A power converter and method of controlling the same for selected modes of operation. A plurality of A-A intervals is detected. Among other advantages, real-world clinical environments may enjoy cost savings for initial system procurement, space savings on clinic floors, easier and less expensive system upgrades, and the ability to use a single system and user interface for both FFBU screening and for follow-up diagnosis, biopsy, etc. The selected portions can be displayed as being connected by graphical elements.