USG FWB Level 2 (Anomaly Scan) in Bihar
Detailed fetal anomaly ultrasound at JP Diagnostic performed at 18-22 weeks. Systematic evaluation of fetal brain, heart, spine, limbs, face, and abdomen — the most important scan during pregnancy across Patna, Gaya & Muzaffarpur.
What is FWB Level 2 (Anomaly Scan)?
A comprehensive, systematic ultrasound examination performed between 18 and 22 weeks of gestation to evaluate fetal anatomy, detect major structural abnormalities, and confirm normal development of all organ systems.
Brain & Spine
Evaluates cerebral ventricles, cerebellum, corpus callosum, skull shape, and spine integrity. Detects spina bifida, anencephaly, and hydrocephalus.
Heart & Chest
Assesses four-chamber view, outflow tracts, heart rate, and rhythm. Evaluates lungs and diaphragm for congenital diaphragmatic hernia.
Limbs & Face
Counts fingers and toes, evaluates long bones, assesses facial profile, cleft lip/palate, and orbits. Detects skeletal dysplasias.
When Do You Need FWB Level 2?
Every pregnancy should have a Level 2 scan. Additional indications increase its importance.
Universal Screening
- All pregnancies at 18-22 weeks
- First pregnancy (primigravida)
- Advanced maternal age (>35 years)
- Family history of congenital anomalies
- Previous pregnancy with anomaly
- Consanguineous marriage
Risk Factors
- Abnormal first trimester screening (NT)
- Abnormal double/triple/quadruple marker
- Maternal diabetes or phenylketonuria
- Teratogen exposure (drugs, radiation, infections)
- Multiple pregnancy (twins/triplets)
- Polyhydramnios or oligohydramnios
Genetic & Chromosomal
- Suspected Down syndrome (soft markers)
- Edwards or Patau syndrome screening
- Turner syndrome features
- Known chromosomal abnormality carrier
- Previous child with genetic disorder
Follow-up Indications
- Abnormal routine scan findings
- Fetal echocardiography referral
- Amniocentesis result correlation
- Fetal MRI planning
- Pre-surgical planning for fetal anomalies
FWB Level 2 vs Level 1 vs Level 3
Understanding the hierarchy of fetal ultrasound examinations.
| Feature | Level 1 (Routine) | Level 2 (Anomaly) | Level 3 (Specialized) |
|---|---|---|---|
| Timing | Any gestational age | 18-22 weeks | Any (specialized referral) |
| Anatomy Survey | ✕ Basic | ✓ Comprehensive | ✓ Targeted |
| Heart Evaluation | ✕ Four-chamber only | ✓ Outflow tracts | ✓ Fetal Echo |
| Duration | 20-30 minutes | 45-60 minutes | 60-90 minutes |
| Operator | Sonographer | Experienced Radiologist | Fetal Medicine Specialist |
FWB Level 2 is the most important scan of pregnancy — detecting 60-70% of major structural anomalies at a stage when management options are available.
The Procedure
What to expect during your FWB Level 2 scan at JP Diagnostic. Total time: 45 to 60 minutes.
Check-in & Counseling
Bring your antenatal card, all previous scan reports, and screening test results. Our fetal medicine radiologist explains the systematic examination process and obtains informed consent.
Detailed Anatomical Survey
The sonographer systematically examines: fetal head (brain structures, skull), face (profile, lips, orbits), spine (vertebrae, skin line), heart (four chambers, outflow tracts), chest (lungs, diaphragm), abdomen (stomach, kidneys, bladder, cord insertion), and limbs (arms, legs, hands, feet). Fetal position, placenta, and amniotic fluid are also assessed.
Post-Scan & Report
Images are reviewed by the radiologist. A detailed report documents all structures examined, measurements, and any findings. You receive printed images and a comprehensive report. If abnormalities are detected, counseling and referral options are discussed.
How to Prepare
Proper preparation ensures optimal visualization of all fetal structures during this critical examination.
