AJR Am J Roentgenol 2001 Jul;177(1):207-211
Aortic Dissection: CT Features that Distinguish True Lumen from False Lumen.
LePage MA, Quint LE, Sonnad SS, Deeb GM, Williams DM.
OBJECTIVE. The purpose of this study was to determine which CT findings are
reliable indicators of the true or false lumen in an aortic dissection.
CONCLUSION. The beak sign and a larger cross-sectional area were the most useful
indicators of the false lumen for both acute and chronic dissections. Features
generally indicative of the true lumen included outer wall calcification and
eccentric flap calcification. In cases showing one lumen wrapping around the
other lumen in the aortic arch, the inner lumen was invariably the true lumen.
