Ultra–low-contrast photon-counting detector computed tomography (PCD-CT) enabled comprehensive post–transcatheter aortic valve replacement (TAVR) assessment in a patient with atrial fibrillation. An 87-year-old woman with severe aortic stenosis underwent TAVR. Although contrast-enhanced CT is essential for detecting post-procedural complications,1 cumulative contrast burden may increase the risk of kidney injury, particularly when procedures are performed within a short time period.