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Computational Biomechanics in Thoracic Aortic Dissection: Today’s Approaches and Tomorrow’s Opportunities

  • Computational Biomechanics for Patient-Specific Applications
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Abstract

Dissection of an artery is characterised by the separation of the layers of the arterial wall causing blood to flow within the wall. The incidence rates of thoracic aortic dissection (AoD) are increasing, despite falls in virtually all other manifestations of cardiovascular disease, including abdominal aortic aneurysm (AAA). Dissections involving the ascending aorta (Type A) are a medical emergency and require urgent surgical repair. However, dissections of the descending aorta (Type B) are less lethal and require different clinical management whereby the patient may not be offered surgery unless complicating factors are present. But how do we tell if a patient will develop a complication later on? Currently, there is no consensus and the evidence base is limited. There is an opportunity for computational biomechanics to help clinicians decide as to which cases to repair and which to manage with blood pressure control. In this review article, we look at AoD from both the clinical and biomechanical perspective and discuss some of the recent computational studies of both Type A and B AoD. We then focus more on Type B where the real opportunity for patient-specific modelling exists. Finally, we look ahead at some of the promising areas of research that may help clinicians improve the decision-making process surrounding Type B AoD.

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Acknowledgments

The authors would like to thank Eileen Wiryadinata, Adam Byass, Grand Joldes and Adam Wittek from The University of Western Australia, and Peter Hoskins, David Newby, Marc Dweck and Scott Semple from The University of Edinburgh. We would also like to thank our funding sources; The University of Western Australia and the National Health and Medical Research Council (Grants: APP1063986, APP1083572).

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The authors have nothing to declare.

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Authors and Affiliations

  1. Vascular Engineering, Intelligent Systems for Medicine Laboratory, School of Mechanical and Chemical Engineering, The University of Western Australia, Perth, Australia

    Barry J. Doyle & Paul E. Norman

  2. Centre for Cardiovascular Science, The University of Edinburgh, Edinburgh, UK

    Barry J. Doyle

  3. School of Surgery, The University of Western Australia, Perth, Australia

    Paul E. Norman

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  1. Barry J. Doyle
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Correspondence to Barry J. Doyle.

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Associate Editor Karol Miller oversaw the review of this article.

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Doyle, B.J., Norman, P.E. Computational Biomechanics in Thoracic Aortic Dissection: Today’s Approaches and Tomorrow’s Opportunities. Ann Biomed Eng 44, 71–83 (2016). https://doi.org/10.1007/s10439-015-1366-8

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