UHR PCCTA provided significantly more accurate measurements of calcified and partially calcified coronary stenoses than conventional energy-integrating detector (EID) CCTA, while maintaining comparable radiation dose and contrast media volume.
The improved spatial resolution of PCCT reduced overestimation of stenosis severity, leading to 49.0% of patients being reclassified to a lower CAD-RADS category and reducing unnecessary downstream testing.
Compared with quantitative coronary angiography, UHR PCCTA demonstrated substantially better agreement for stenosis quantification, supporting its role as a more accurate non-invasive imaging technique for patients with coronary artery disease.
