title: Assessment of three dimensional quantitative coronary analysis by using rotational angiography for measurement of vessel length and diameter.
abstract: The aim of the study was to assess the accuracy of the three-dimensional (3D) quantitative coronary analysis (QCA) system by comparing with that of intravascular ultrasound (IVUS) QCA and two-dimensional (2D) QCA. 3D QCA, 2D QCA and IVUS QCA were performed in 45 vessel segments. The obtained values for the branch to branch segment vessel length and the proximal part of the segment vessel's lumen diameter were measured. Inter-technique agreement was analyzed using paired sample t-test and Bland-Altman analysis. No differences were found in vessel lengths taken by 3D QCA and IVUS QCA (mean difference: 0.29 ± 1.06 mm, P = 0.07). When compared with IVUS QCA, 2D QCA underestimated vessel length (mean difference: -1.78 ± 2.55, P < 0.001). Bland-Altman analysis showed close agreement and a small bias between 3D QCA and IVUS QCA in the measurement of vessel length. The vessel lumen diameter measurements by 2D QCA and 3D QCA were significantly lower than that by IVUS QCA (mean difference: -0.64 ± 0.69, P < 0.001; -0.56 ± 0.52, P < 0.001 respectively). Rotational angiography with 3D reconstruction can provide a more accurate vessel length measurement, whereas 2D and 3D QCA underestimated the vessel lumen diameter compared with IVUS QCA.
authors.affiliation: Department of Cardiology, School of Medicine, Catholic University of Daegu, Daegu, Korea.
authors.forename: Jin Bae
authors.initials: JB
authors.lastname: Lee
authors.forename: Sung Gug
authors.initials: SG
authors.lastname: Chang
authors.forename: So Yeon
authors.initials: SY
authors.lastname: Kim
authors.forename: Young Soo
authors.initials: YS
authors.lastname: Lee
authors.forename: Jae Kean
authors.initials: JK
authors.lastname: Ryu
authors.forename: Ji Yong
authors.initials: JY
authors.lastname: Choi
authors.forename: Kee Sik
authors.initials: KS
authors.lastname: Kim
authors.forename: Jae Sik
authors.initials: JS
authors.lastname: Park
mesh_terms: D000368:Aged; D017023:Coronary Angiography / Q000379:methods*; D003324:Coronary Artery Disease / Q000000981:diagnostic imaging*; D005260:Female; D006801:Humans; D021621:Imaging, Three-Dimensional; D008297:Male; D008875:Middle Aged; D011237:Predictive Value of Tests; D011857:Radiographic Image Interpretation, Computer-Assisted; D014057:Tomography, X-Ray Computed; D018084:Ultrasonography, Interventional