Next Article in Journal
An Ensemble SSL Algorithm for Efficient Chest X-Ray Image Classification
Previous Article in Journal
Detection of Moving Objects
Open AccessArticle

ECG Electrode Placements for Magnetohydrodynamic Voltage Suppression

1
College of Engineering, University of Georgia, Athens, GA 30602, USA
2
Department of Radiology and Imaging Sciences, Emory University Hospital, Atlanta, GA 30322, USA
*
Author to whom correspondence should be addressed.
J. Imaging 2018, 4(7), 94; https://doi.org/10.3390/jimaging4070094
Received: 28 June 2018 / Accepted: 13 July 2018 / Published: 17 July 2018
This study aims to investigate a set of electrocardiogram (ECG) electrode lead locations to improve the quality of four-lead ECG signals acquired during magnetic resonance imaging (MRI). This was achieved by identifying electrode placements that minimized the amount of induced magnetohydrodynamic voltages (VMHD) in the ECG signals. Reducing VMHD can improve the accuracy of QRS complex detection in ECG as well as heartbeat synchronization between MRI and ECG during the acquisition of cardiac cine. A vector model based on thoracic geometry was developed to predict induced VMHD and to optimize four-lead ECG electrode placement for the purposes of improved MRI gating. Four human subjects were recruited for vector model establishment (Group 1), and five human subjects were recruited for validation of VMHD reduction in the proposed four-lead ECG (Group 2). The vector model was established using 12-lead ECG data recorded from Group 1 of four healthy subjects at 3 Tesla, and a gradient descent optimization routine was utilized to predict optimal four-lead ECG placement based on VMHD vector alignment. The optimized four-lead ECG was then validated in Group 2 of five healthy subjects by comparing the standard and proposed lead placements. A 43.41% reduction in VMHD was observed in ECGs using the proposed electrode placement, and the QRS complex was preserved. A VMHD-minimized electrode placement for four-lead ECG gating was presented and shown to reduce induced magnetohydrodynamic (MHD) signals, potentially allowing for improved cardiac MRI physiological monitoring. View Full-Text
Keywords: electrocardiogram; magnetohydrodynamics; electrode placement; cardiac; MRI electrocardiogram; magnetohydrodynamics; electrode placement; cardiac; MRI
Show Figures

Graphical abstract

MDPI and ACS Style

Gregory, T.S.; Oshinski, J.N.; Tse, Z.T.H. ECG Electrode Placements for Magnetohydrodynamic Voltage Suppression. J. Imaging 2018, 4, 94.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Search more from Scilit
 
Search
Back to TopTop