title: Power doppler ultrasonography in ocular and orbital diseases.
abstract: OBJECTIVE
  The authors present a preliminary report to test the usefulness of a new technique called power Doppler ultrasonography (PD) in the study of orbital vessels.
  
  
  METHODS
  The ophthalmic artery and vein as well as the central retinal artery and vein have been examined in 10 patients with a General Electric Logiq 5000 that allows the examination with both color Doppler ultrasonography (CD) and PD.
  
  
  RESULTS
  PD does not alias, is relatively angle independent and is able to better detect the pathways of these vessels.
  
  
  CONCLUSIONS
  PD is a new promising technique that may be superior to CD in detecting orbital and ocular vessels.
authors.affiliation: Eye Department, University of Naples Frederico II, Naples, Italy.
authors.forename: N
authors.initials: N
authors.lastname: Rosa
authors.forename: G
authors.initials: G
authors.lastname: Cennamo
authors.forename: M A
authors.initials: MA
authors.lastname: Breve
authors.forename: P
authors.initials: P
authors.lastname: De Ruggiero
mesh_terms: D001783:Blood Flow Velocity; D005123:Eye / Q000098:blood supply; D005128:Eye Diseases / Q000000981:diagnostic imaging* / Q000503:physiopathology; D006801:Humans; D009880:Ophthalmic Artery / Q000000981:diagnostic imaging*; D009915:Orbit / Q000098:blood supply; D009916:Orbital Diseases / Q000000981:diagnostic imaging* / Q000503:physiopathology; D012161:Retinal Artery / Q000000981:diagnostic imaging*; D012169:Retinal Vein / Q000000981:diagnostic imaging*; D018615:Ultrasonography, Doppler, Color