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Fig. 15 —Narrow-angle versus full-volume imaging is shown as well as different levels of resolution possible (high, medium, low). In this particular algorithm for 3D imaging, choice was made to keep number of scan lines; hence, volume rate is constant and results in change in resolution from narrow angle to full volume. See Full-Volume Versus Narrow-Angle Acquisition section for further discussion regarding resolution and zoom. (Illustration by Richard Gersony)