title: [Left heart catheterization--2-D echo contrast imaging in the diagnosis of aortic and mitral regurgitation].
mesh_terms: D000293:Adolescent; D000328:Adult; D001022:Aortic Valve Insufficiency / Q000175:diagnosis*; D006328:Cardiac Catheterization; D003287:Contrast Media; D004452:Echocardiography / Q000379:methods*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D008944:Mitral Valve Insufficiency / Q000175:diagnosis*
chemical_list: D003287:Contrast Media