Which scans are done in the second trimester?

Common second trimester scans include anomaly scan, fetal echocardiography, fetal neurosonography when indicated, genetic sonogram, cervical length scan, growth scan and Doppler scan.

When is the anomaly scan usually done?

The anomaly scan is commonly done between 18 and 22 weeks of pregnancy, depending on the obstetrician's advice and pregnancy situation.

Is fetal echo different from anomaly scan?

Yes. Anomaly scan evaluates fetal structures broadly. Fetal echocardiography is a dedicated detailed assessment of the fetal heart.

Second Trimester Scans in Nagpur | Anomaly, Echo, Brain Scan

Why second trimester scans matter

The second trimester is the main fetal anatomy assessment window

Many important fetal structures are best assessed in the second trimester. This is when doctors commonly advise a detailed anomaly scan, and when selected pregnancies may need fetal echo, brain scan, cervical length, genetic sonogram, Doppler or targeted follow-up.

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Detailed anatomy review

The anomaly scan evaluates fetal brain, face, spine, heart, abdomen, kidneys, limbs, placenta and amniotic fluid.

Specialist targeted scans

If a concern is seen, fetal echo, neurosonography, genetic sonogram or Doppler may help clarify the finding.

Clear counselling

Parents receive structured explanation of scan findings, uncertainty, follow-up plan and coordination with the treating obstetrician.

Second trimester scan menu

Which scan do you need?

The right scan depends on pregnancy weeks, first trimester screening results, previous pregnancy history, family history, current scan finding and your obstetrician’s referral question.

18–22 weeks

Anomaly Scan / Target Scan

The main second trimester structural scan. It systematically evaluates fetal organs, placenta, amniotic fluid, growth parameters and visible structural concerns.

Level II scan Target scan Fetal anatomy

Open Anomaly Scan Page

Usually 18–24 weeks

Fetal Echocardiography

A dedicated fetal heart assessment. It may be advised if cardiac views need detailed review, NT was increased, diabetes is present, IVF pregnancy, family history or suspected heart finding.

Fetal heart Cardiac views Counselling

Open Fetal Echo Page

Advanced heart imaging

Fetal Echo with STIC

STIC helps evaluate the fetal heart using advanced 4D cardiac volume technology. It is useful in selected cases where detailed heart structure review is needed.

STIC 4D heart Advanced fetal echo

Open STIC Page

When brain detail is needed

Fetal Neurosonography

A detailed fetal brain scan advised when ventricles, posterior fossa, corpus callosum, spine, infection history or prior brain concern needs specialist evaluation.

Brain scan Ventricles Posterior fossa

Open Neurosonography Page

16–22 weeks

Genetic Sonogram

A second trimester soft marker scan used for selected pregnancies where risk refinement is needed after screening, family history or previous scan findings.

Soft markers Risk refinement Genetic counselling

Open Genetic Sonogram Page

18–24 weeks

Cervical Length Scan

Measures cervical length, usually by transvaginal ultrasound, to assess risk of preterm birth in selected pregnancies or when advised by the treating doctor.

Short cervix Preterm risk TVS measurement

Open Cervical Length Page

Any trimester when advised

Growth Scan

Measures fetal biometry and estimated fetal weight. In the second trimester, it helps establish growth pattern and guide follow-up where needed.

Biometry Estimated weight Growth trend

Open Growth Scan Page

When blood flow needs review

Colour Doppler Scan

Assesses blood flow in vessels such as uterine artery, umbilical artery and MCA when indicated, especially in IUGR risk, anaemia risk or high-risk pregnancy.

