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Predictions of mean main pulmonary artery (MPA) pressure (top) and fractional flow reserve (FFR, bottom) when increasing lesion severity in ring-like (A) or web-like (B) lesions. FFR predictions correspond to 9 ring-like lesions and 11 web-like lesions. Overall, ring-like lesions have a greater effect on MPA pressure and FFR than web-like lesions.
