Visualization of Arterio-Venous Shunts by Cinefluorography in the Lungs of Normal Dogs.

Abstract
A shunt between the pulmonary artery and vein was demonstrated in 3 of 4 dogs by injecting Thorotrast into a catheter inserted tightly into the pulmonary artery and following the circulation by cinefluorography. In 1 of these dogs the passage of glass spheres 200 [plus or minus] 25 in diam., through a cannula in the pulmonary artery, to and through a cannula in the aorta, together with the location of the shunt from plastic casts of the pulmonary vessels, help to confirm the presence of the shunt.