Uterine artery Umbilical artery MCA Doppler

Open Doppler Page

Scan comparison

Second trimester scans at a glance

Scan	Usual timing	Main purpose	When it is advised
Anomaly Scan	18–22 weeks	Detailed fetal structural survey.	Routine second trimester fetal anatomy assessment.
Fetal Echo	Usually 18–24 weeks	Detailed fetal heart assessment.	Suspicious cardiac view, increased NT, diabetes, IVF, family history or referral.
Fetal Echo with STIC	When indicated	Advanced 4D fetal heart volume assessment.	Complex or suspected fetal heart findings requiring detailed review.
Fetal Neurosonography	Often 20 weeks onward when advised	Detailed fetal brain and spine assessment.	Brain finding, ventriculomegaly, posterior fossa concern, infection history or previous affected pregnancy.
Genetic Sonogram	16–22 weeks	Soft marker assessment and risk refinement.	Increased screening risk, borderline findings, previous history or genetic counselling pathway.
Cervical Length Scan	18–24 weeks	Measures cervical length for preterm birth risk assessment.	Previous preterm birth, short cervix concern, twin pregnancy or obstetrician referral.
Growth / Doppler Scan	When advised	Fetal biometry, weight, fluid and blood flow assessment.	IUGR risk, high-risk pregnancy, hypertension, twin pregnancy, anaemia concern or follow-up need.

Technology and expertise

Second trimester assessment with GE Voluson Signature Expert

Mayflower Fetal Medicine uses the GE Voluson Signature Expert, an advanced AI-enabled fetal ultrasound system. In the second trimester, this supports detailed fetal anatomy assessment, fetal heart review, Doppler and 3D/4D structural evaluation when medically needed.

The scan is interpreted by Dr. Kunda Shahane, MBBS, MS (Obs & Gynae), FIFM, FMF (London), Central India’s first dedicated fetal medicine specialist with 20,000+ fetuses evaluated.

SonoLyst AI Supports systematic capture and annotation of fetal anatomy views.

fetalHS Assists structured fetal heart assessment during fetal echo.

STIC & Colour Doppler Supports advanced fetal heart and blood-flow evaluation when clinically indicated.

What to bring

Prepare for your second trimester scan

Bringing previous reports helps the fetal medicine team interpret findings correctly and plan follow-up without delay.

First trimester reports

Bring NT scan, combined screening, NIPT, double marker or previous ultrasound reports if available.

Referral note

If your obstetrician has requested fetal echo, neurosonography, Doppler or cervical length scan, bring the referral question.

Previous history

Carry details of previous affected pregnancy, preterm birth, genetic history, IVF pregnancy or maternal medical condition.

Frequently asked questions

Second Trimester Scan FAQs

When should I book the anomaly scan?

The anomaly scan is commonly performed between 18 and 22 weeks of pregnancy. Your obstetrician or fetal medicine specialist may advise timing based on your pregnancy history and previous reports.

Is fetal echo included in every anomaly scan?

The anomaly scan includes basic heart views, but fetal echocardiography is a dedicated detailed fetal heart scan. It may be advised separately when heart assessment needs specialist focus.

Who needs fetal neurosonography?

Fetal neurosonography is advised when a detailed fetal brain scan is needed, such as ventriculomegaly, posterior fossa concern, corpus callosum concern, infection history, family history or prior affected pregnancy.

What is a genetic sonogram?

A genetic sonogram is a second trimester soft marker scan. It looks for selected ultrasound markers that may modify chromosomal risk and is interpreted with screening history and genetic counselling.

Why is cervical length measured in the second trimester?

Cervical length measurement may help assess preterm birth risk in selected pregnancies, especially with previous preterm delivery, twin pregnancy or short cervix concern.

Can fetal sex be disclosed during second trimester scans?

No. Mayflower Fetal Medicine & High-Risk Pregnancy Centre strictly follows the PCPNDT Act. Determination and disclosure of fetal sex is prohibited by law and is not performed.

Book your second trimester scan at Mayflower

Send your pregnancy weeks, previous reports and referral reason on WhatsApp. The Mayflower team can guide whether you need anomaly scan, fetal echo, neurosonography, genetic sonogram, cervical length scan, growth scan or Doppler.

Call 0712-669-2706 WhatsApp +91-8087471244 Book Appointment

Medical Disclaimer: This page is for general patient education only and does not constitute medical advice, diagnosis, or treatment. Second trimester scan findings must be interpreted by a qualified doctor with your clinical history, previous reports and obstetrician’s advice. In an emergency, contact your nearest hospital immediately.

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Second Trimester Scans in Nagpur