title: Single- versus multi-phase acquisition protocol for prospective-triggered sequential dual-source CT coronary angiography: comparison of image quality and radiation dose.
abstract: OBJECTIVE
  To investigate image quality and radiation dose of single- versus multi-phase acquisition protocol for prospective-triggered sequential dual-source computed tomography (CT) coronary angiography.
  
  
  METHODS
  A total of 140 patients were randomly assigned to single- or multi-phase group. Image quality and radiation dose were compared.
  
  
  RESULTS
  No significant difference was found in image quality between the two groups. Effective dose of single-phase group was 21.6% lower than that of multi-phase group (P<.001).
  
  
  CONCLUSIONS
  Prospective-triggered sequential dual-source CT coronary angiography using single-phase protocol can reduce radiation dose without sacrifice of image quality in diastole compared with multi-phase protocol.
authors.affiliation: Department of Medical Imaging, Nanjing Jinling Hospital, Southern Medical University (Guangzhou), 305# Eastern Zhongshan Road, Nanjing 210002, China; Department of Medical Imaging, Huai'an First People's Hospital, Nanjing Medical University, 6# Western Beijing Road, Huai'an 223300, China. Electronic address: hw6343@163.com.
authors.forename: Wei
authors.initials: W
authors.lastname: Huang
authors.affiliation: Department of Medical Imaging, Huai'an First People's Hospital, Nanjing Medical University, 6# Western Beijing Road, Huai'an 223300, China.
authors.forename: Yiming
authors.initials: Y
authors.lastname: Xu
authors.affiliation: Department of Medical Imaging, Huai'an First People's Hospital, Nanjing Medical University, 6# Western Beijing Road, Huai'an 223300, China.
authors.forename: Daoyan
authors.initials: D
authors.lastname: Lu
authors.affiliation: Department of Medical Imaging, Huai'an First People's Hospital, Nanjing Medical University, 6# Western Beijing Road, Huai'an 223300, China.
authors.forename: Yuzhen
authors.initials: Y
authors.lastname: Shi
authors.affiliation: Department of Medical Imaging, Nanjing Jinling Hospital, Southern Medical University (Guangzhou), 305# Eastern Zhongshan Road, Nanjing 210002, China. Electronic address: cjr.luguangming@vip.163.com.
authors.forename: Guangming
authors.initials: G
authors.lastname: Lu
mesh_terms: D000368:Aged; D017023:Coronary Angiography / Q000379:methods*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D011829:Radiation Dosage; D014057:Tomography, X-Ray Computed / Q000379:methods
keywords: Coronary angiography; Image quality; Radiation dose; Tomography; X-ray computed