PROBLEM TO BE SOLVED: To display a three-dimensional intra-tubular-structure image generated from a plurality of tomographic images of a tubular structure obtained by performing tomography from the inside along a path of the intra-tubular-structure such as a blood vessel by projecting on a three-dimensional image representing the tubular structure.SOLUTION: The tubular structure 10 is extracted from each of the three-dimensional image representing the tubular structure 10 of a subject and the three-dimensional intra-tubular-structure image. An arbitrary range W1 of the tubular structure 10 of the extracted three-dimensional image is correlated with a range W2, which corresponds to the arbitrary range, of the tubular structure 10 of the three-dimensional intra-tubular-structure image. A projection three-dimensional image is generated by projecting an image of a specific structure included in the arbitrary range W1 in the three-dimensional intra-tubular-structure image into the correlated range in the three-dimensional image.COPYRIGHT: (C)2012,JPO&INPIT【課題】血管等の管状構造物内の経路に沿ってその内側から断層撮影して取得した管状構造物の複数の断層像から生成した3次元管状構造物内画像を、その管状構造物を表す3次元画像に投影して表示する。【解決手段】 被写体の管状構造物10を表す3次元画像および3次元管状構造物内画像からそれぞれ管状構造物10を抽出し、抽出した3次元画像の管状構造物10の任意の範囲W1と該任意の範囲に対応する3次元管状構造物内画像の管状構造物10の範囲W2を対応付けし、3次元管状構造物内画像の任意の範囲10に含まれる特定の構造物の画像を、3次元画像の対応付けられた範囲に投影した投影3次元画像を生成する。【選択図】図6
