1. A method for compounding frames of ultrasound data acquired at different steering angles, the method comprising: (a) acquiring a first frame of data with a first plurality of scan lines covering an display region; (b) acquiring at least a second frame of data with a second plurality of scan lines covering the display region, the second plurality of scan lines having at least one different steering angle than the first plurality of scan lines; and (c) compounding the first frame of data with the second frame of data for the display region.