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Assessment of three dimensional quantitative coronary analysis by using rotational angiography for measurement of vessel length and diameter.

Lee JB, Chang SG, Kim SY, Lee YS, Ryu JK, Choi JY, Kim KS, Park JS - Int J Cardiovasc Imaging (2011)

Bottom Line: 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.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.

View Article: PubMed Central - PubMed

Affiliation: Department of Cardiology, School of Medicine, Catholic University of Daegu, Daegu, Korea.

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.

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An example of the measurements by two-dimensional quantitative coronary analysis. The angiographic length of a segment was determined by measuring the distance between the proximal and distal origin sites of the branches. The minimal luminal diameters were measured from the center of the stenosed lesion to the outline of the vessel wall
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Fig2: An example of the measurements by two-dimensional quantitative coronary analysis. The angiographic length of a segment was determined by measuring the distance between the proximal and distal origin sites of the branches. The minimal luminal diameters were measured from the center of the stenosed lesion to the outline of the vessel wall

Mentions: The vessel length was defined as the vessel segment length between the distal carina portion of the proximal side branch origin and the proximal carina portion of the distal side branch origin, as shown in Fig. 1. The proximal vessel diameter was measured at the point of the distal carina portion of the proximal side branch origin. Measurements were made in the frame that clearly demonstrated the proximal and distal branch origins for the vessel segment length and diameter measurements, as shown in Fig. 2.Fig. 1


Assessment of three dimensional quantitative coronary analysis by using rotational angiography for measurement of vessel length and diameter.

Lee JB, Chang SG, Kim SY, Lee YS, Ryu JK, Choi JY, Kim KS, Park JS - Int J Cardiovasc Imaging (2011)

An example of the measurements by two-dimensional quantitative coronary analysis. The angiographic length of a segment was determined by measuring the distance between the proximal and distal origin sites of the branches. The minimal luminal diameters were measured from the center of the stenosed lesion to the outline of the vessel wall
© Copyright Policy
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC3473188&req=5

Fig2: An example of the measurements by two-dimensional quantitative coronary analysis. The angiographic length of a segment was determined by measuring the distance between the proximal and distal origin sites of the branches. The minimal luminal diameters were measured from the center of the stenosed lesion to the outline of the vessel wall
Mentions: The vessel length was defined as the vessel segment length between the distal carina portion of the proximal side branch origin and the proximal carina portion of the distal side branch origin, as shown in Fig. 1. The proximal vessel diameter was measured at the point of the distal carina portion of the proximal side branch origin. Measurements were made in the frame that clearly demonstrated the proximal and distal branch origins for the vessel segment length and diameter measurements, as shown in Fig. 2.Fig. 1

Bottom Line: 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.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.

View Article: PubMed Central - PubMed

Affiliation: Department of Cardiology, School of Medicine, Catholic University of Daegu, Daegu, Korea.

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.

Show MeSH