Secundum atrial septal defect (ASD) CardiacCT. In nl development, the ostium secundum allows placental blood to bypass lungs by RA to LA shunting then closes at birth; As part of a MMI approach, CT can survey the thorax, eval function and help with Rx planning - Dr Andrew D. Choi @AChoiHeart #Clinical #Radiology #Cardiology #CardiacCTA #CCTA #ASD #Atrial #SeptalDefect #Secundum
