Switzer Daily 13 May 2021 For all the leaps and bounds in medical science, the know-how behind detecting diseases hasn’t changed much in decades – or even centuries. Take X-rays, which are widely used despite the wee problem of irradiating the patients. And that’s because they are cheap and convenient. The underlying tech hasn’t really moved on since 1895, when Germany physicist Wilhelm Rongen stumbled on the idea with a heated filament cathode that generates electrons in a vacuum tube. Computed tomography (CT) scans – which parses X-ray images into ‘slices’ of a body – have...