This article aims to address "Detailed Ultrasound" or "Anomaly Screening," examinations often associated with Perinatology Specialists that can sometimes cause anxiety due to certain prejudices.

Is detailed ultrasound important? Is it necessary for every pregnancy? Ideally performed at the 20th week (range: 18-22 weeks), this examination provides four major benefits:

  1. Structural & Genetic Screening: It detects severe disabilities, chromosomal abnormality signs, and organ defects. While older studies cited a 60% detection rate, modern high-resolution devices and experience have pushed this success rate above 80% for general anomalies and over 90% for life-threatening conditions.

  2. Preventive Medicine: It helps predict preterm labor by measuring cervical length and identifies risks for high blood pressure (Preeclampsia) via Doppler, allowing for early intervention.

  3. Down Syndrome Risk Assessment: While ultrasound alone cannot definitively diagnose Down Syndrome, it identifies "markers" (like heart holes/VSD or abnormal vessels/ARSA). If a marker is found, it helps in the decision for Amniocentesis.

  4. Advanced Imaging: 3D/4D and Color Doppler functions provide information about the baby's health that cannot be seen on standard black-and-white (gray scale) scans.

NIPT vs. Ultrasound: DNA tests (NIPT) usually only screen for the most common 5 chromosomes. They cannot detect structural organ abnormalities. Therefore, a detailed ultrasound is still necessary even if NIPT results are "low risk."

The Obesity Factor: High body mass index (BMI) makes imaging difficult. For overweight patients, we recommend serial examinations starting from the 18th week to ensure all organs are properly evaluated.

Baby Photos: While 3D face photos are popular, they depend on luck—the baby's position, the placenta's location, and the mother's abdominal structure. Our priority is always health first, photos second.