title: Gadolinium-DTPA-enhanced MR imaging in asymptomatic knees.
abstract: OBJECTIVE
  To evaluate the occurrence and extent of Gd-DTPA-enhanced synovial structures in asymptomatic knee joints of middle-aged healthy individuals.
  
  
  METHODS
  MR imaging of the knee joint was performed in 10 healthy subjects aged 40-61 years. The study included a sagittal T1-weighted SE sequence before and after i.v. injection of 0.1 mmol Gd-DTPA/kg b.w.
  
  
  RESULTS
  Contrast-enhanced synovial structures were found in all knees. The extent of the synovial structures was usually not uniform within the examined joint. In the intercondylar fossa, the thickness of synovial structures was more often pronounced. In the suprapatellar recess, synovial thickness was constant and minimal.
  
  
  CONCLUSIONS
  The presence and the varying extent and thickness of synovial structures in asymptomatic knees in middle-aged individuals must be considered in the evaluation of early and mild synovitis of the knee joint with Gd-enhanced MR imaging in this age group.
authors.affiliation: Department of Diagnostic Radiology, Helsingborg County Hospital, Sweden.
authors.forename: T
authors.initials: T
authors.lastname: Boegård
authors.forename: A
authors.initials: A
authors.lastname: Johansson
authors.forename: O
authors.initials: O
authors.lastname: Rudling
authors.forename: I
authors.initials: I
authors.lastname: Petersson
authors.forename: K
authors.initials: K
authors.lastname: Forslind
authors.forename: K
authors.initials: K
authors.lastname: Jonsson
mesh_terms: D000328:Adult; D003287:Contrast Media; D005260:Female; D005682:Gadolinium; D019786:Gadolinium DTPA; D006801:Humans; D007719:Knee Joint / Q000033:anatomy & histology*; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D009942:Organometallic Compounds; D004369:Pentetic Acid / Q000031:analogs & derivatives*; D012016:Reference Values; D013583:Synovial Membrane / Q000033:anatomy & histology; D013585:Synovitis / Q000175:diagnosis
chemical_list: D003287:Contrast Media; D009942:Organometallic Compounds; D004369:Pentetic Acid; D005682:Gadolinium; D019786:Gadolinium DTPA