title: An apparatus for color Doppler imaging in seated subjects.
abstract: OBJECTIVE
  To easily perform reliable color Doppler imaging of the orbital vessels in seated subjects.
  
  
  METHODS
  Experimental study.
  
  
  METHODS
  Experimental study. An apparatus mounting the color Doppler imaging probe through a spring plate on a slit-lamp system was devised. In 16 eyes of eight seated subjects, color Doppler imaging assessments of the central retinal artery using the apparatus and by the examiner's handheld manipulation were repeated with a 10-minute interval. The reproducibility coefficients were calculated regarding the color Doppler imaging indices, including peak systolic velocity, end diastolic velocity, and resistive index.
  
  
  RESULTS
  The color Doppler imaging indices obtained with the apparatus showed no significant differences from those obtained by handheld manipulation. The time required for each measurement using the apparatus was shorter than that by handheld manipulation, and reproducibility coefficients were significantly smaller by about 50%.
  
  
  CONCLUSIONS
  Color Doppler imaging can be easily performed with good reproducibility in seated subjects using this apparatus.
authors.affiliation: Department of Ophthalmology, University of Tokyo Graduate School of Medicine, Tokyo, Japan.
authors.forename: Miyuki
authors.initials: M
authors.lastname: Nagahara
authors.forename: Atsuo
authors.initials: A
authors.lastname: Tomidokoro
authors.forename: Sawako
authors.initials: S
authors.lastname: Sando
authors.forename: Makoto
authors.initials: M
authors.lastname: Araie
authors.forename: Sumiyoshi
authors.initials: S
authors.lastname: Tanaka
mesh_terms: D000328:Adult; D001783:Blood Flow Velocity; D003941:Diagnostic Techniques, Ophthalmological / Q000295:instrumentation*; D006801:Humans; D009915:Orbit / Q000098:blood supply*; D011187:Posture; D012039:Regional Blood Flow; D015203:Reproducibility of Results; D012161:Retinal Artery / Q000000981:diagnostic imaging*; D018615:Ultrasonography, Doppler, Color / Q000295:instrumentation*