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FIG 5. Results of the PE tubes phantom experiments.
A, A significant linear correlation was found between the gaussian SDs and the inner diameters of the PE tubes (r =. 998, P < .001).
B, PVSF calibration curve obtained from the PE tubes phantom (fig 2). A significant exponential correlation was found between PVSF and gaussian SDs for the PE tubes (r =. 996, P < .001).
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