Photon-counting computed tomography (PCCT) represents a significant advancement in CT imaging, offering improved contrast-to-noise ratio (CNR) and enhanced tissue differentiation through low-keV (40–60 keV) virtual monoenergetic imaging (VMI) [1,2]. On the commercial clinical PCCT system, the vendor recommends that the radiologist views designated VMI keV levels for various clinical tasks, such as 55 keV for CT angiography. The vendor specifically recommends 60 keV for contrast-enhanced soft tis…