title: Doppler ultrasound findings in healthy wrists and finger joints before and after use of two different contrast agents.
abstract: OBJECTIVE
  To examine the effect of contrast agents on Doppler ultrasound findings in the synovial membrane in the wrist and fingers of healthy volunteers.
  
  
  METHODS
  Eleven healthy subjects were included in the study (5 women and 6 men, mean age 38 years, range (20-60)). They had no clinical signs of inflammatory or degenerative joint diseases. A total of 66 joints were examined-6 joints for each subject: wrist and metacarpophalangeal (MCP) joints 1-5-before contrast injection and after Levovist and SonoVue injection with a 30 minute interval.
  
  
  RESULTS
  Colour Doppler activity was detected in 10/55 (18%) MCP joints before contrast injection and in 29/55 (53%) and 28/55 (51%) joints after Levovist (p<0.0001) and SonoVue injection (p = 0.0001), respectively. A significant increase in Doppler activity in the radial (p<0.05) and ulnar (p = 0.01) parts of the wrist joint was detected only after SonoVue injections. With spectral Doppler no difference was found in the resistive index (RI) in the vessels measured before as compared with those only detected after contrast injection.
  
  
  CONCLUSIONS
  The number of joints with colour Doppler activity in healthy volunteers was increased by the use of contrast agents. No changes in RI were detected. The value of contrast agents remains to be demonstrated in inflammatory diagnostics.
authors.affiliation: Parker Institute, Department of Rheumatology, Frederiksberg Hospital, DK 2000 Frederiksberg, Denmark. parker@fh.hosp.dk
authors.forename: L
authors.initials: L
authors.lastname: Terslev
authors.forename: S
authors.initials: S
authors.lastname: Torp-Pedersen
authors.forename: N
authors.initials: N
authors.lastname: Bang
authors.forename: M J
authors.initials: MJ
authors.lastname: Koenig
authors.forename: M B
authors.initials: MB
authors.lastname: Nielsen
authors.forename: H
authors.initials: H
authors.lastname: Bliddal
mesh_terms: D000328:Adult; D003287:Contrast Media; D005260:Female; D006801:Humans; D008297:Male; D008662:Metacarpophalangeal Joint / Q000000981:diagnostic imaging*; D008875:Middle Aged; D010743:Phospholipids; D011134:Polysaccharides; D011884:Radius / Q000000981:diagnostic imaging; D013459:Sulfur Hexafluoride; D013583:Synovial Membrane / Q000098:blood supply / Q000000981:diagnostic imaging; D014457:Ulna / Q000000981:diagnostic imaging; D018615:Ultrasonography, Doppler, Color / Q000379:methods; D014655:Vascular Resistance; D014955:Wrist Joint / Q000000981:diagnostic imaging*
chemical_list: D003287:Contrast Media; D010743:Phospholipids; D011134:Polysaccharides; C420843:contrast agent BR1; C059891:SHU 508; D013459:Sulfur Hexafluoride