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. 2007 Jun 26;362(1484):1407–1419. doi: 10.1098/rstb.2007.2124

Figure 5.

Figure 5

Aortic root deformation during IVC. Data from Dagum et al. and expressed as group mean±s.d. per cent change of deformation (longitudinal, circumferential, shear and torsion) during IVC unless specified otherwise. Circumferential expansion of the base was not uniform during IVC (Dagum et al. 1999), being greatest in the left base and least in the non-coronary (NC) base. The circumferential expansion was paralleled by longitudinal elongation. In contrast to the non-uniform expansion of the base, both commissural expansion and longitudinal deformations were uniform during IVC in the left, right and NC regions. Aortic root shear or torsion deformation was not observed during IVC (Dagum et al. 1999). The per cent area change relative to total change over the entire cardiac cycle of the base and commissures during IVC were 40.3±6.1 and 52.7±9.7%, respectively. Lansac et al. observed the following per cent area change during IVC at different levels of the aortic root: base, 51±5%; commissures, 33±3%; STJ, 14±2%; ascending aorta, 6.6±1%.