1. A diagnostic ultrasound system for imaging multiple planes of a target anatomy comprising: a matrix array probe configured to scan a plurality of image planes in real-time in a region of a body; a beamform controller configured to control scanning by the matrix array probe; an image processor, coupled to the matrix array probe, configured to produce real-time ultrasound images of the plurality of image planes scanned by the matrix array probe; a display, coupled to the image processor, for simultaneously displaying the ultrasound images in real-time; data representing an anatomical model of the target anatomy; an image registration processor configured to register an ultrasound image with the data representing the anatomical model, generate image plane orientation data including orientations of standard view planes derived from the anatomical model in response to registration of the ultrasound image, and provide the image plane orientation data in a gating signal to the beamform controller; wherein the beamform controller is configured to cause the matrix array probe to scan in real-time, the plurality of image planes using the image plane orientation data.