Evaluation of causal heart diseases in cardioembolic stroke by cardiac computed tomography

Figure 18  Atrial septal aneurysm with patent foramen ovale. A 53-year-old man with acute ischemic stroke underwent cardiac computed tomography (CCT) to rule out obstructive coronary artery disease. A: Diffusion-weighted brain magnetic resonance imaging shows hyperintense lesions in right frontal lobe and left precentral gyrus (arrows); B and C: Horizontal long axis (B) and short axis oblique (C) reformatted cardiac computed tomography (CCT) images show right bulging atrial septal aneurysm (arrowheads); D and E: Horizontal long axis (D) and short axis oblique (E) reformatted CCT images show small pinhole-like jet from LA via patent foramen ovale into RA (arrows). LA: Left atrium; RA: Right atrium.