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1 From the Department of Radiology, University of Minnesota Hospitals, Minneapolis, Minnesota
Malformations of the tetralogy of Fallot type are often associated with hypoplasia or absence of the pulmonary artery. The reduced pulmonary circulation is partially compensated by collateral circulation from
[See figure in the PDF file]
vessels with an anomalous origin from systematic arteries.
Detection of an absent pulmonary artery and visualization of atypical vessels from the arota or supra-aortic arteries are possible by means of preliminary tomography in the frontal and lateral (right left or left right) views. In cases of truncus arteriosus communis, the atypical origins of the pulmonary arteris can likewise be visualized by tomography.
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