Presentation is loading. Please wait.

Presentation is loading. Please wait.

Impact of calcification and intraluminal thrombus on the computed wall stresses of abdominal aortic aneurysm  Zhi-Yong Li, PhD, Jean U-King-Im, MRCS,

Published byHannah Walters Modified over 6 years ago

Similar presentations

Presentation on theme: "Impact of calcification and intraluminal thrombus on the computed wall stresses of abdominal aortic aneurysm  Zhi-Yong Li, PhD, Jean U-King-Im, MRCS,"— Presentation transcript:

1 Impact of calcification and intraluminal thrombus on the computed wall stresses of abdominal aortic aneurysm  Zhi-Yong Li, PhD, Jean U-King-Im, MRCS, FRCR, Tjun Y. Tang, MRCS, Edmund Soh, MRCP, FRCR, Teik Choon See, FRCR, Jonathan H. Gillard, MD, FRCR  Journal of Vascular Surgery  Volume 47, Issue 5, Pages (May 2008) DOI: /j.jvs Copyright © 2008 The Society for Vascular Surgery Terms and Conditions

2 Fig 1 A, Cross-sectional computed tomography image shows an abdominal aortic aneurysm. B, Segmentation of calcification, intraluminal thrombosis, arterial wall, and lumen. Journal of Vascular Surgery  , DOI: ( /j.jvs ) Copyright © 2008 The Society for Vascular Surgery Terms and Conditions

3 Fig 2 Three-dimensional model derived from the computed tomography reconstruction of the abdominal aortic aneurysm (AAA). A, Reconstruction of the AAA shows the AAA components (calcification, intraluminal thrombus, arterial wall, and lumen). B, Three-dimensional mesh of the AAA model. C, Longitudinal cross-section of the AAA model shows the detail meshes of the AAA components. Journal of Vascular Surgery  , DOI: ( /j.jvs ) Copyright © 2008 The Society for Vascular Surgery Terms and Conditions

4 Fig 3 Three-dimensional wall stress distributions among the three abdominal aortic aneurysm models are compared: (A) unaltered model, (B) no-calcification model, (C) no-intraluminal thrombus (ILT) model. Journal of Vascular Surgery  , DOI: ( /j.jvs ) Copyright © 2008 The Society for Vascular Surgery Terms and Conditions

5 Fig 4 Box and whisker plot of maximum von Mises stresses within the unaltered, no-calcification, and no-intraluminal thrombosis models of abdominal aortic aneurysms. The horizontal line in the middle of each box indicates the median; the top and bottom borders of the box mark the 75th and 25th percentiles, respectively. The whiskers mark the 90th and 10th percentiles. The circle represents an outlier. Journal of Vascular Surgery  , DOI: ( /j.jvs ) Copyright © 2008 The Society for Vascular Surgery Terms and Conditions

6 Fig 5 Relationship of abdominal aortic aneurysm components to maximum von Mises stresses. A, Correlation of stress (in kPa) with percentage volume of calcification. The correlation between percentage volume of calcification and stress was not significant (P =.450). B, Correlation of stress with percentage volume of intraluminal thrombus (ILT). There was a significant moderate negative correlation between stress and percentage volume of ILT (r = −0.56; P =.011). Journal of Vascular Surgery  , DOI: ( /j.jvs ) Copyright © 2008 The Society for Vascular Surgery Terms and Conditions

7 Fig 6 Relationship of abdominal aortic aneurysm (AAA) components to maximum ad minimum stresses. A, Correlation between changes in stress when calcification was replaced within arterial wall and percentage volume of calcification in unaltered AAA. A significant correlation was found (r = 0.685; P = .001). B, Correlation between changes in stress with and without intraluminal thrombosis (ILT) and percentage volume of ILT in unaltered AAA. This correlation was also significant (r = 0.863; P < .001). Journal of Vascular Surgery  , DOI: ( /j.jvs ) Copyright © 2008 The Society for Vascular Surgery Terms and Conditions

Download ppt "Impact of calcification and intraluminal thrombus on the computed wall stresses of abdominal aortic aneurysm  Zhi-Yong Li, PhD, Jean U-King-Im, MRCS,"

Similar presentations

Feasibility of wall stress analysis of abdominal aortic aneurysms using three- dimensional ultrasound  Annette M. Kok, MSc, V. Lai Nguyen, MD, Lambert.

Feasibility of wall stress analysis of abdominal aortic aneurysms using three- dimensional ultrasound  Annette M. Kok, MSc, V. Lai Nguyen, MD, Lambert.
The mechanical role of thrombus on the growth rate of an abdominal aortic aneurysm  Lambert Speelman, MSc, Geert Willem H. Schurink, PhD, MD, E. Marielle.

