It is reported that magnetic stimulation has good efficacy in treating urinary incontinence. A current pulse is passed through a coil near the body, and the resulting time dependent magnetic field induces an electric field in the body. Magnetic stimulation offers two main advantages over electrical stimulation: it can be applied without removal of clothes, and it involves little pain. However, the distribution of current in the living body is not clearly known. Authors therefore attempted to make a computer simulation model of the female abdomen and simulate the distribution of induced current on the basis of tissue conductivity. This paper reports making a computer simulation model and analyzing the distribution of induced current by time varying magnetic fields. The authors also compare current distributions in the living body induced by different coil configurations and discuss which method of stimulation is the most efficient.
