Embodiments for providing ultrasound spatial compound images are disclosed. In one embodiment, by way of non-limiting example, an ultrasound system comprises: an ultrasound data acquisition unit configured to acquire ultrasound data for a periodically moving target object and a processing unit in communication with the ultrasound data acquisition unit, the processing unit being configured to form a plurality of ultrasound images based on the ultrasound data, detect moving periods of the target object based on the ultrasound images, reconstruct the ultrasound images corresponding to each of the moving periods and perform spatial compounding upon the reconstructed ultrasound images to form ultrasound spatial compound images.
