title: [Assessment of the clinical feasibility of OptiGo for hand-held echocardiography].
abstract: OBJECTIVE
  Hand-held ultrasound devices are becoming available for clinical examination, but the accuracy and precision of such devices are unclear. This study compared the accuracy of a hand-held echo device to a standard echo system.
  
  
  METHODS
  Twenty-two patients were examined with the OptiGo (Phillips Medial Systems) hand-held ultrasound system with a 2.5 MHz transducer and SONOS 5500 (Phillips Medial Systems) standard ultrasound system with a 2 to 4 MHz wideband transducer. Patients with cardiac arrhythmia and tachycardia were excluded. Image quality, chamber size (left ventricle, left atrium), global and regional left ventricular function, valve morphology and severity of valve regurgitation were assessed.
  
  
  RESULTS
  There was good agreement between the two imaging devices for image quality (77.3%), left ventricular ejection fraction (90.5%), regional wall motion score (> 90%), valve morphology (> 90%), severity of valve regurgitation (> 81.0%) and there was good correlation and agreement for left ventricular and left atrial size.
  
  
  CONCLUSIONS
  Although the OptiGo has limitations, the hand-held examination appropriately estimates global and regional left ventricular function, valve morphology, valve regurgitation and chamber size.
authors.affiliation: Division of Clinical Laboratory, Kobe General Hospital, Minatojima Nakamachi 4-6, Chuo-ku, Kobe 650-0046.
authors.forename: Junichi
authors.initials: J
authors.lastname: Kawai
authors.forename: Kazuaki
authors.initials: K
authors.lastname: Tanabe
authors.forename: Toshikazu
authors.initials: T
authors.lastname: Yagi
authors.forename: Yoko
authors.initials: Y
authors.lastname: Fujii
authors.forename: Toshiko
authors.initials: T
authors.lastname: Konda
authors.forename: Toshiaki
authors.initials: T
authors.lastname: Sumida
authors.forename: Midori
authors.initials: M
authors.lastname: Okada
authors.forename: Kazuto
authors.initials: K
authors.lastname: Yamaguchi
authors.forename: Tomoko
authors.initials: T
authors.lastname: Tani
authors.forename: Kenji
authors.initials: K
authors.lastname: Yamabe
authors.forename: Shigefumi
authors.initials: S
authors.lastname: Morioka
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001022:Aortic Valve Insufficiency / Q000000981:diagnostic imaging; D015150:Echocardiography, Doppler / Q000295:instrumentation* / Q000592:standards*; D018618:Echocardiography, Doppler, Color / Q000295:instrumentation; D005069:Evaluation Studies as Topic; D005240:Feasibility Studies; D006331:Heart Diseases / Q000000981:diagnostic imaging* / Q000473:pathology; D006801:Humans; D008875:Middle Aged; D008944:Mitral Valve Insufficiency / Q000000981:diagnostic imaging / Q000473:pathology; D009200:Myocardial Contraction; D016277:Ventricular Function, Left