Photon-Counting CT

Photon-counting CT is a next-generation computed tomography technology with a new kind of detector. Where conventional CT detectors measure the total amount of X-ray energy that arrives, a photon-counting scanner counts each individual X-ray photon and measures its energy. This more refined way of gathering data produces noticeably sharper images with higher contrast, so very small structures, fine blood vessels and early-stage disease can be seen in greater detail, all while keeping the radiation dose low. Like all CT it uses X-rays, but it is designed to make the most of every photon, which can mean better images at a lower dose.