Disclosed is an ultrasound image processing apparatus (5) comprising an image processor arrangement (50) adapted to receive a first sequence (100') of ultrasound images (150) imaging an anatomical feature of interest (151) during a first full cardiac cycle in the absence of an invasive medical device (15) in said ultrasound images, each ultrasound image corresponding to a different phase of said cardiac cycle； receive a further sequence (100') of ultrasound images (150) imaging an anatomical feature of interest (151) during a further full cardiac cycle in the presence of the invasive medical device (15) in said ultrasound images, each ultrasound image corresponding to a different phase of said cardiac cycle said invasive medical device (15) at least partially obscuring the anatomical feature of interest, and for each ultrasound image of the further sequence: track the location of the invasive medical device in the ultrasound image； isolate the invasive medical device from the ultrasound image； and insert the isolated invasive medical device into an ultrasound image of the first sequence of a corresponding phase of the cardiac cycle in the tracked location； and control a display device to display the first sequence of ultrasound images including the inserted invasive medical device. Also disclosed are an ultrasound imaging system comprising such an ultrasound image processing apparatus, a method to be implemented by such an ultrasound image processing apparatus and a computer program product facilitating the implementation of such a method.L'invention concerne un appareil de traitement d'image ultrasonore (5) comprenant un agencement (50) de processeur d'image conçu pour recevoir une première séquence (100') d'images ultrasonores (150) imageant une caractéristique anatomique d'intérêt (151) pendant un premier cycle cardiaque complet en l'absence d'un dispositif médical invasif (15) dans lesdites images ultrasonores, chaque image ultrasonore correspondant à une phase
