Inhomogeneous human torso model of magnetohydrodynamic blood flow potentials generated in the MR environment

G. M. Nijm, S. Swiryn, Andrew Christian Larson, Alan Varteres Sahakian

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Scopus citations


Magnetohydrodynamic (MHD) voltages resulting from blood flow in a magnetic field contribute to the ECG acquired in the MR environment. These MHD voltages may result in triggering problems for MR image acquisition, since the ECG is typically used for gating. Comsol Multiphysics software was used to model blood flow through the aorta in an inhomogeneous 3D human torso model in a 3.0 Tesla static magnetic field. These voltages were compared with experimentally acquired MHD voltages as well as MHD voltages computed using a simplified torso model. The maximum MHD voltage magnitude was 0.2 mV for the experimental data, 3.04 mV for the simplified model and 0.285 mV for the inhomogeneous torso model. Modeling MHD voltages using an inhomogeneous torso model may aid in optimizing ECG electrode placement for cardiac MRI. In addition, analysis of MHD not only as interference, but also as a physiological signal, may provide blood flow information.

Original languageEnglish (US)
Title of host publicationComputers in Cardiology 2008, CAR
Number of pages4
StatePublished - Dec 1 2008
EventComputers in Cardiology 2008, CAR - Bologna, Italy
Duration: Sep 14 2008Sep 17 2008

Publication series

NameComputers in Cardiology
ISSN (Print)0276-6574


OtherComputers in Cardiology 2008, CAR

ASJC Scopus subject areas

  • Computer Science Applications
  • Cardiology and Cardiovascular Medicine


Dive into the research topics of 'Inhomogeneous human torso model of magnetohydrodynamic blood flow potentials generated in the MR environment'. Together they form a unique fingerprint.

Cite this