magnetocardiography


Also found in: Wikipedia.

mag·ne·to·car·di·og·ra·phy

(mag'nĕ-tō-kar'dē-og'ră-fē),
Measurement of the magnetic field of the heart, produced by the same ionic currents that generate the electrocardiogram, and showing characteristic P, QRS, T, and U waves.

magnetocardiography

(1) Measurement of the magnetic fields (MFs) produced by electrical activity in the heart using an extremely sensitive device, such as a superconducting quantum interference device (SQUID). Multichannel measurement of the MF with mathematical algorithms allows mapping of the conductivity structure and localisation of arrhythmias in the heart.
(2) The recording of the heart’s magnetic field by a magnetocardiograph, see there.
References in periodicals archive ?
CardioFlux represents a next-gen evolution of magnetocardiography (MCG); its use of optically pumped magnetometers (OPM) eliminates the need for liquid helium cooling, previously an obstacle to widescale commercial adoption of MCG.
A potential near-future application of such systems is a low-cost magnetocardiography (MCG) system using MR sensors [5].
With currently available diagnostic tools, fetal ultrasound cardiography, and fetal magnetocardiography, most of CHB could be successfully diagnosed and comprehensively evaluated prenatally.
Fetal magnetocardiography (fMCG) using superconducting quantum interference device allows accurate assessment of beat-to-beat fetal heart rate variability [2].
Indeed, if one could image action currents using MRI, it would be a fundamental advance that might make magnetocardiography and even much of electrocardiography obsolete.
Further details such as QT interval prolongation and functional AVB due to prolonged ventricular repolarization were accurately diagnosed by fetal magnetocardiography (fMCG).
Fetal magnetocardiography (fMCG) is a noninvasive test that acquires the electrical activity of the fetal heart over the maternal abdomen (1).
"The theory and application of Magnetocardiography", Adv Cardiovasc Physics, 2: 1-67.
Functional Tests EndoPAT (endothelial dysfunction) CAPWA (computerized arterial pulse wave analysis) DTM (digital thermographic monitor) HRV (heart rate variability) EKG and TMT MCG (magnetocardiography) Structural Tests Carotid IMT/Duplex EBT and CT Angiogram (CTA) with CAC scoring Cardiac MRI (CMR) ECHO (Rest and exercise) ABI (Rest and exercise) Other Evaluations Cardiac PET and SPECT IVUS (Intravascular ultrasound) Cardiac Nuclear Studies (MPI) with PET and SPECT Coronary Angiogram Metabolic Factors
This kind of magnetometer is vastly used in magnetocardiography, and it can reach sensitivity of 99 fT/[Hz.sup.1/2] [7].
Magnetocardiography and 32-lead potential mapping: repolarization in normal subjects during pharmacologically induced stress.