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.
(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
sinus < AA
A ("ascending distention")
sinus <= STJ
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