The medical picture diagnostic device of this invention, to calculate the motion state of the section image picture formation department and divide the aforementioned standard picture into the plural territories on the basis of the standard of territory division the territory divided section and the aforementioned plural territories which form two dimensional section image picture which becomes the standard picture from three dimensional picture component and the aforementioned three dimensional picture which form the medical picture acquisition section which acquires the medical picture and three dimensional picture which includes the motion internal organs territory in the aforementioned medical picture, among the aforementioned plural territories one territory specify at least on the basis of a motion state where it is calculated, specificationIt has with the interest territory setting section which sets the territory of the aforementioned medical picture where the territory where it is done is included as the interest territory.本発明の医用画像診断装置は、医用画像を取得する医用画像取得部と、前記医用画像中の運動臓器領域を含む三次元画像を構成する三次元画像構成部と、前記三次元画像から基準画像となる二次元断面像画像を生成する断面像画像生成部と、前記基準画像を領域分割の基準に基づいて複数の領域に分割する領域分割部と、前記複数の領域の運動状態を算出し、算出された運動状態に基づき前記複数の領域のうちの少なくとも一つの領域を特定し、特定された領域が含まれる前記医用画像の領域を関心領域として設定する関心領域設定部とを備える。
