry; radiotherapy; radium therapy; rapid tranquilization; reacti... |
| Rt | right; total resistance |
| RTF | resistance transfer factor; respiratory tract fluid |
| RU | radioulnar; rat unit; reading unit; residual urine; resin uptake; resistance unit; retrograde urogra... |