IN-VIVO SIGNAL SOURCE POSITION DETECTION METHOD AND IN-VIVO SIGNAL SOURCE POSITION DETECTION DEVICE

• Main Authors: MATSUMURA JUNICHI, SAKAGAMI YUSUKE, INAKA CHIGUSA, MAKIKAWA MASAAKI
• Format: Patent
• Language: English; Japanese
• Published: 28.02.2019
• Subjects: DIAGNOSIS; HUMAN NECESSITIES; HYGIENE; IDENTIFICATION; MEDICAL OR VETERINARY SCIENCE; SURGERY

To provide an in-vivo signal source position detection method and an in-vivo signal source position detection device capable of accurately detecting the position of an in-vivo signal source using a small number of electrodes.SOLUTION: In an in-vivo signal source position detection method, three electrodes are arranged on a living body surface, and a first external resistor and a second external resistor are connected in parallel between each electrode and a ground potential respectively. A first voltage V(i=1,2,3) generated in each electrode when the first external resistor is connected to each electrode in parallel, and a second voltage V'(i=1,2,3) generated in each electrode when the second external resistor is connected to each electrode in parallel are measured, and a ratio V/V'(i=1,2,3) is calculated from the first voltage Vand the second voltage V'. Based on the three ratios V/V', and position coordinates of the electrodes arranged on the living body surface, the in-vivo signal source position is detected.SELECTED DRAWING: Figure 1 【課題】少ない数の電極を用いて、生体内の信号源の位置を精度よく検出することができる生体内信号源位置検出方法、及び生体内信号源位置検出装置を提供する。【解決手段】本発明の生体内信号源位置検出方法は、生体表面に３つの電極を配置するとともに、各電極とグランド電位との間に、第１の外部抵抗及び第２の外部抵抗をそれぞれ並列接続し、各電極に第１の外部抵抗を並列接続したときに各電極に生じる第１の電圧Ｖｉ（ｉ＝１，２，３）、及び各電極に第２の外部抵抗を並列接続したときに各電極に生じる第２の電圧Ｖ'ｉ（ｉ＝１，２，３）を測定し、第１の電圧Ｖｉ及び第２の電圧Ｖ'ｉから比Ｖｉ／Ｖ'ｉ（ｉ＝１，２，３）を算出し、これら３つの比Ｖｉ／Ｖ'ｉ、及び生体表面に配置された電極の位置座標に基づいて、生体内の信号源の位置を検出する。【選択図】図１