{Reference Type}: Case Reports {Title}: Diagnosis of membranous supravalvular aortic stenosis with severe aortic valve insufficiency. {Author}: Chen R;Cao JF;Wang ZJ;Wang C;Duan JL;Li C;Xiao B; {Journal}: J Clin Ultrasound {Volume}: 52 {Issue}: 3 {Year}: 2024 Mar-Apr 27 {Factor}: 0.869 {DOI}: 10.1002/jcu.23621 {Abstract}: Although the clinical manifestations of membranous supravalvular aortic stenosis (SVAS) are distinctive, its diagnosis remains challenging. Failure to initiate surgical treatment in a timely manner greatly increases the risk of sudden cardiac death. We report a case of membranous SVAS, detailing the clinical presentation and imaging manifestations.