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The illustrated definitions of (i) axial, circumferential, and magnitude WSS sub-vectors (left) and (ii) the 2 methods of measuring these WSS sub-vectors at aortic locations. Ao, aorta; BAV, bicuspid aortic valve; WSS, wall shear stress; WSSA, axial wall shear stress; WSSC, circumferential wall shear stress; WSSM, magnitude wall shear stress; WSSavg, circumference-averaged WSS; WSSmax, localized maximum WSS.
