European Journal of Vascular & Endovascular Surgery
Volume 40, Issue 3 , Pages 332-339 , September 2010

A Computational Study of the Magnitude and Direction of Migration Forces in Patient-specific Abdominal Aortic Aneurysm Stent-Grafts

  • D.S. Molony

      Affiliations

    • Centre for Applied Biomedical Engineering Research (CABER), Department of Mechanical and Aeronautical Engineering and Materials and Surface Science Institute, University of Limerick, Ireland
    • ,
  • E.G. Kavanagh

      Affiliations

    • Department of Vascular Surgery, Mid-Western Regional Hospital, Limerick, Ireland
    • ,
  • P. Madhavan

      Affiliations

    • Department of Vascular and Endovascular Surgery, St. James Hospital, Dublin, Ireland
    • ,
  • M.T. Walsh

      Affiliations

    • Centre for Applied Biomedical Engineering Research (CABER), Department of Mechanical and Aeronautical Engineering and Materials and Surface Science Institute, University of Limerick, Ireland
    • ,
  • T.M. McGloughlin

      Affiliations

    • Centre for Applied Biomedical Engineering Research (CABER), Department of Mechanical and Aeronautical Engineering and Materials and Surface Science Institute, University of Limerick, Ireland
    • Corresponding Author InformationCorresponding author. Tel.: +353 61 202217; fax: +353 61 202944.

Received 9 October 2009 ,Accepted 3 June 2010.

  • Image Result

    Aneurysm geometry from all 10 patients.

    Aneurysm geometry from all 10 patients.

  • Image Result

    Method of defining the aneurysm angulation; α1 = anterior–posterior neck angle; α2 = lateral neck angle; β1 = left iliac leg angle; β2 = right iliac leg angle.

    Method of defining the aneurysm angulation; α1 = anterior–posterior neck angle; α2 = lateral neck angle; β1 = left iliac leg angle; β2 = right iliac leg angle.

  • Image Result

    (a) Flow rate waveform (b) Pressure waveform (c) Sectioned view of patient 2 (d) Sectioned view of patient 5. Patient 2 has an aorto uni-iliac device while patient 5 has a bifurcated device. Both pati

    (a) Flow rate waveform (b) Pressure waveform (c) Sectioned view of patient 2 (d) Sectioned view of patient 5. Patient 2 has an aorto uni-iliac device while patient 5 has a bifurcated device. Both patients are viewed from the posterior. ILT in the cavity has been removed for clarity.

  • Image Result
    Direction of drag forces showing the (a) x, y, z and resultant components for patient 6 and (b) Resultant force vectors for all patients.

    Direction of drag forces showing the (a) x, y, z and resultant components for patient 6 and (b) Resultant force vectors for all patients.

  • Image Result
    Relationship between the anterior–posterior neck angle and the resultant drag force.

    Relationship between the anterior–posterior neck angle and the resultant drag force.

  • Image Result
    Relationship between the inlet to outlet area ratio and the z-component of the drag force.

    Relationship between the inlet to outlet area ratio and the z-component of the drag force.

  • Image Result
    Effect of aortic pulse duration and hypertension on drag force for patient 1 (a) Pressure waveforms (b) Resultant drag force.

    Effect of aortic pulse duration and hypertension on drag force for patient 1 (a) Pressure waveforms (b) Resultant drag force.

PII: S1078-5884(10)00346-1

doi: 10.1016/j.ejvs.2010.06.001

European Journal of Vascular & Endovascular Surgery
Volume 40, Issue 3 , Pages 332-339 , September 2010

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