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Analysis of Coronary Contrast Agent Transport in Bolus-Based Quantitative Myocardial Perfusion MRI Measurements with Computational Fluid Dynamics Simulations

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Functional Imaging and Modelling of the Heart (FIMH 2017)

Part of the book series: Lecture Notes in Computer Science ((LNIP,volume 10263))

Abstract

Aim of the project is the analysis of contrast agent dispersion in bolus-based quantitative myocardial perfusion MRI measurements. 3D-models are extracted from high-resolution cardiovascular cryomicrotome imaging data and subsequently meshed with computational grids. Computational fluid dynamics simulations are performed to solve Navier-Stokes equations for blood flow and the advection-diffusion equation for contrast agent transport to obtain bolus dispersion in epicardial vessels, i.e. bolus duration is increased which results in a systematic underestimation of myocardial blood flow. The dispersion of the injected bolus is observed at different positions along the passage through the cardiovascular vessel geometry and is quantified by means of the variance and transit times of the vascular transport function. We find multi-faceted influences on bolus shape from length of traversed vessels to bifurcation angles and vessel curvature. Therefore, depending on the exact anatomical region systematic errors of blood flow measurements are prone to spatial variance.

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Notes

  1. 1.

    www.vmtk.org

  2. 2.

    www.simvascular.org

  3. 3.

    cfmesh.com, open source meshing library for OpenFOAM.

  4. 4.

    Proprietary meshing software package usable in OpenFOAM.

  5. 5.

    www.openfoam.org

  6. 6.

    https://github.com/Atizar/RapidCFD-dev, OpenFOAM fork for execution on GPU.

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Acknowledgments

We acknowledge financial support of German Ministry of Education and Research (BMBF, grants: 01EO1004, 01E1O1504). We acknowledge University Kaiserslautern for access to HPC-cluster elwetritsch. Special thanks to Dr. Karsten Sommer and Regine Schmidt (University Mainz).

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Correspondence to Johannes Martens .

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Martens, J., Panzer, S., van den Wijngaard, J.P.H.M., Siebes, M., Schreiber, L.M. (2017). Analysis of Coronary Contrast Agent Transport in Bolus-Based Quantitative Myocardial Perfusion MRI Measurements with Computational Fluid Dynamics Simulations. In: Pop, M., Wright, G. (eds) Functional Imaging and Modelling of the Heart. FIMH 2017. Lecture Notes in Computer Science(), vol 10263. Springer, Cham. https://doi.org/10.1007/978-3-319-59448-4_35

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  • DOI: https://doi.org/10.1007/978-3-319-59448-4_35

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