Magnetohydrodynamic Voltage Recorder for Comparing Peripheral Blood Flow

Blood flow is a clinical metric for monitoring of cardiovascular diseases but current measurements methods are costly or uncomfortable for patients. It was shown that the interaction of the magnetic field ( B 0 ) during MRI and blood flow in the body, through the magnetohydrodynamic (MHD) effect, pr...

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Bibliographic Details
Published in:Annals of biomedical engineering 2017-10, Vol.45 (10), p.2298-2308
Main Authors: Wu, Kevin J., Gregory, T. Stan, Lastinger, Michael C., Murrow, Jonathan R., Tse, Zion Tsz Ho
Format: Article
Language:English
Subjects:
Biochemistry
Biological and Medical Physics
Biomedical and Life Sciences
Biomedical Engineering and Bioengineering
Biomedicine
Biophysics
Blood circulation
Blood flow
Blood Flow Velocity
Cardiovascular diseases
Classical Mechanics
Echocardiography
EKG
Electrocardiography
Electrocardiography - instrumentation
Electrocardiography - methods
Fluid dynamics
Fluid flow
Heart diseases
Humans
Magnetic fields
Magnetic resonance imaging
Magnetohydrodynamics
Magnetometry - instrumentation
Magnetometry - methods
Measurement methods
Monitoring
Neodymium
Peripheral blood
Portable equipment
Reproducibility
Smartphone
Smartphones
Stroke volume
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Summary:Blood flow is a clinical metric for monitoring of cardiovascular diseases but current measurements methods are costly or uncomfortable for patients. It was shown that the interaction of the magnetic field ( B 0 ) during MRI and blood flow in the body, through the magnetohydrodynamic (MHD) effect, produce voltages ( V MHD ) observable through intra-MRI electrocardiography (ECG), which are correlated with regional blood flow. This study shows the reproducibility of V MHD outside the MRI and its application in a portable flow monitoring device. To recreate this interaction outside the MRI, a static neodymium magnet (0.4T) was placed in between two electrodes to induce the V MHD in a single lead ECG measurement. V MHD was extracted, and integrated over to obtain a stroke volume metric. A smartphone-enabled device utilizing this interaction was developed in order to create a more accessible method of obtaining blood flow measurements. The portable device displayed a
ISSN:0090-6964
1573-9686
DOI:10.1007/s10439-017-1878-5