Title

Simulation Of Elevated T-Waves Of An Ecg Inside A Static Magnetic Field (Mri)

Keywords

ECG; MRI; Simulation package; ST segment; T-wave elevation

Abstract

In MRI, the flow of blood in the patient is subjected to a strong static magnetic field (B0). The movement of charge carriers in a magnetic field causes a magnetofluid dynamic (MFD) effect that induces a voltage across the artery. This induced voltage distorts the ECG signal of the patient and appears as an elevation of the T-wave of the ECG signal. Flow of blood through the aortic arch is perpendicular to the magnetic field and coincides with the occurrence of the T-wave of the ECG. Based on these facts, it is proposed that the elevation in the T-wave occurs because of the voltage induced across the aortic arch. In this paper, the elevation is computed mathematically using the equations of MFD. A method is developed to measure this induced voltage based on discretization of the aortic arch and measuring the blood flow profile in the aorta. The results are compared to the ECG signals measured in humans in the bore of 1.5 T imaging magnet. The computed ECG signals at the 12 leads are very similar to the measured values. © 2008 IEEE.

Publication Date

7-1-2008

Publication Title

IEEE Transactions on Biomedical Engineering

Volume

55

Issue

7

Number of Pages

1890-1896

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1109/TBME.2008.919868

Socpus ID

45749142880 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/45749142880

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