Behind the Science: Why Photon-Counting CT Changes Coronary Calcium Imaging | JACC

How much of the coronary calcium seen on CT is real, and how much is image artifact? In this episode of Behind the Science, Adith Arun sits down with Dr. Doosup Shin to discuss their JACC study, "Photon-Counting Detector CT Reduces Calcium Overestimation Compared with Energy-Integrating Detector CT: Micro-CT Validation in Cadaveric Arteries." Using cadaveric coronary arteries and high-resolution micro-CT as the ground truth, the investigators compared next-generation photon-counting CT (PCCT) with conventional energy-integrating detector CT (EID-CT). Their findings show that PCCT substantially reduces calcium blooming artifact and decreases calcium overestimation, providing a more accurate representation of coronary calcification morphology. This conversation highlights how photon-counting CT may transform the evaluation of coronary artery disease by delivering sharper images, more accurate plaque characterization, and improved clinical decision-making. #PhotonCountingCT #CardiacCT #CoronaryCalciumImaging #CCTA #CoronaryArteryDisease #CalciumScoring #CardiovascularImaging #JACC