title: Injection of contrast medium within the interatrial septum.
mesh_terms: D006328:Cardiac Catheterization / Q000295:instrumentation; D003287:Contrast Media / Q000008:administration & dosage*; D006325:Heart Atria / Q000000981:diagnostic imaging*; D006346:Heart Septum / Q000187:drug effects*; D006801:Humans; D011859:Radiography
chemical_list: D003287:Contrast Media