PROBLEM TO BE SOLVED: To provide an ultrasound imaging system capable of reliably removing an artifact.SOLUTION: The ultrasound imaging system for imaging an image of an object to be imaged by transmitting and receiving the object to be imaged and an ultrasound signal includes: an image generation part for generating the image of the object to be imaged for each determined position by determining the position on a distance resolution direction which is a traveling direction of the ultrasound signal and an azimuth resolution direction orthogonal to a traveling direction, transmitting and receiving the object to be imaged and the ultrasound signal by moving a transmitting and receiving end to a determined position, and repeating to determine the position and transmit and receive the ultrasound signal and a superposed part for superposing a plurality of images generated by the image generation part.COPYRIGHT: (C)2013,JPO&INPIT【課題】アーチファクトを確実に除去することが可能な超音波画像装置を提供すること。【解決手段】撮像対象物と超音波信号の送受信を行うことにより撮像対象物の画像を撮像する超音波画像装置において、超音波信号の進行方向である距離分解能方向、及び進行方向に直交する方位分解能方向上における位置を決定し、決定した位置に送受信端を移動させて撮像対象物と超音波信号の送受信を行い、位置の決定と超音波信号の送受信とを繰り返して、決定した位置ごとに撮像対象物の画像を生成する画像生成部と、画像生成部により生成された複数の画像を重ね合わせる重ね合わせ部とを備える。【選択図】図3