Key result
CT findings including the beak sign and a larger cross-sectional area were the most useful indicators of the false lumen in both acute and chronic aortic dissections.
Why the study?
Which CT findings are reliable indicators of the true or false lumen in an aortic dissection?
Observational
Which CT findings are reliable indicators of the true or false lumen in an aortic dissection?
Specific CT features such as the beak sign, cross-sectional area, and calcification patterns can reliably differentiate the true from the false lumen in aortic dissection.
May aid CT lumen differentiation in aortic dissection; supports prior signs but leaves open prospective validation.
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.
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LePage et al. (2001) conducted an observational in Aortic dissection. CT imaging was evaluated on Indicators of the true or false lumen. CT findings including the beak sign and a larger cross-sectional area were the most useful indicators of the false lumen in both acute and chronic aortic dissections.
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