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首页> 外文期刊>Physics in medicine and biology. >Development and validation of a magneto-hydrodynamic solver for blood flow analysis.
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Development and validation of a magneto-hydrodynamic solver for blood flow analysis.

机译：开发和验证用于血流分析的磁流体动力学求解器。

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The objective of this study was to develop a numerical solver to calculate the magneto-hydrodynamic (MHD) signal produced by a moving conductive liquid, i.e. blood flow in the great vessels of the heart, in a static magnetic field. We believe that this MHD signal is able to non-invasively characterize cardiac blood flow in order to supplement the present non-invasive techniques for the assessment of heart failure conditions. The MHD signal can be recorded on the electrocardiogram (ECG) while the subject is exposed to a strong static magnetic field. The MHD signal can only be measured indirectly as a combination of the heart's electrical signal and the MHD signal. The MHD signal itself is caused by induced electrical currents in the blood due to the moving of the blood in the magnetic field. To characterize and eventually optimize MHD measurements, we developed a MHD solver based on a finite element code. This code was validated against literature, experimental and analytical data. The validation of the MHD solver shows good agreement with all three reference values. Future studies will include the calculation of the MHD signals for anatomical models. We will vary the orientation of the static magnetic field to determine an optimized location for the measurement of the MHD blood flow signal.
机译：这项研究的目的是开发一种数值解算器，以计算由运动的导电液体（即心脏大血管中的血液在静磁场中流动）产生的磁流体动力学（MHD）信号。我们相信，该MHD信号能够无创地表征心脏血流，以补充目前用于评估心力衰竭状况的无创技术。当对象暴露于强静磁场下时，MHD信号可以记录在心电图（ECG）上。 MHD信号只能作为心脏电信号和MHD信号的组合间接测量。由于血液在磁场中的移动，MHD信号本身是由血液中的感应电流引起的。为了表征和最终优化MHD测量，我们基于有限元代码开发了MHD求解器。该代码已针对文献，实验和分析数据进行了验证。 MHD求解器的验证与所有三个参考值均显示出良好的一致性。未来的研究将包括为解剖模型计算MHD信号。我们将改变静磁场的方向，以确定用于测量MHD血流信号的最佳位置。

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