Ultrasound imaging data is obtained at an adjustable collection image frame rate (Fig. 6), as well as at an adjustable acquisition rate (Fig. 15). Speckle is reduced in full motion ultrasound image data by filtering image frames of a physiologic cycle across the cycles, instead of temporally. Ultrasound imaging data obtained from anatomic structures which have periodic physiologic motion that define successive physiologic cycles which is packaged into image loops (100). Also provided is a scheme for increasing the acquisition frame rate in a medical ultrasound imaging system (168) which acquires imaging data of an anatomic structure having periodic physiologic motion that defines successive physiologic cycles (Figs. 26, 27).
