Imagine if you shrunk all of the machines in a hospital and crammed them into a single device the size of an iPhone that could diagnose and treat hundreds of diseases. That is what this week’s guest is trying to do. The Sunday Times’ tech correspondent Danny Fortson brings on Mary Lou Jepsen to talk about building a mobile device to diagnose stroke at her startup Openwater (4:30), killing cancer cells with infrared light (8:45), how it takes 13 years to create a new medical device (14:45), why MRI’s are so expensive (18:00), her history in consumer electronics (21:10), convincing investors that open-source is the best approach (25:30), when she nearly died (28:20), using the tools of our time (30:30), the device (38:50), the handheld hospital (41:20), a medical app store (51:00), telepathy (52:00), her friendship with Peter Gabriel (57:30), and building a new medical business model (1:00:30).

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