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World J Radiol. Apr 28, 2023; 15(4): 98-117
Published online Apr 28, 2023. doi: 10.4329/wjr.v15.i4.98
Figure 9
Figure 9 Interventricular membranous septal aneurysm. A 78-year-old man underwent cardiac computed tomography (CCT) to further evaluate pathologic outpouching from the left ventricular outflow tract (LVOT) observed on transthoracic echocardiography. A–C: Axial (A), horizontal long axis (B), and sagittal (C) reformatted CCT images show multi-lobular outpouching projecting into right ventricle from LVOT (arrows) consistent with interventricular membranous septal aneurysm (IVMSA), with no evidence of a shunt. Note contrast heterogeneity within IVMSA, which reflects blood stasis in IVMSA.