The mechanical role of thrombus on the growth rate of an abdominal aortic aneurysm  Lambert Speelman, MSc, Geert Willem H. Schurink, PhD, MD, E. Marielle.
Inelastic bandages maintain their hemodynamic effectiveness over time despite significant pressure loss  Giovanni Mosti, MD, Hugo Partsch, MD, PhD  Journal.

Inelastic bandages maintain their hemodynamic effectiveness over time despite significant pressure loss  Giovanni Mosti, MD, Hugo Partsch, MD, PhD  Journal.
Mark J.W. Koelemay, MD, PhD  Journal of Vascular Surgery 

Mark J.W. Koelemay, MD, PhD  Journal of Vascular Surgery 
Visuospatial and psychomotor aptitude predicts endovascular performance of inexperienced individuals on a virtual reality simulator  Isabelle Van Herzeele,

Visuospatial and psychomotor aptitude predicts endovascular performance of inexperienced individuals on a virtual reality simulator  Isabelle Van Herzeele,
Reply Journal of Vascular Surgery

Reply Journal of Vascular Surgery
Multidimensional growth measurements of abdominal aortic aneurysms

Multidimensional growth measurements of abdominal aortic aneurysms
A new imaging method for assessment of aortic dissection using four-dimensional phase contrast magnetic resonance imaging  Rachel E. Clough, MBBS, BSc,

A new imaging method for assessment of aortic dissection using four-dimensional phase contrast magnetic resonance imaging  Rachel E. Clough, MBBS, BSc,
Skills training after night shift work enables acquisition of endovascular technical skills on a virtual reality simulator  Peter A. Naughton, MD, Rajesh.

Skills training after night shift work enables acquisition of endovascular technical skills on a virtual reality simulator  Peter A. Naughton, MD, Rajesh.
Feasibility of wall stress analysis of abdominal aortic aneurysms using three- dimensional ultrasound  Annette M. Kok, MSc, V. Lai Nguyen, MD, Lambert.

Feasibility of wall stress analysis of abdominal aortic aneurysms using three- dimensional ultrasound  Annette M. Kok, MSc, V. Lai Nguyen, MD, Lambert.
Deep venous thrombosis after repair of nonruptured abdominal aneurysm

Deep venous thrombosis after repair of nonruptured abdominal aneurysm
Volume growth of abdominal aortic aneurysms correlates with baseline volume and increasing finite element analysis-derived rupture risk  Moritz Lindquist.

Volume growth of abdominal aortic aneurysms correlates with baseline volume and increasing finite element analysis-derived rupture risk  Moritz Lindquist.
Plasma thrombin-antithrombin complex, prothrombin fragments 1 and 2, and D-dimer levels are elevated after endovascular but not open repair of infrarenal.

Plasma thrombin-antithrombin complex, prothrombin fragments 1 and 2, and D-dimer levels are elevated after endovascular but not open repair of infrarenal.
The mechanical role of thrombus on the growth rate of an abdominal aortic aneurysm  Lambert Speelman, MSc, Geert Willem H. Schurink, PhD, MD, E. Marielle.

The mechanical role of thrombus on the growth rate of an abdominal aortic aneurysm  Lambert Speelman, MSc, Geert Willem H. Schurink, PhD, MD, E. Marielle.
Asymmetric aortic expansion of the aneurysm neck: Analysis and visualization of shape changes with electrocardiogram-gated magnetic resonance imaging 

Asymmetric aortic expansion of the aneurysm neck: Analysis and visualization of shape changes with electrocardiogram-gated magnetic resonance imaging 
Amir H. Malkawi, MRCS, Robert J

Amir H. Malkawi, MRCS, Robert J
The abdominal aortic aneurysm sac after endoluminal exclusion: A medium-term morphologic follow-up based on volumetric technology  R. Singh-Ranger, BSc,

The abdominal aortic aneurysm sac after endoluminal exclusion: A medium-term morphologic follow-up based on volumetric technology  R. Singh-Ranger, BSc,
Relative importance of aneurysm diameter and body size for predicting abdominal aortic aneurysm rupture in men and women  Ruby C. Lo, MD, Bing Lu, MD,

Relative importance of aneurysm diameter and body size for predicting abdominal aortic aneurysm rupture in men and women  Ruby C. Lo, MD, Bing Lu, MD,
C-reactive protein (CRP) elevation in patients with abdominal aortic aneurysm is independent of the most important CRP genetic polymorphism  Stephen A.

C-reactive protein (CRP) elevation in patients with abdominal aortic aneurysm is independent of the most important CRP genetic polymorphism  Stephen A.
Quantification of abdominal aortic aneurysm stiffness using magnetic resonance elastography and its comparison to aneurysm diameter  Arunark Kolipaka,

Quantification of abdominal aortic aneurysm stiffness using magnetic resonance elastography and its comparison to aneurysm diameter  Arunark Kolipaka,

Similar presentations

Ads by Google