I started by breaking the existing layout entirely. Before proposing anything new, I interviewed radiologists, breast cancer surgeons, and imaging specialists — understanding their workflow, their frustrations, and the cognitive weight of reviewing scans under time pressure. I benchmarked the competition and found the same weaknesses everywhere: poor clarity, small interaction zones, no hierarchy, no sense of what mattered first. That research became the foundation for a completely new interface logic — one designed around the constraint that a doctor might have one glance to catch something critical. We ran 4 prototype iterations and 2 rounds of user testing, validating every decision with the people who would actually use it.