Schaefer et al characterized the aortic root based on measurements of the aorta taken with echocardiography. The authors are from University of Washington in Seattle.
Measurements:
(1) diameter of the aorta at the sinus of Valsalva
(2) diameter of the aorta at the sinotubular junction (STJ)
(3) diameter of the ascending aorta (AA) 4 from the closure plane of the aortic valve
Diameter of Sinus vs Diameter at the STJ
Diameter of Sinus vs Diameter of AA
Type of Aortic Roos
sinus > STJ
sinus >= AA
N ("normal")
sinus > STJ
sinus < AA
A ("ascending distention")
sinus <= STJ
NA
E ("effaced")
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