2008
DOI: 10.1109/tbme.2008.919868
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Simulation of Elevated T-Waves of an ECG Inside a Static Magnetic Field (MRI)

Abstract: In MRI, the flow of blood in the patient is subjected to a strong static magnetic field (B(0)). 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… Show more

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Cited by 27 publications
(34 citation statements)
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“…A method was developed to measure MFD-induced voltage based on discretization of the aortic arch and measuring the blood flow profile in the aorta (Gupta et al 2008). The results were compared to the ECG signals measured in humans in the bore of 1.5 T imaging magnet (1.5 T SMF alone) (Gupta et al 2008). The computed ECG signals at the 12 leads are very similar to the measured values (Gupta et al 2008).…”
Section: Introductionmentioning
confidence: 74%
See 3 more Smart Citations
“…A method was developed to measure MFD-induced voltage based on discretization of the aortic arch and measuring the blood flow profile in the aorta (Gupta et al 2008). The results were compared to the ECG signals measured in humans in the bore of 1.5 T imaging magnet (1.5 T SMF alone) (Gupta et al 2008). The computed ECG signals at the 12 leads are very similar to the measured values (Gupta et al 2008).…”
Section: Introductionmentioning
confidence: 74%
“…Concerning the relationship between BP and biochemical stressors, it is suggested the positive interaction between microvascular oxidative stressors and hypertension (Suzuki et al 1995;DeLano et al 2005DeLano et al , 2006. Gupta et al (2008) presented a mathematical approach of computing the elevation of the T-wave of an electrocardiography (ECG) signal in an MRI bore caused due to the flow of blood in the aorta. The elevation was computed mathematically using the equations of magneto-fluid dynamics (MFD) (Gupta et al 2008).…”
Section: Introductionmentioning
confidence: 99%
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“…An accurate model of the aortic arch was incorporated into the thoracic cavity based on simulations of the MHD effect taken from the literature [19,20]. Standardized locations for ECGs based on subject anthropometry [21,22] were used to select nodal locations on the thorax for the standard ECG electrode positions [23] (Table 1).…”
Section: Mhd-vector Modelmentioning
confidence: 99%