Dynamic geometry and wall thickness of the aortic neck of abdominal aortic aneurysms with intravascular ultrasonography Frank R. Arko, MD, Erin H. Murphy,

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Presentation transcript:

Dynamic geometry and wall thickness of the aortic neck of abdominal aortic aneurysms with intravascular ultrasonography Frank R. Arko, MD, Erin H. Murphy, MD, Chad M. Davis, BS, Eric D. Johnson, MS, Stephen T. Smith, MD, Christopher K. Zarins, MD Journal of Vascular Surgery Volume 46, Issue 5, Pages 891-897 (November 2007) DOI: 10.1016/j.jvs.2007.06.030 Copyright © 2007 The Society for Vascular Surgery Terms and Conditions

Fig 1 Luminal changes of the aortic circumference through a single cardiac cycle demonstrate the anisotropic movement of the aortic neck of an abdominal aortic aneurysm. Notice the significantly greater movement in the anteroposterior (AP) axis as compared with the lateral axis as labeled. Journal of Vascular Surgery 2007 46, 891-897DOI: (10.1016/j.jvs.2007.06.030) Copyright © 2007 The Society for Vascular Surgery Terms and Conditions

Fig 2 A, Original image of intravascular ultrasonography (IVUS) captured with the Digital Imaging and Communications in Medicine viewer. During IVUS, the gain was set at 40 and then saved as a bitmap image. B, The image was then opened with Scion PCI frame grabber, and the image is then inverted. Notice in both images that the IVUS catheter is in the central lumen of the vessel. C, Thresholds are then set on the inverted image to 146 on Scion PCI frame grabber to estimate the aortic wall thickness. Journal of Vascular Surgery 2007 46, 891-897DOI: (10.1016/j.jvs.2007.06.030) Copyright © 2007 The Society for Vascular Surgery Terms and Conditions