PROBLEM TO BE SOLVED: To provide an organ tracking device that can track the movement and deformation of organs without burdening patients and without interfering with surgery, an organ tracking method, and an organ tracking program.SOLUTION: An organ tracking device 10 includes an imaging unit 11 that captures a three-dimensional image P1 of an organ B on which a pattern of the surface of the organ is indicated, a calculation unit that calculates at least one of a movement amount and a deformation amount of the organ on the basis of a temporal change of the three-dimensional shape of the organ indicated by the plurality of three-dimentional images P1 and the temporal change of the pattern. On the basis of at least one of the movement amount and the deformation amount, a projection unit 14 follows at least one of the movement and deformation of the organ, projects a projection image P2 onto the organ B, and performs projection mapping for navigation of an operation.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2019,JPO&INPIT【課題】患者に負担をかけず、手術を妨げずに臓器の移動及び変形を追跡することができる臓器追跡装置、臓器追跡方法及び臓器追跡プログラムを提供する。【解決手段】臓器追跡装置１０は、臓器Ｂの表面の模様が示された、臓器の立体画像Ｐ１を撮影する撮影部１１と、複数の立体画像Ｐ１により示される臓器の立体形状の時間変化及び模様の時間変化に基づいて、臓器の移動量及び変形量の少なくともいずれかを算出する算出部と、を備える。投影部１４は、移動量及び変形量の少なくともいずれかに基づいて、臓器の移動及び変形の少なくともいずれかに追随させ、投影画像Ｐ２を臓器Ｂに投影し、手術のナビゲーションをするプロジェクションマッピングを行う。【選択図】図１
