PROBLEM TO BE SOLVED: To provide a simple, safe and highly accurate apparatus for creating distribution image of electric conductivity and a visceral fat measuring apparatus by achieving impedance CT method to measure biological impedance of a subject with high accuracy.SOLUTION: Two pairs of electrode groups (51a and 51b) are located in a circular pattern on the outer periphery of the subject to be measured. Electric current is applied between two electrodes (Ai and Ai+2) which are sequentially selected from a first electrode group (51a), and potential differences between adjacent electrodes at the electrodes (Bi and Bi+2) corresponding to the two electrodes on which the electric current is applied among the remaining electrodes (A1, ..., Ai-1, Ai+1, Ai+3, ..., AN) of the first electrode group and a second electrode group (52b) are measured sequentially. Since the potentials at all electrode locations are measured, measurement error is compensated and highly accurate biological impedance measurement can be achieved.COPYRIGHT: (C)2012,JPO&INPIT【課題】測定対象の生体インピーダンスを高精度で測定するインピーダンスCT法を実現し、簡便、安全かつ高精度な導電率分布画像の生成装置および内臓脂肪測定装置を提供する。【解決手段】測定対象の外周上に環状に2組の電極群(51a,51b)が配置され、第1の電極群(51a)のうち順次選択される2つの電極間(Ai,Ai+2)に電流が印加され、第1の電極群の残りの電極(A1,・・・,Ai-1,Ai+1,Ai+3,・・・,AN)および第2の電極群(52b)のうち前記電流が印加される2つの電極に対応づけられる電極(Bi,Bi+2)における隣接電極の間の電位差が順次測定される。すべての電極位置における電位が測定されるため測定系の誤差が補償されて精度の高い生体インピーダンス測定が可能となる。【選択図】図2
