LONDON   Revolutionary AI-driven 3D heart scans cut the need for invasive tests and have already saved millions of pounds, Britain's National Health Service (NHS) said Tuesday. "Now rolled out across 56 NHS hospitals in England, the clever tech enables doctors to diagnose and treat patients with suspected heart disease much faster by turning a CT scan of their heart into a personalized 3D image which is then analyzed using AI," the NHS said in a statement. The tool is helping give tens of