title: [Image quality assessment of Step&Shoot overlap reconstruction (SSOR) for cardiac computed tomography (CT)].
abstract: BACKGROUND
  Step&Shoot cardiac computed tomography (CT) provides the benefit of significant reduction in radiation dose compared to helical cardiac CT acquisitions. We think that a difference occurs in image quality by presence of overlap reconstruction (fractionated sentence, attempted to clarify).
  
  
  OBJECTIVE
  We studied the utility of Step&Shoot overlap reconstruction (SSOR).
  
  
  METHODS
  We evaluated image quality of SSOR by comparing z-axis spatial resolution on various s in scanners that SSOR is possible and for those that are impossible.
  
  
  RESULTS
  SSOR indicated better z-axis spatial resolution and less variation over the field of view (FOV) (in z & x-y directions) as compared with Step&Shoot without overlap reconstruction (SS). In addition, SS showed inadequate image reproducibility due to aliasing error in z-direction (lack of sampling interval).
  
  
  CONCLUSIONS
  SSOR would contribute to improvement of the image quality of Step&Shoot cardiac CT.
authors.affiliation: Sapporo Medical University Hospital.
authors.forename: Taiki
authors.initials: T
authors.lastname: Chono
authors.forename: Tohru
authors.initials: T
authors.lastname: Hirano
authors.forename: Takeshi
authors.initials: T
authors.lastname: Inoue
authors.forename: Shinichi
authors.initials: S
authors.lastname: Tokuyasu
authors.forename: Ko
authors.initials: K
authors.lastname: Higuchi
mesh_terms: D017023:Coronary Angiography / Q000379:methods*; D023921:Coronary Stenosis / Q000000981:diagnostic imaging; D005260:Female; D006321:Heart / Q000000981:diagnostic imaging; D006801:Humans; D008875:Middle Aged; D019047:Phantoms, Imaging; D014057:Tomography, X-Ray Computed / Q000295:instrumentation / Q000379:methods* / Q000592:standards