Ultra-high-resolution (UHR) photon-counting detector CT represents a significant advancement in coronary CT angiography (CCTA), offering 0.2 mm spatial resolution and enhanced spectral capabilities. This article presents practical insights and optimized protocols from a high-volume center, focusing on acquisition, reconstruction, and contrast techniques tailored for UHR cardiac imaging. Recommendations address patient selection, workflow integration, and technical challenges, aiming to guide bro…