1987
DOI: 10.1097/00004424-198701000-00002
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Optimizing Electrocardiograph Electrode Placement for Cardiac-Gated Magnetic Resonance Imaging

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Cited by 76 publications
(38 citation statements)
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“…The resultant distortion of the surface ECG was predominantly within the T wave and has been attributed to a potential generated by blood flow in the aorta in the presence of the magnetic field. 11 The temporal distribution of the interfering signal component probably would not compromise cardiac rhythm analysis or analysis of p-wave or QRS morphology. Intracardiac recordings with conventional filter settings were qualitatively unaffected by significant distortion in the presence of the magnetic field.…”
Section: Discussionmentioning
confidence: 99%
“…The resultant distortion of the surface ECG was predominantly within the T wave and has been attributed to a potential generated by blood flow in the aorta in the presence of the magnetic field. 11 The temporal distribution of the interfering signal component probably would not compromise cardiac rhythm analysis or analysis of p-wave or QRS morphology. Intracardiac recordings with conventional filter settings were qualitatively unaffected by significant distortion in the presence of the magnetic field.…”
Section: Discussionmentioning
confidence: 99%
“…According to Faraday's law, a voltage is induced across a column of conducting fluid (in this case blood) flowing through a magnetic field. The changes are maximal when the fluid flow is at 90" to the field, which occurs in a supine patient when blood flows through the transverse aorta, hence the changes are principally in leads I, 11, V, and V, [45]. These superimposed potentials are greatest in the early T waves, and late ST segments and can mimic the ECG changes of conditions such as hyperkalaemia and pericarditis (Fig.…”
Section: Ecgmentioning
confidence: 99%
“…The recommendations of Wendt et al [47] and Dimick et al [45] are summarised here: ( I ) braid or twist the leads to reduce the loops across which potential differences can be generated; (2) place the ECG electrodes as close as possible to the centre of the magnetic field since the gradients should be changing least a t this point; (3) …”
Section: Ecgmentioning
confidence: 99%
“…Various approaches have been proposed to assess, cancel, correct for, bypass, or extract MHD blood flow potential induced artifacts from the surface ECG. These efforts include the assessment of MHDinduced ECG distortions in the fringe field of an MR magnet (12), optimization of ECG electrode placement (13), R-wave detection algorithms based on the vector cardiogram (14), alternative triggering/gating techniques that are less sensitive or even immune to interference with EMF, including self-gating techniques (11,15,16), and sophisticated ECG signal processing (17,18).…”
mentioning
confidence: 99%