https://pmc.ncbi.nlm.nih.gov/articles/PMC11075509/
Quadricuspid Aortic Valve: Imaging, Diagnosis, and Prognosis - PMC
Quadricuspid aortic valve is a rare congenital cardiac anomaly with an incidence of 0.008% to 0.043%. Its clinical course varies depending on cusp anatomy,...
diagnosis and prognosisaortic valveimagingpmc