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Figure 4: Virtual dissection obtained from systolic phase of computed tomography angiogram shown in anteroposterior projection. (a) Sinusal origin of the pulmonary arterial segment and narrowing of the pulmonary outflow (yellow dashed line) by a truncal valvar leaflet (yellow arrow) in patient no. 1. (b) Unobstructed pulmonary orifice despite sinusal origin of the pulmonary arterial segment in the patient shown in right hand panel of Figure 3. LPA: Left pulmonary artery; PA: Pulmonary arterial segment; RPA: Right pulmonary artery

Figure 4: Virtual dissection obtained from systolic phase of computed tomography angiogram shown in anteroposterior projection. (a) Sinusal origin of the pulmonary arterial segment and narrowing of the pulmonary outflow (yellow dashed line) by a truncal valvar leaflet (yellow arrow) in patient no. 1. (b) Unobstructed pulmonary orifice despite sinusal origin of the pulmonary arterial segment in the patient shown in right hand panel of Figure 3. LPA: Left pulmonary artery; PA: Pulmonary arterial segment; RPA: Right pulmonary artery