As for the ultrasonic diagnostic device of this invention, as for the ultrasonic diagnostic device of this invention, correspondence acquiring border information of the suffering inspection body and information of the position regarding the specific region of the ultrasonic image of the suffering inspection body to body border model frame of reference, as it matches with aforementioned suffering inspection body frame of reference and aforementioned body border model frame of reference on the basis of the storage section and the information you store of the position which regarding the specific region of the aforementioned suffering inspection body, with the ultrasonic coaxial tomography which is based on the ultrasonic coaxial tomography data which is retained in the image retention section and with the ultrasonic probe the real time ultrasonic coaxial tomography which image pickup is done the case where it contrasts suffering inspection body coordinateMatching coordinate of the scan aspect of the aforementioned real time ultrasonic coaxial tomography to aforementioned suffering inspection body frame of reference by matching with system and aforementioned body border model frame of reference, the coordinate calculation section which it calculates and, it has.本発明の超音波診断装置は、本発明の超音波診断装置は、被検体の輪郭情報及び被検体の超音波画像の特定部位に関する位置情報を体輪郭モデル座標系に対応付けて記憶する記憶部と、前記被検体の特定部位に関する位置情報に基づいて、前記被検体座標系と前記体輪郭モデル座標系とを対応づけるとともに、画像保存部に保存された超音波断層像データに基づく超音波断層像と、超音波探触子により撮像されるリアルタイム超音波断層像とを対比する際の被検体座標系と前記体輪郭モデル座標系とを対応づけることにより、前記リアルタイム超音波断層像のスキャン面の座標を前記被検体座標系に対応づけて算出する座標算出部と、を備える。
