Medical Photon-Counting CT – Status and Clinical Application Review

Photon-counting detectors are a promising new technology for medical computed tomography (CT). They enhance the clinical application spectrum of CT by providing energy-resolved CT data at very high spatial resolution without electronic noise and with improved tissue contrasts. This review article gives an overview of the principles of photon-counting detector CT, of potential clinical benefits and limitations, and of the experience gained so far in preclinical installations.