12/02/2026
๐ฃ๐ฟ๐ฒ๐ด๐ป๐ฎ๐ป๐ฐ๐ ๐ฆ๐ฐ๐ฎ๐ป๐ โ ๐ช๐ต๐ฎ๐ ๐๐ฎ๐ฐ๐ต ๐จ๐น๐๐ฟ๐ฎ๐๐ผ๐๐ป๐ฑ ๐ฅ๐ฒ๐ฎ๐น๐น๐ ๐ฆ๐ต๐ผ๐๐
Understanding obstetric ultrasound is not just about weeks โ itโs about what we assess at each stage.
๐นDating Scan (6โ9 weeks)
Confirms intrauterine pregnancy, detects fetal heartbeat, and measures CRL for accurate gestational age. This is the foundation of proper pregnancy dating.
๐นNT Scan (11 weeks to 13 weeks 6 days)
A true mid-sagittal view is used to measure nuchal translucency (CRL 45โ84 mm). It is a screening tool for chromosomal abnormalities โ not a diagnosis.
๐นAnomaly Scan (18โ22 weeks)
A detailed anatomical survey assessing brain, heart, spine, abdominal organs, placenta, and amniotic fluid. Most structural anomalies are detected at this stage.
๐นGrowth Scan (28โ32 weeks)
Evaluates fetal biometry (BPD, HC, AC, FL), estimates fetal weight, assesses AFI, and monitors for IUGR or macrosomia.
๐น Doppler Scan (After 28 weeks โ High-risk cases)
Analyzes blood flow in vessels such as the umbilical artery and MCA. Essential in suspected placental insufficiency, IUGR, or preeclampsia.
๐น Final / Position Scan (36โ38 weeks)
Confirms fetal presentation (cephalic or breech), reassesses placenta and amniotic fluid, and estimates final fetal weight for delivery planning.