Influence of the MHD effect on 12-lead and 3-lead ECGs recorded in 1T to 7T MRI scanners

This ECG dataset was acquired in different magnetic resonance imaging (MRI)
scanners to study the magnetohydrodynamic (MHD) effect. The MHD effect, which
is caused an interaction of the MRI's strong static magnetic field and the
patient's blood flow, superimposes the ECG signal during MRI exams. As a
consequence, a detailed morphological analysis of the ECG (e.g. of the P wave,
ST segment or the T wave) is prevented. The MHD effect might be a useful
signal for extracting further physiological information, e.g. about blood flow
or stroke volume. The 12-lead and 3-lead ECG signals were acquired from
different subjects in various MRI scanners with magnetic field strengths
ranging from 1T up to 7T. All signals were manually annotated.