title: [A comparative study of target vessel assessments by three- and two-dimensional quantitative coronary X-ray angiography and visual estimation].
abstract: OBJECTIVE
  To compare the efficacy of three-dimensional (3D) and two-dimensional (2D) quantitative coronary X-ray angiography (QCA) and visual estimation in the assessment of target vessels.
  
  
  METHODS
  The radiographic data of 60 patients (65 vessel segments) receiving coronary angiography and interventional stent placement were retrospectively analyzed. The area stenosis, diameter stenosis, lesion length, and reference diameter assessed by Medis 3D QCA, Siemens 2D QCA and visual estimation were compared.
  
  
  RESULTS
  Three-dimensional reconstruction was successfully performed for 65 vessel segments, and 3 target vessel were excluded due to the lack of a second angiographic view for 3D reconstruction. There were significant differences in the assessments of the area stenosis [(73.87 ∓ 8.98)% vs (79.10 ∓ 8.06)% vs (83.53 ∓ 8.19)%, P<0.001], lesion length (28.95 ∓ 17.31 mm vs 26.20 ∓ 16.04 mm vs 27.21 ∓ 16.58 mm, P<0.001), reference diameter (28.95 ∓ 17.31 mm vs 26.2 ∓ 16.04 mm vs 27.21∓16.58 mm, P<0.001) by 3D QCA, 2D QCA and visual estimation; the diameter stenosis assessed by 3D [(54.21 ∓ 9.48)%] and 2D QCA [(57.84 ∓ 10.17)%] also differed significantly (P=0.016).
  
  
  CONCLUSIONS
  3D QCA allows successful three-dimensional reconstruction of the target vessel and restores the actual dimensions of the vessel for a more accurate assessment of coronary artery disease than 2D QCA and visual estimation.
authors.affiliation: Department of Cardiology, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China.
authors.forename: Pei-yuan
authors.initials: PY
authors.lastname: Hao
authors.forename: Ai-hua
authors.initials: AH
authors.lastname: Chen
authors.forename: Xu-dong
authors.initials: XD
authors.lastname: Song
authors.forename: Xiang-long
authors.initials: XL
authors.lastname: Wei
authors.forename: Shan-shan
authors.initials: SS
authors.lastname: Zhou
authors.forename: Fei
authors.initials: F
authors.lastname: He
authors.forename: Sheng-xian
authors.initials: SX
authors.lastname: Tu
mesh_terms: D000368:Aged; D017023:Coronary Angiography / Q000379:methods*; D003327:Coronary Disease / Q000000981:diagnostic imaging* / Q000473:pathology; D003331:Coronary Vessels / Q000473:pathology*; D005260:Female; D006801:Humans; D007090:Image Interpretation, Computer-Assisted; D021621:Imaging, Three-Dimensional / Q000379:methods*; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies