Resources          

 

Publications

 

Lior Drukker, Eleonora Staines-Urias, José Villar, Fernando C. Barros, Maria Carvalho, Shama Munim et al. International gestational age-specific centiles for umbilical artery Doppler indices: a longitudinal prospective cohort study of the INTERGROWTH-21st Project. AJOG 2021

         

 Tables & Graphs

 

Umbilical Artery Pulsatility Index (PI)

Umbilical Artery Systolic/Diastolic Ratio (S/D Ratio)

Umbilical Artery Resistance Index (RI)



 

Calculator & Apps

 

 Percentile and Z-score Calculator



Training & Resources