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Patient-specific 3D hemodynamics modelling of left coronary artery under hyperemic conditions

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Abstract

The purpose of this study is to investigate the effect of various degrees of percentage stenosis on hemodynamic parameters during the hyperemic flow condition. 3D patient-specific coronary artery models were generated based on the CT scan data using MIMICS-18. Numerical simulation was performed for normal and stenosed coronary artery models of 70, 80 and 90% AS (area stenosis). Pressure, velocity, wall shear stress and fractional flow reserve (FFR) were measured and compared with the normal coronary artery model during the cardiac cycle. The results show that, as the percentage AS increase, the pressure drop increases as compared with the normal coronary artery model. Considerable elevation of velocity was observed as the percentage AS increases. The results also demonstrate a recirculation zone immediate after the stenosis which could lead to further progression of stenosis in the flow-disturbed area. Highest wall shear stress was observed for 90% AS as compared to other models that could result in the rupture of coronary artery. The FFR of 90% AS is found to be considerably low.

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Acknowledgements

The authors would like to thank University of Malaya for funding the project under Grant Nos. RP006A-13AET and PG212-2015B.

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Authors and Affiliations

  1. Department of Mechanical Engineering, University of Malaya, Kuala Lumpur, 50603, Malaysia

    Sarfaraz Kamangar, Irfan Anjum Badruddin, N. Nik-Ghazali, A. Badarudin & T. M. Yunus Khan

  2. Department of Mechanical and Industrial Engineering, Mekelle University, Mekelle, Ethiopia

    Kalimuthu Govindaraju

  3. Institute of Cellular Medicine, Newcastle University, PL68DH, Newcastle upon Tyne, UK

    Girish N. Viswanathan

  4. Dept. of Mechanical and Industrial Engineering, Sultan Qaboos University, 33, Al-khoud, Muscat, 123, Oman

    N. J. Salman Ahmed

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  1. Sarfaraz Kamangar
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  2. Irfan Anjum Badruddin
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  3. Kalimuthu Govindaraju
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  4. N. Nik-Ghazali
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  5. A. Badarudin
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  6. Girish N. Viswanathan
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  7. N. J. Salman Ahmed
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  8. T. M. Yunus Khan
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Correspondence to Sarfaraz Kamangar or Irfan Anjum Badruddin.

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Kamangar, S., Badruddin, I.A., Govindaraju, K. et al. Patient-specific 3D hemodynamics modelling of left coronary artery under hyperemic conditions. Med Biol Eng Comput 55, 1451–1461 (2017). https://doi.org/10.1007/s11517-016-1604-8

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  • DOI: https://doi.org/10.1007/s11517-016-1604-8

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