Table 1: Open in new tab In vivo...

Table 1:

In vivo stiffness parameters distensibility, compliance, and arterial stiffness index are derived using change in cross-sectional aortic areas measure using MRI

Parameter	Equation
Maximal aortic strain (⁠ $S$ ⁠)	$\frac{A_{S} - A_{D}}{A_{D}}$
Distensibility (⁠ $D$ ⁠)	$\frac{A_{S} - A_{D}}{A_{D} (P_{S} - P_{D})}$
Compliance (⁠ $C$ ⁠)	$\frac{A_{S} - A_{D}}{P_{S} - P_{D}}$
Aortic stiffness index (ASI)	$\frac{\ln \frac{P_{S}}{P_{D}}}{\frac{A_{S}}{A_{D}} - 1}$

A_s: peak systolic area; A_d: peak diastolic area; P_s: end systolic blood pressure; P_d: end diastolic blood pressure.

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