Medical abbreviations and acronyms (F)

This article contains a list of commonly used medical abbreviations and acronyms that start with the letter F and may be encountered in medicine and radiology (please keep both the main list and any sublists in alphabetic order).

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• F
  • farad
  • female
  • fluorine
  • French gauge
  • phenylalanine (single amino acid code)
• FA
  • fibroadenoma
  • facet asymmetry
• FABER: flexion, abduction, and external rotation manoeuvre
• FACR: Fellow of the American College of Radiology
• FAF: fissula ante fenestram
• FAI: femoroacetabular impingement
• FAIR: flow sensitive alternating inversion recovery 
• FAMMM: familial atypical multiple mole melanoma syndrome​
• FASI: focal areas of signal intensity
• FAST
  • focused assessment with sonography for trauma
  • Fourier-acquired steady state
• Fat sat: fat saturation
• Fax: facsimile
• FB: foreign body
• FBC: full blood count
• FBG: fasting blood glucose
• FBOA: foreign body obstructed airway
• FBMS: fasting metabolic bone studies
• FCC: fibrocystic change
• FCD
  • fibrocystic disease (of the breast)
  • fibrous cortical defect
  • fibrous cortical dysplasia
• FCL: fibular collateral ligament
• FCMD: Fukuyama congenital muscular dystrophy
• FC Rad Diag(SA): Fellowship of the College of Radiologists of South Africa
• FCRB: flexor carpi radialis brevis vel profundus
• FD
  • fibrous dysplasia
  • found down (unconscious)
• FDA: Food and Drug Administration (a federal agency of United States)
• FDG: fluorodeoxyglucose
• FDL: flexor digitorum longus
• FDP
  • fibrin degradation product
  • flexor digitorum profundus
• FDS: flexor digitorum superficialis
• FE: flexion-extension
• Fe: iron (Latin: ferrum)
• FEP: first ever psychosis
• FES: fat embolism syndrome
• FESS: functional endoscopic sinus surgery
• FEV1: forced expiratory volume in 1 second
• FEVAR: fenestrated endovascular aortic repair
• FFA: free fatty acids
• FFD: fixed flexion deformity
• FFI: focal fatty infiltration
• FFL: fabellofibular ligament
• FFP: fresh frozen plasma
• FFS: focal fatty sparing
• FGI: fluoroscopically guided intervention
• FGR: foetal fetal growth restriction
• FH: family history
• FHM: fetal heart motion
• FHR: fetal heart rate
• FHS: fetal heart sounds
• FHx: family history
• FI: for investigation
• FID: free induction decay
• FIESTA: fast imaging employing steady state acquisition
• FIF: forced inspiratory flow
• FiNA: fine needle aspiration
• FiO₂: fraction of inspired oxygen
• FIRES: febrile infection-related epilepsy syndrome
• FISP: fast imaging with steady-state precession
• FJ: facet joint
• FL: femur length (obstetric USS)
• FLAIR: fluid-attenuated inversion recovery
• FLASH: fast low angle shot
• FLC: fibrolamellar carcinoma
• FLCN-S: folliculin gene-associated syndrome
• FLI: flu like illness
• Fluoro: fluoroscopy
• FMD: fibromuscular dysplasia
• FMF: familial Mediterranean fever
• fMRI: functional magnetic resonance imaging
• FN: febrile neutropenia
• FNA: fine needle aspiration
• FNAB: fine needle aspiration biopsy
• FNAC: fine needle aspiration cytology
• FNE: fibreoptic nasoendoscopy
• FNH: focal nodular hyperplasia
• FNMR: Fédération Nationale des Médecins Radiologues (French radiologists' union)
• FO: foramen ovale
• FOB: faecal occult blood
• FOBT: faecal occult blood test
• FOLFOX: Fluorouracil, leucovorin (fOLinic acid), OXaliplatin
• FOM: floor of mouth
• FONAR: field focusing nuclear magnetic resonance
• FOOSH: fall on outstretched hand
• FOSIT: feeling of something in the throat
• FOV: field of view
• FP: fetal pole
• FPCT: flat panel CT
• FPIES: food protein-induced enterocolitis syndrome
• fPSA: free prostate specific antigen
• FPS-R: faces pain scale-revised
• Fr: French gauge
• FRANZCR: Fellow of the Royal Australian and New Zealand College of Radiologists
• FRC: functional residual capacity
• FRCR: Fellow of the Royal College of Radiologists
• FROEM: full range of eye movements
• FROM: full range of movement
• FS
  • fat saturation/suppression
  • foramen spinosum
• F/S: frames/second
• FSE: fast spin echo
• FSH: follicle-stimulating hormone
• FSHD: facioscapulohumeral muscular dystrophy
• FT
  • follow-through
  • Fourier transform
  • full-time
• fT₃: free tri-iodothyronine
• fT₄: free thyroxine
• FTD: frontotemporal dementia
• FTS: first trimester screening
• FU: fluorouracil
• F/U: follow-up
• FUO: fever of unknown origin
• FV: femoral vein
• FVC: forced vital capacity
• FVL: factor V Leiden (V=5, Roman numeral)
• FWHM: full width at half maximum
• FWT: full ward test (urine)
• Fx: fracture