 Photon counting detectors, PCDs, are a new type of computed tomography, CT, technology which offers improved image quality compared to traditional CT scans. PCDs have multiple energy capabilities, higher spatial resolution, and lower noise levels than traditional CT scanners, allowing for clearer images of soft tissues and reducing the need for contrast agents. Additionally, PCDs can reduce patient radiation exposure by up to 70%, making them safer and more comfortable for patients. PCDs also offer greater accuracy when it comes to measuring the degree of stenosis and plaque characteristics due to their superior spatial resolution. Finally, PCDs can be used to detect two different types of contrast agents simultaneously, providing even more detailed information about the heart and coronary arteries. This article was offered by Filippo Catamartiri, Antonella Maloney, Laura Pistoia, and others.