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Literature DB >> 4733699

Model studies of the magnetocardiogram.

Abstract

A general expression is developed for the quasi-static magnetic field outside an inhomogeneous nonmagnetic volume conductor containing internal electromotive forces. Multipole expansions for both the electric and magnetic fields are derived. It is shown that the external magnetic field vanishes under conditions of axial symmetry. The magnetic field for a dipole current source in a sphere is derived, and the effect of an eccentric spherical inhomogeneity is analyzed. Finally the magnetic dipole moment is calculated for a current dipole in a conducting prolate spheroid.

Entities: Chemical

Mesh：

Year: 1973 PMID： 4733699 PMCID： PMC1484372 DOI： 10.1016/S0006-3495(73)86034-5

Source DB: PubMed Journal: Biophys J ISSN： 0006-3495 Impact factor: 4.033

1 in total

1. The potential of a general dipole in a homogeneous conducting prolate spheroid.

Authors: G C YEH; J MARTINEK
Journal: Ann N Y Acad Sci Date: 1957-08-09 Impact factor: 5.691

1 in total

28 in total

5. Distortion of magnetic evoked fields and surface potentials by conductivity differences at boundaries in brain tissue.

Authors: J C Huang; C Nicholson; Y C Okada
Journal: Biophys J Date: 1990-06 Impact factor: 4.033

9. Prediction on affected upper extremity function in hemiplegic patients after thalamic hemorrhage using somatosensory evoked magnetic fields.

Authors: Hideki Yoshida; Takeo Kondo; Nobukazu Nakasato
Journal: J Jpn Phys Ther Assoc Date: 2006

10. A dipole model for spreading cortical depression.

Authors: N Tepley; R S Wijesinghe
Journal: Brain Topogr Date: 1996 Impact factor: 3.020

Model studies of the magnetocardiogram.

1. The potential of a general dipole in a homogeneous conducting prolate spheroid.

1. Source cancellation profiles of electroencephalography and magnetoencephalography.

2. Sensitivity of MEG and EEG to source orientation.

3. The advantage of combining MEG and EEG: comparison to fMRI in focally stimulated visual cortex.

4. Mathematical modelling for biomagnetic localization.

5. Distortion of magnetic evoked fields and surface potentials by conductivity differences at boundaries in brain tissue.

6. Mode level cognitive subtraction (MLCS) quantifies spatiotemporal reorganization in large-scale brain topographies.

7. Effect of torso geometry on the magnetocardiogram.

8. Computer model studies of the magnetocardiogram.

9. Prediction on affected upper extremity function in hemiplegic patients after thalamic hemorrhage using somatosensory evoked magnetic fields.

10. A dipole model for spreading cortical depression.