A system and method for recording and depicting ultrasound images of a moving object are disclosed. In a preferred embodiment, ultrasound images are acquired as the field of view of an ultrasound probe is advanced across the tissues of interest during a resting period between periods of relatively large-scale heart cycle motion. A series of images acquired during a particular resting period may be represented as a three-dimensional volume image, and the comparison of volume images from adjacent cardiac resting periods enables three-dimensional volume image modulation analysis which may be presented for a user as a moving volume image of the objects of interest within the field of view.