| RTS | real time scan; Rett syndrome; revised trauma score; right toestrike; Rothmund-Thomson syndrome; Rub... |
|---|---|
| RTU | real-time ultrasonography; relative time unit; renal transplantation unit |
| EFFU | epithelial focus-forming unit |
| FFD | Fellow in the Faculty of Dentistry; focus-film distance |
| FFIT | fluorescent focus inhibition test |