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. 2022 Jun 30;4(3):e210089. doi: 10.1148/ryct.210089

Figure 12:

Diagram shows four types of ventricular septal defect (VSD). The relationship between the outlet septum (green) and septomarginal trabecula (SMT) defines the location of the VSD. (A) The outlet septum attaches to the anterior limb of the septal band, resulting in a subaortic VSD. (B) The outlet septum attaches to the posterior limb of the septal band, resulting in a subpulmonic VSD. (C) In the doubly committed VSD, the outlet septum is absent. (D) A remote VSD is not related to the outlet septum, and the distance between the VSD and semilunar valve is greater than the size of the aortic valve. Ao = aorta, LV = left ventricle, PA = pulmonary artery, RV = right ventricle.

Diagram shows four types of ventricular septal defect (VSD). The relationship between the outlet septum (green) and septomarginal trabecula (SMT) defines the location of the VSD. (A) The outlet septum attaches to the anterior limb of the septal band, resulting in a subaortic VSD. (B) The outlet septum attaches to the posterior limb of the septal band, resulting in a subpulmonic VSD. (C) In the doubly committed VSD, the outlet septum is absent. (D) A remote VSD is not related to the outlet septum, and the distance between the VSD and semilunar valve is greater than the size of the aortic valve. Ao = aorta, LV = left ventricle, PA = pulmonary artery, RV = right ventricle.