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