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| English | French |
| extra-focal radiation | rayonnement extrafocal (of an X-ray tube) |
| focal depth | profondeur du tumeur |
| focal dose | dose tumorale |
| focal localization | localisation des tumeurs |
| focal spot | foyer optique (of an X-ray tube) |
| projected focal area | foyer optique (spot) |
| short focal distance irradiation | radiothérapie de contact (focal distance up to about 5 cm; use of nuclear radiation or Xrays) |
| short focal distance therapy | radiothérapie de contact |
| total focal dose | dose tumorale totale |