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Radiology, Vol 122, 581-585, Copyright © 1977 by Radiological Society of North America

ARTICLES

Criteria of the silhouette sign

R Longuet, J Phelan, H Tanous and S Bushong

The silhouette sign is a reliable sign, distinguishing anterior lung lesions from posterior or lower lung lesions. This paper has shown that the mechanism by which this occurs is not based on anatomical contact between intrathoracic structures, but on principles governing radiographic contrast, and the perception of that contrast.




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Copyright © 1977 by the Radiological Society of North America.