Arterial Stiffness Calculator
Arterial stiffness is a key marker of vascular wall status and cardiovascular risk. The calculator computes parameters of local arterial stiffness (usually of the common carotid artery) based on ultrasound data: stiffness index β, distensibility coefficient DC, Peterson's modulus Ep, incremental Young's modulus Einc, compliance coefficient CC, and single-point pulse wave velocity PWV-β. Systolic and diastolic diameters (B-mode / eTracking), IMT, blood pressure, and age are entered — the results and automatic approximate interpretation according to the age trend (ETIC/Engelen) are updated in real time. A printable report can be generated.
This tool is educational and for reference purposes. Age ranges are approximate (not diagnostic thresholds); rigorous assessment requires a Z-score using an age-/sex-specific ETIC nomogram with carotid pressure. Results depend on the quality of diameter tracking and the accuracy of blood pressure at the time of scanning. It does not replace a physician's clinical conclusion.
Sources
- Reneman RS, Hoeks APG — conventions for noninvasive assessment of local arterial stiffness.
- O'Rourke MF — arterial wall mechanics and the pulse wave.
- Engelen L, et al. 2015; ETIC project — reference values for common carotid artery stiffness by age.
- Aloka/Hitachi echo-tracking (eTracking) — single-point PWV (β-PWV) method.