Fig. 1.

Pulse wave acquired using Nadi Tarangini, representing various peaks and time periods of the radial pulse. P1 = pulse amplitude at systolic peak; P2 = pulse amplitude at inflection point; P3 = pulse amplitude at dicrotic notch; P4 = pulse amplitude at Diastolic Peak; Time periods T1, T2, T3, T4 are measured from start of the systolic phase. T1 = time period at systolic peak; T2 = time period at inflection point; T3 = time period at dicrotic notch; T4 = time period at diastolic peak. SI = height of the person (cm)/(T4 − T1].