1. An ultrasound imaging system comprising: a processor configured to execute instructions to produce an ultrasound image including an image of an interventional instrument by: establishing a first imaging signature having one or more imaging parameters including a first range of image steering angles used for imaging tissue; establishing a second imaging signature having one or more imaging parameters including a second range of image steering angles used for visualization of the interventional instrument; generating a plurality of first subframes using image data resulting from the application of the first imaging signature; generating at least one second subframe using image data resulting from the application of the second imaging signature; spatially compounding the plurality of first subframes to generate a first image frame; generating a second image frame using the at least one second subframe, wherein the second image frame includes an image of the interventional instrument; blending pixels from the first image frame and a portion of the second image frame to form a final ultrasound image; and producing a graphic on the final ultrasound image indicative of a coverage area where visualization of the interventional instrument is enabled.