ECG Electrode Placements for Magnetohydrodynamic Voltage Suppression
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 vo...
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| Format: | Article |
| Language: | English |
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MDPI AG
2018-07-01
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| Series: | Journal of Imaging |
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| Online Access: | http://www.mdpi.com/2313-433X/4/7/94 |
| _version_ | 1818935473573199872 |
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| author | T. Stan Gregory John N. Oshinski Zion Tsz Ho Tse |
| author_facet | T. Stan Gregory John N. Oshinski Zion Tsz Ho Tse |
| author_sort | T. Stan Gregory |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-12-20T05:20:44Z |
| format | Article |
| id | doaj.art-8c714fde58b948c0a2ce5b0b99c57e12 |
| institution | Directory Open Access Journal |
| issn | 2313-433X |
| language | English |
| last_indexed | 2024-12-20T05:20:44Z |
| publishDate | 2018-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Imaging |
| spelling | doaj.art-8c714fde58b948c0a2ce5b0b99c57e122022-12-21T19:52:01ZengMDPI AGJournal of Imaging2313-433X2018-07-01479410.3390/jimaging4070094jimaging4070094ECG Electrode Placements for Magnetohydrodynamic Voltage SuppressionT. Stan Gregory0John N. Oshinski1Zion Tsz Ho Tse2College of Engineering, University of Georgia, Athens, GA 30602, USADepartment of Radiology and Imaging Sciences, Emory University Hospital, Atlanta, GA 30322, USADepartment of Radiology and Imaging Sciences, Emory University Hospital, Atlanta, GA 30322, USAThis 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.http://www.mdpi.com/2313-433X/4/7/94electrocardiogrammagnetohydrodynamicselectrode placementcardiacMRI |
| spellingShingle | T. Stan Gregory John N. Oshinski Zion Tsz Ho Tse ECG Electrode Placements for Magnetohydrodynamic Voltage Suppression Journal of Imaging electrocardiogram magnetohydrodynamics electrode placement cardiac MRI |
| title | ECG Electrode Placements for Magnetohydrodynamic Voltage Suppression |
| title_full | ECG Electrode Placements for Magnetohydrodynamic Voltage Suppression |
| title_fullStr | ECG Electrode Placements for Magnetohydrodynamic Voltage Suppression |
| title_full_unstemmed | ECG Electrode Placements for Magnetohydrodynamic Voltage Suppression |
| title_short | ECG Electrode Placements for Magnetohydrodynamic Voltage Suppression |
| title_sort | ecg electrode placements for magnetohydrodynamic voltage suppression |
| topic | electrocardiogram magnetohydrodynamics electrode placement cardiac MRI |
| url | http://www.mdpi.com/2313-433X/4/7/94 |
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