Cardiac CT Appearances

Patent Ductus Arteriosus (PDA) CT Findings

• Vessel connecting the main pulmonary artery and the aorta that is patent
• Calcification at the site of the PDA is common
• Communication best seen on MPR and 3D images
• Flow may be from aorta to pulmonary artery or pulmonary artery to aorta

Other Information About Patent Ductus Arteriosus (PDA)

Etiology:

• Unknown

Epidemiology:

• Infants born weighing less than 1000-2500g
• Infants born at less than 26 weeks gestation

Presentation:

• Asymptomatic

Prognosis:

• Treated PDA has a good prognosis