Vikash Ravi Goel, MS, Roy K. Greenberg, MD, Donald P. Greenberg, PhD

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Presentation transcript:

Mathematical analysis of DICOM CT datasets: Can endograft sizing be automated for complex anatomy? Vikash Ravi Goel, MS, Roy K. Greenberg, MD, Donald P. Greenberg, PhD Journal of Vascular Surgery Volume 47, Issue 6, Pages 1306-1312 (June 2008) DOI: 10.1016/j.jvs.2007.12.046 Copyright © 2008 The Society for Vascular Surgery Terms and Conditions

Fig 1 A view of a segmented scan. Everything other than the vasculature has been removed. Journal of Vascular Surgery 2008 47, 1306-1312DOI: (10.1016/j.jvs.2007.12.046) Copyright © 2008 The Society for Vascular Surgery Terms and Conditions

Fig 2 A simplified two-dimensional (2D) example of the centerline extraction algorithm. A, A 2D representation of an edge-detected scan. The borders of the volume are marked. B, The distance transformation of the data in (A), note the pattern visible in the values; high numbers appear near the centerline. C, The gradient of the distance transformation. Note the arrows change direction at the centerline of the shape. D, Centerline identification. The value of the neighborwise dot product is shown with high values represented as dark shades of gray. Note that the lightest values are actually at the centerline. The identified centerline is the region marked with white. Journal of Vascular Surgery 2008 47, 1306-1312DOI: (10.1016/j.jvs.2007.12.046) Copyright © 2008 The Society for Vascular Surgery Terms and Conditions

Fig 3 The analytically-fit centerlines for the aorta and branch vessels. Journal of Vascular Surgery 2008 47, 1306-1312DOI: (10.1016/j.jvs.2007.12.046) Copyright © 2008 The Society for Vascular Surgery Terms and Conditions

Fig 4 The analytically-fit surfaces for the branch vessels. The aorta's surface is omitted for clarity. Journal of Vascular Surgery 2008 47, 1306-1312DOI: (10.1016/j.jvs.2007.12.046) Copyright © 2008 The Society for Vascular Surgery Terms and Conditions

Fig 5 Comparison of manual and automatic intra-renal distance. Journal of Vascular Surgery 2008 47, 1306-1312DOI: (10.1016/j.jvs.2007.12.046) Copyright © 2008 The Society for Vascular Surgery Terms and Conditions

Fig 6 Comparison of manual and automatic intra-renal clock angle. Journal of Vascular Surgery 2008 47, 1306-1312DOI: (10.1016/j.jvs.2007.12.046) Copyright © 2008 The Society for Vascular Surgery Terms and Conditions