✅ Do’s
- Schedule between 18-22 weeks (ideal window)
- Bring all previous ultrasound and blood test reports
- Bring your antenatal card and vaccination records
- Wear loose, comfortable two-piece clothing
- Have a light meal before (not too full, not fasting)
- Bring your partner for support
❌ Don’ts
- Do not schedule before 18 weeks (structures too small)
- Do not apply oils or lotions on the abdomen
- Do not skip this scan (most important of pregnancy)
- Do not expect gender disclosure (illegal under PCPNDT)
- Do not come without previous reports
Special Cases
| Condition | Required Preparation |
|---|---|
| Multiple Pregnancy | Longer appointment (60-75 min); chorionicity confirmation needed |
| Obese Patients | Early morning appointment; TVS may supplement TAS |
| Previous Anomaly | Bring all previous pregnancy records and genetic counseling notes |
| Increased NT | Bring NT scan report; detailed cardiac evaluation emphasized |
| Poor Fetal Position | May need walk, wait, or return same day for complete views |
Duration & Report Timing
The Level 2 scan requires more time than routine scans due to its comprehensive nature.
| Scan Type | Duration |
|---|---|
| FWB Level 2 (Singleton) | 45 – 60 minutes |
| FWB Level 2 (Twins) | 60 – 75 minutes |
| FWB Level 2 + Fetal Echo | 60 – 90 minutes |
| Re-scan for Poor Position | 20 – 30 minutes |
| FWB Level 3 (Targeted) | 60 – 90 minutes |
Safety & Risks
Level 2 ultrasound is completely safe for mother and fetus when performed by qualified professionals.
- Zero radiation exposure
- No known harmful effects on fetus
- Used worldwide for over 50 years
- Non-invasive and painless
- Safe for extended examination time
- Long scan may cause mild maternal back discomfort
- Pressure on abdomen may be uncomfortable
- Fetal position may require repeat visit
- Emotional stress if abnormalities found
- Detects 60-70% of major anomalies (not 100%)
- Subtle heart defects may be missed
- Brain anomalies may be subtle
- Some anomalies manifest after 22 weeks
- Genetic abnormalities without structural changes missed
⚠️ Legal Notice: Prenatal sex determination is strictly prohibited under the PCPNDT Act. JP Diagnostic complies fully with all legal requirements. We do not disclose fetal gender under any circumstances.
Frequently Asked Questions
Everything you need to know about FWB Level 2 in Bihar.
The ideal window is 18 to 22 weeks (preferably 19-20 weeks). Before 18 weeks, fetal organs are too small to evaluate reliably. After 22 weeks, some structures become obscured by fetal position and size, and management options become more limited.
No. Level 2 detects approximately 60-70% of major structural abnormalities. Some conditions (especially cardiac septal defects, cleft palate without lip, and genetic conditions without structural changes) may be missed. No test can guarantee a perfect baby.
If a significant abnormality is detected, our fetal medicine specialist will counsel you about the finding, its implications, and next steps. This may include genetic testing (amniocentesis), fetal echocardiography, fetal MRI, or referral to a tertiary center. We provide compassionate, non-directive counseling.
Yes. Level 2 is a medical diagnostic scan using 2D ultrasound to evaluate anatomy systematically. 3D/4D provides surface rendering for parental bonding and is not a substitute for medical assessment. 3D may be used adjunctively for cleft lip or spinal defects but is not the primary modality.
The cost can vary from centre to centre. Please call or WhatsApp us for the current price. At JP Diagnostic, we offer competitive pricing with EMI and insurance cashless options. Call us for exact pricing.
Preliminary reports within 1 hour, final signed reports within 2 hours. Complex cases requiring specialist review may take up to 24 hours.
In the second trimester, a full bladder is usually not necessary because the uterus is large enough to provide its own acoustic window. However, a partially full bladder may help visualize the cervix and lower uterine segment. Our staff will advise based on your gestational age.
JP Diagnostic offers experienced fetal medicine radiologists, high-resolution ultrasound systems, systematic anomaly scan protocols, and NABH-accredited standards across Patna, Gaya, and Muzaffarpur.
Related Tests
Your obstetrician may recommend these additional diagnostics.
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📞 Phone: 9006677776
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