PROBLEM TO BE SOLVED: To uniquely obtain an absolute value of an electrical characteristic value locally suitable for an actual measurement value.SOLUTION: The electrical impedance tomographic image device of a living body comprises: a mathematical model creating unit 34 which varies the electrical characteristic value of each mesh at which a cross section of a living body is divided into a plurality of pieces into a plurality of values, and creates a mathematical model which is not smaller than operable three dimensions a constant current applying unit 21 a calculator 35 which varies the electrical characteristic value of an optional mesh into a plurality of values (n) by using the mathematical model, and calculates a plurality of generated numbers (n) of first potential differences when applied with a constant current a measuring means 22 which actually measures second potential differences generated at output paired electrodes a calculator 37 which calculates the plurality of electrical characteristic values corresponding to each pigment by using the plurality of numbers (n) of the first potential differences and the second potential differences a determination unit 38 which estimates and determines the absolute value of the most suitable electrical characteristic value in each pigment from the electrical characteristic values and a tomographic image display controller 39 which displays a tomographic image on the basis of the most suitable electrical characteristic value.COPYRIGHT: (C)2012,JPO&INPIT【課題】、実測値に対応する局所的な最適な電気的特性値の絶対値を一意に得る。【解決手段】生体断面を多数に分割した各メッシュの電気的特性値を複数に変化させて演算可能な3次元以上の数学モデルを作成する数学モデル作成手段34と、定電流印加手段21と、数学モデルを用いて任意のメッシュの電気的特性値を複数(n)変化させ、定電流を印加した場合に、発生する複数(n)の第一の電位差を算出する算出手段35と、入力ペア電極に定電流を印加した場合に、出力ペア電極に発生する第二の電位差を実測する測定手段22と、複数(n)の第一の電位差と第二の電位差を用いて、各画素に対応した複数の電気的特性値を算出する算出手段37と、電気的特性値から各画素における最適な電気的特性値の絶対値を推定し決定する決定手段38と、最適な電気的特性値に基づき断層画像を表示する断層画像表示制御手段39とを備える。【選択図】図1
