Total 32 cases of pulmonary atresia were diagnosed radiographically at Seoul National University Hospital from March 1979 to August 1982. Some characteristic radiological findings were analyzed in chest PA and cineangiographies. The results were as follows : 1. In the evaluation of chest PA, cardiomegaly was noticed in 16 cases, dextrocardia in 8 cases, elevated cardiacapex in 7 cases and right-sided aortic arch in 6 cases. The pulmonary vascularties were mildly decreased in 20 cases, markedly decreased in 9 cases and decreased with reticular pattern in 3 cases. 2. As final diagnoses after cineangiography, pulmonary atresia was associated with Tetralogy of Fallot variant in 17 cases, transposition of great vessels in 7 cases, single ventricle in 5 cases, tricuspid atresia in 2 cases and intact ventricular septum in 1 case. 3. The classification according to the pattern of pulmonary artery is main pulmonary trunk with PDA(Type Ia) in 10 cases, pulmonary arterial confluence with PDA (Type Ib) in 10 cases, no pulmonary arterial confluence with PDA(Type Ic) in 5 cases, main pulmonary trunk without PDA (Type IIa) in 0 case, pulmonary arterial confluence without PDA (Type IIb) in 5 cases, and no pulmonary arterial conflence without PDA (Type IIc) in 2 cases. 4. Pulmonary wedge venography was done and successful in 8 cases. Among them, confluence between right and left pulmonary arterial was noticed in 5 cases. 5. Biventricular cineangiography and/or pulmonary wedge venography, if nessary, is essential for the accruate diagnosis of pulmonary atersia to demonstrate detailed anatomy of pulmonary artery.