PROBLEM TO BE SOLVED: To provide an ultrasound diagnosis system capable of readily displaying an ultrasonic image that makes it possible to observe plural puncture needles in a case where the plural puncture needles are plunged.SOLUTION: The ultrasound diagnosis system includes an ultrasonic probe 2 that acquires an echo signal of a three-dimensional region R of an object in a predetermined coordinate system by transmitting or receiving ultrasonic waves to or from the three-dimensional region R, a region position detection unit that detects the position of the three-dimensional region R in the coordinate system, a needle position detection unit that detects the positions and orientations of puncture needles N1, N2, and N3 to be plunged into the object in the coordinate system, a plane identification unit that identifies the position of a plane which contains at least two puncture needles out of the puncture needles N1, N2, and N3, in the three-dimensional region R on the basis of pieces of position detection information provided by the region position detection unit and needle position detection unit, and a display image control unit that displays an ultrasonic image which is based on the echo signal and concerned with the plane identified by the plane specification unit.COPYRIGHT: (C)2015,JPO&INPIT【課題】複数本の穿刺針が刺入された場合にも、これらを観察可能な超音波画像を容易に表示させることができる超音波診断装置を提供する。【解決手段】所定の座標系における被検体の三次元領域Rに対する超音波の送受信を行なって前記三次元領域Rのエコー信号を取得する超音波プローブ2と、前記座標系において、前記三次元領域Rの位置を検出する領域位置検出部と、前記座標系において、前記被検体に対して刺入される穿刺針N1,N2,N3の位置及び向きを検出する針位置検出部と、前記穿刺針N1,N2,N3のうち、少なくとも二本の穿刺針を含む面の前記三次元領域Rにおける位置を、前記領域位置検出部及び前記針位置検出部の位置検出情報に基づいて特定する面特定部と、面特定部によって特定された面について、前記エコー信号に基づく超音波画像を表示させる表示画像制御部と、を備えることを特徴とする。【選択図】図7
