Direct answer
Hospitals often prefer AMRs for dynamic public corridors because they map and reroute around obstacles, but the right choice depends on payload, infrastructure, safety and process stability.
Navigation
AMRs use onboard perception and mapping; traditional AGVs often depend more heavily on fixed paths or infrastructure.
Operational flexibility
AMRs can be easier to remap as departments change, while fixed systems may provide predictable behavior in controlled routes.
Decision factors
Compare traffic, route variability, payload, lifts, zoning, uptime, support and lifecycle cost rather than the technology label alone.