Figure 2.

Noninvasive monitoring of graft burst strength. a. Average pressure-strain curve of the grafts of different maturation (harvested at 2 wk and 7 wk), exhibiting different burst pressures, b. Average pressure-strain curve with data for 0–15% strain, showing no difference in pressure-strain behavior, c. Correlation of stiffness between 80-120mmHg with burst pressure; solid line is linear regression of the data points (R2 = 0.97) with 95% confidence intervals shown by dotted lines, d. Predicted and measured burst pressure for grafts after 1 and 3 week of bioreactor culture. Stiffness was calculated as defined in Eqn. 2.