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Table 2 Assessment of color Doppler and ultrasonography across gestation at different time points

From: The REVAMP study: research exploring various aspects and mechanisms in preeclampsia: study protocol

Time points Radiology Measurements
Ultrasonography (USG) Color Doppler
11-14 weeks • CRL • Mean uterine artery PI
• NT • Ductus venosus
18-22 weeks • BPD • Mean uterine artery PI
• HC
• AC
• FL
• Estimated fetal weight
• Placenta position
• Placenta previa
• Liquor quantity
• Anomaly
32-35 weeks • BPD • Mean uterine artery PI and RI
• HC • Umbilical artery PI and RI
• AC • Fetal middle cerebral artery PI and RI
• FL
• Estimated fetal weight
• Placenta position
• Placenta previa
• Liquor quantity
• Anomaly
• AFI
  1. AC abdominal circumference, AFI amniotic fluid index, BPD biparietal diameter, CRL crown rump length, FL femur length, HC head circumference, NT nuchal translucency, PI pulsatility index, RI resistance index, USG ultrasonography