Disclosed is an ultrasound image processing apparatus (5) comprising an image processor arrangement (50) adapted to receive a plurality of ultrasound images (150), each ultrasound image imaging an invasive medical device (15) relative to an anatomical feature of interest (151) during a particular phase of a cardiac cycle, said anatomical feature of interest having a different shape at different phases of the cardiac cycle, the plurality of ultrasound images covering at least two cardiac cycles during which the invasive medical device is displaced relative to the anatomical feature of interest; compile a plurality of groups of the ultrasound images, wherein the ultrasound images in each group belong to the same phase of said cardiac cycles; and for each group: determine the displacement of the invasive medical device relative to the anatomical feature of interest between at least two ultrasound images in said group; and generate an augmented ultrasound image from one of the ultrasound images of the at least two ultrasound images by removing a shadow region (17) on the anatomical feature of interest caused by the invasive medical device from said ultrasound image based on the determined displacement of the 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 de processeur d'image (50) conçu pour recevoir une pluralité d'images ultrasonores (150), chaque image ultrasonore imageant un dispositif médical invasif (15) par rapport à une caractéristique anatomique d'intérêt (151) pendant une phase particulière d'un cycle cardiaque, ladite caractéristique anatomique d'intérêt ayant une forme différente à différentes phases du cycle cardiaque, la p