Title :
Quasi-static electric field in a cylindrical volume conductor induced by external coils [human body application]
Author :
Esselle, Karu P. ; Stuchly, Maria A.
Author_Institution :
Dept. of Electron., Macquarie Univ., Sydney, NSW, Australia
Abstract :
An expansion technique based on modified Bessel functions is used to obtain an analytical solution for the electric held induced in a homogeneous cylindrical volume conductor by an external coil. The current in the coil is assumed to be changing slowly so that quasi-static conditions can be justified. Valid for any coil type, this solution is ideal for fast computation of the induced electric held at a large number of points. Efficient implementation of this method in a computer code is described and numerical results are presented for a perpendicular circular coil and a tangential double-square coil.
Keywords :
bioelectric phenomena; biological effects of fields; physiological models; analytical solution; coil current; computer code; cylindrical volume conductor; expansion technique; external coils; human body; induced fields; modified Bessel functions; perpendicular circular coil; quasistatic electric field; tangential double-square coil; Biomedical computing; Biomedical equipment; Coils; Conductors; Cost accounting; Humans; Magnetic analysis; Magnetic fields; Magnetic resonance imaging; Medical services; Electric Conductivity; Electromagnetic Fields; Models, Neurological;
Journal_Title :
Biomedical Engineering, IEEE Transactions on
