| NRM | National Registry of Microbiologists; normal range of motion; nucleus reticularis magnocellularis |
|---|---|
| RN | radionuclide; red nucleus; Registered Nurse; registry number; residual nitrogen; reticular nucleus |
| RT(ARRT) | Radiologic Technologist certified by the American Registry of Radiologic Technologists |
| RTECS | Registry of Toxic Effects of Chemical Substances |
| RT(N)(ARRT) | Radiologic Technologist (Nuclear Medicine) certified by the American Registry of Radiologic Technolo... |