Interactive worksheet
Dual-Energy CT Perfusion Defect Score (PH Correlate) Calculator
Calculator mode This tool supports two peer-reviewed approaches: 1) CTEPH segmental scoring (Abozeed et al., 2022): Perfusion Defect (PD) Score = number of segmental perfusion defects (0–18). Optional “Combined Score” adds clot-burden points (anatomic thrombus load) for stronger correlation with hemodynamics. 2) Perfusion Defect Percentage (Kim et al., 2014): Mean extent of perfusion defect across three coronal plane