Sunday, 5 May 2024, 11:02 PM
Site: VetLogic - E Learning and training for Vet Nurses
Course: VetLogic - E Learning and training for Vet Nurses (VetLogic)
Glossary: Glossary with audio assistance
F
Film focal distance (FFD)the distance between the focal spot in the tube head and the X-ray film on the table. Usually 75-100 cm. |
First filial generationthe offspring produced from a parental cross, denoted as F1 in genetic notation |
Fixera chemical used in radiographic processing, which dissolves unexposed silver bromide crystals and causes the film's emulsion to harden |
Flagellalong cell appendages used for locomotion in some micro-organisms. Singular - flagellum. |
Flexi-cassettea flexible structure which contains intensifying screens and X-ray film |
Fluoroscopyimaging technique that uses X-rays to view real-time images |
Focal spotthe actual small area on the target that the electrons hit |
Focussed grida grid where the lead strips are progressively more angled towards the edges |
Focussing cupa structure located at the cathode in the tubehead, made of molybdenum, which focuses the electron beam towards the anode |
Foggingan overall appearance of grey on a radiograph which decreases contrast |