Abdominal aortic aneurysm diameter: A comparison of ultrasound measurements with those from standard and three-dimensional computed tomography reconstruction

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Presentation transcript:

Abdominal aortic aneurysm diameter: A comparison of ultrasound measurements with those from standard and three-dimensional computed tomography reconstruction Brian J. Manning, MD, FRCSI, Thorarinn Kristmundsson, MD, Björn Sonesson, MD, PhD, Timothy Resch, MD, PhD Journal of Vascular Surgery Volume 50, Issue 2, Pages 263-268 (August 2009) DOI: 10.1016/j.jvs.2009.02.243 Copyright © 2009 Society for Vascular Surgery Terms and Conditions

Fig 1 Differing diameter measurements according to axis. Clockwise from left: maximum anteroposterior, maximum ellipse and perpendicular to maximum ellipse, perpendicular to the centerline of flow, and three-dimensional reconstruction along the axis of the centerline of flow. Journal of Vascular Surgery 2009 50, 263-268DOI: (10.1016/j.jvs.2009.02.243) Copyright © 2009 Society for Vascular Surgery Terms and Conditions

Fig 2 Correlation between computed tomography (CT) anteroposterior (AP) measurement and ultrasound AP measurement. Correlation coefficient was 0.91. Journal of Vascular Surgery 2009 50, 263-268DOI: (10.1016/j.jvs.2009.02.243) Copyright © 2009 Society for Vascular Surgery Terms and Conditions

Fig 3 Bland-Altman plots illustrate the bias towards smaller mean diameter measurements for AP ultrasound (US) when compared with computed tomography (CT) in different planes (A) anteroposterior (AP) (B) maximum ellipse (ME), (C) perpendicular to the centerline of flow (PCLF), (D) perpendicular to the maximum ellipse (PME). Differences between CT measurements are also shown in (E) CT-AP vs CT-PCLF and (F) CT PCLF vs CT PME. Note that the x-axis range varies between plots. Journal of Vascular Surgery 2009 50, 263-268DOI: (10.1016/j.jvs.2009.02.243) Copyright © 2009 Society for Vascular Surgery Terms and Conditions