title: [Performance evaluation of dual-head coincidence gamma camera for positron imaging].
abstract: OBJECTIVE
  We assessed the performance evaluation of a dual-head coincidence gamma camera (Millennium VG, General Electric, Milwaukee, USA) as a positron emission tomography (PET) scanner based on the measurement indicator for performance evaluation of PET device.
  
  
  RESULTS
  The axial spatial resolution was 4.98 mm FWHM at the center of the field of view. The true high count-rate characteristic curve was relatively straight within the range 0-0.2 microCi/ml. The relative recovery coefficient was 0.1 with a diameter of 10 mm and 0.39 with a diameter of 20 mm.
  
  
  CONCLUSIONS
  In this study, we had to make a some change in the protocols described in the measurement indicator for performance evaluation of PET devices.
authors.affiliation: Department of Radiology, Tohoku University.
authors.forename: Tomohiro
authors.initials: T
authors.lastname: Kaneta
authors.forename: Keiichirou
authors.initials: K
authors.lastname: Yamaguchi
authors.forename: Hideyuki
authors.initials: H
authors.lastname: Kurihara
authors.forename: Yoetsu
authors.initials: Y
authors.lastname: Abe
authors.forename: Tetsuro
authors.initials: T
authors.lastname: Yamazaki
authors.forename: Takashi
authors.initials: T
authors.lastname: Hakamaduka
authors.forename: Toru
authors.initials: T
authors.lastname: Sakayauchi
authors.forename: Yoshihiro
authors.initials: Y
authors.lastname: Takai
authors.forename: Shin
authors.initials: S
authors.lastname: Maruoka
authors.forename: Shigeo
authors.initials: S
authors.lastname: Kinomura
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Fukuda
authors.forename: Masatoshi
authors.initials: M
authors.lastname: Itoh
authors.forename: Shoki
authors.initials: S
authors.lastname: Takahashi
authors.forename: Shogo
authors.initials: S
authors.lastname: Yamada
mesh_terms: D015902:Gamma Cameras; D006801:Humans; D014055:Tomography, Emission-Computed / Q000295:instrumentation*