Fig. 1From: Interventricular membranous septal aneurysm: CT and MR manifestations a and b: Anatomy of the interventricular septum. a Parasternal long-axis view of three portions of the interventricular septum: interventricular membranous septum, infundibular septum, and trabecular or muscular septum. b Parasternal short-axis view of the cardiac septum: atrialseptum, atrioventricular septum, and the membranous portion of the interventricular septum are shownBack to article page