The picture formation probe (2) with the emitter/the receiver surface (212) with being the calculation method of calculating the actual distance with the target region, the probe as transmission medium and the organization of the organism the wave is given out in the form which passes, is something which is received, the step which calculates the distance correction value which it occurs from the fact where the wave which with the surface and the target region is given out with the aspect when it is separated and by just the organization of the organism and the step which calculates the distance with respect to theory between the target region, is received passes transmission medium and, and, the aforementioned distance correction value with respect to theoryThe step which obtains actual distance by the fact that it applies to distance and, the calculation method of possessing.< Selective figure >Figure 9画像形成探測機(2)のエミッタ/レシーバ面(212)と目標部位との間の実際の距離を求める算出方法であって、探測機は伝達媒体と生体の組織とを通過する形で波を発すると共に受信するものであり、面と目標部位との間が生体の組織だけによって隔てられている場合の面と目標部位の間の理論上の距離を算出するステップと、発せられ受信された波が伝達媒体を通過した事実から生じる距離補正値を算出するステップと、そして、前記距離補正値を理論上の距離に適用することで実際の距離を得るステップと、を有する算出方法。【選択図】図9
