Patent ID: 6374131
Filing Date: 2002-04-16
Classification: A61B

Abstract:
A biomagnetism measuring method for measuring, with a plurality of magnetic sensors arranged adjacent a site of interest of a patient, biomagnetism generated from bioelectric currents flowing in the site of interest, and determining the bioelectric currents based on measured biomagnetism information acquired through the measurement, said method comprising the steps of:computing transfer constants indicating degrees by which the biomagnetism is transferred from each particular position in said site of interest to each of said magnetic sensors; regulating a matrix &Ggr; of said transfer constants by adding a predetermined value &lgr;I to said matrix &Ggr;; computing a weight coefficient for each of said magnetic sensors to enhance biomagnetism generated from said particular position, based on virtual biomagnetism information virtually measured by said magnetic sensors and an inverse matrix (&Ggr;+&lgr;I)âˆ’1 of said regulated matrix (&Ggr;+&lgr;I), when a known bioelectric current is set to said particular position; collecting measured biomagnetism information acquired by measuring the biomagnetism generated from said site of interest with said magnetic sensors; computing enhanced biomagnetism information having said biomagnetism generated from said particular position enhanced by applying said weight coefficient to said measured biomagnetism information measured by each of said magnetic sensors; and determining a bioelectric current in said particular position based on said enhanced biomagnetism information.