Cine Images

Files in this Data Supplement:

• Fig. S1C - Fig. S1C—Cine steady-state free precession sequence shows thin membrane corresponding to interatrial septum bowing 16 mm into left atrium. Finding is consistent with interatrial septal aneurysm and corresponds exactly to pseudomass in Figure 1A.
• Fig. S2C - Fig. S2C—Cine steady-state free precession sequence confirms presence of interatrial septal aneurysm extending into left atrium and corresponding exactly with pseudomass in Figure 2A.
• Fig. S3D - Fig. S3D—Multiphasic reconstruction cine images through region of aneurysm show forward motion of aneurysm into right ventricular outflow tract during ventricular systole.