Merck Manual

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Amplatz canine ductal occluder, radiograph
Amplatz canine ductal occluder, radiograph
Amplatz canine ductal occluder, radiograph

Right lateral radiograph of an Amplatz canine ductal occluder. The flat, distal disc of the device is deployed within the pulmonary artery, and the cupped, proximal disc within the ampulla (body) of the PDA.

Courtesy of Dr. Sandra Tou.