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Anomaly Scan During Pregnancy - What to Expect & How to Prepare

Published on 02 Mar 2026 WhatsApp Share | Facebook Share | X Share |
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Fetal Anomaly Scan

Finding out you are pregnant is the start of a beautiful journey, but it also comes with a list of medical check-ups that can feel overwhelming. Among these, the Anomaly Scan is perhaps the most important stage of your second trimester. 

If your doctor has recently recommended this scan, you might be feeling a mix of excitement to see your baby again and anxiety about what the results might show. We will walk you through the process in simple, clear terms, answering exactly what happens during the appointment and why this specific ultrasound is a non-negotiable part of modern prenatal care. 

What is an Anomaly Scan?

An anomaly scan, also known as a Level-II ultrasound or a 20-week anatomy scan, is a detailed medical examination that uses high-frequency sound waves to create a comprehensive picture of your baby’s developing body. 

Technically, it is much more intensive than the early "dating" scans. While earlier ultrasounds primarily confirm the heartbeat and due date, the anomaly scan looks at the fetal anatomy in sections.

The sonographer or radiologist examines the baby's internal organs, the structure of the skeleton, and the "soft markers" that indicate healthy development. It provides 2D (and sometimes 3D/4D) images, allowing the specialist to take precise measurements of the head, abdomen, and limbs to ensure they are growing in the correct proportions. 

Why is Anomaly Scan Important During Pregnancy?

The primary goal of the anomaly scan is to provide reassurance. In most cases, it confirms that the baby is developing normally. However, its medical importance cannot be overstated: 

  • Early Detection: It helps identify structural issues that may require medical intervention immediately after birth (like certain heart or kidney conditions). 
  • Planning for Delivery: It checks the placental position. If the placenta is low-lying (Placenta Previa), your doctor will need to plan for a safer delivery method, such as a C-section
  • Life-Saving Interventions: Some conditions can be treated while the baby is still in the womb or immediately after delivery. Skipping this scan means losing the window of opportunity for such life-saving preparations. 

When do doctors recommend it? Every gynecologist will recommend this scan as a routine part of prenatal care, regardless of whether your pregnancy is "low-risk" or "high-risk." 

When is Fetal Anomaly Scan Done?

Timing is everything for this scan. It is typically performed between 18 and 22 weeks of pregnancy. 

  • Why this window? Before 18 weeks, the baby’s organs (especially the heart and brain) are often too small to see in detail. 
  • The 20-Week Sweet Spot: Most specialists prefer the 20th week. By this time, the baby is large enough for a detailed check, and there is still enough amniotic fluid around them to allow the sound waves to create a clear image. After 22-23 weeks, the baby grows larger and the bones become more "opaque" on ultrasound, which can actually make it harder to see the internal organs clearly. 

Conditions That Can Be Detected in an Anomaly Scan

This scan is a vital screening tool for several physical and structural conditions. By detecting these early, doctors can secure the health of both the mother and the baby. Common conditions include: 

  • Neural Tube Defects: Such as Spina Bifida (where the spinal cord doesn't develop properly) or Anencephaly (issues with skull and brain formation). 
  • Heart Defects: The scan checks the four chambers of the heart and the major blood vessels. 
  • Cleft Lip: A gap in the upper lip that can be corrected with surgery after birth. 
  • Kidney Problems: Ensuring both kidneys are present and the bladder is filling correctly. 
  • Abdominal Wall Defects: Checking that the internal organs are safely contained within the baby's body. 
  • Limb Abnormalities: Ensuring the arms, legs, and spine are formed correctly. 
  • Chromosomal Markers: While it isn't a genetic test, certain "soft markers" (like the shape of the head or a fold in the neck) can suggest a risk for Down Syndrome.
In Your 18–22 Weeks of Pregnancy?
Book your anomaly scan at the right time for accurate fetal assessment.

How to Prepare For an Anomaly Scan?

Preparing for the scan is simple and requires very little "medical" prep. 

What to Expect During the Anomaly Scan?

The procedure usually takes 30 to 45 minutes. You will lie on your back, and a cool gel will be applied to your abdomen. The sonographer will move a handheld device (transducer) over your skin. You might feel some firm pressure as they try to get the best angle, especially if the baby is "shy" or tucked away. 

Understanding Anomaly Scan Report

Your report will contain several acronyms. The most common ones are: 

  • BPD (Biparietal Diameter): The diameter of the baby’s head. 
  • FL (Femur Length): The length of the thigh bone. 
  • AC (Abdominal Circumference): Used to estimate the baby’s weight. 
  • Liquor/Amniotic Fluid: Indicates if there is enough fluid for the baby to move and grow. 

What is the Price of Anomaly Scan in India?

In India, the price of an anomaly scan generally ranges around a few thousands in most diagnostic centers. In premium hospitals or metro cities (like Delhi, Mumbai, or Bangalore), it may go up depending on whether 3D/4D imaging or a Fetal Echo is included. 

What are the Limitations of Fetal Anomaly Scan?

It is important to understand that while ultrasound is powerful, it has limits: 

  • Not 100% Guaranteed: It cannot detect every single problem (like minor heart holes or hearing issues). 
  • Baby’s Position: If the baby is lying in an awkward position, the sonographer may ask you to walk around or return another day for a clearer view. 
  • Maternal Factors: Higher BMI or abdominal scarring can sometimes reduce the clarity of the images. 

How Artemis Hospitals Provides Advanced Pregnancy Ultrasound Services?

At Artemis Hospitals, we understand that an anomaly scan is more than just a medical requirement—it is a moment of connection between you and your baby. 

We utilize state-of-the-art GE Voluson technology and high-resolution 3D/4D ultrasound machinery to provide the clearest possible images. Our department is led by Fetal Medicine specialists, who are experts in interpreting complex fetal scans and providing empathetic counseling. With a multidisciplinary team of geneticists and neonatologists on standby, we ensure that every expectant mother receives a "gold standard" of care in a comfortable, patient-first environment. 

Article by Dr. Aanchal Sablok
Senior Consultant - Fetal Medicine
Artemis Hospitals

Frequently Asked Questions

When is the best time for fetal anomaly scan?

Usually between 18 and 22 weeks of pregnancy. This is when the baby’s organs are developed enough to be seen in detail, but there is still enough room in the womb for a clear view. 

Can an anomaly scan tell gender?

Technically, the scan can identify the baby’s sex by looking at the genitalia, provided the baby is in the right position. However, please note that prenatal sex determination is strictly illegal in India under the PCPNDT Act. 

Why do doctors suggest an early anomaly scan?

Doctors suggest an early scan (around 12–16 weeks) for high-risk pregnancies to detect major structural issues or genetic markers sooner, allowing for earlier medical planning or reassurance.

Is an anomaly scan painful?

The scan is not painful. You might feel mild discomfort or pressure on your abdomen as the sonographer moves the handheld probe to get the best angle, or if you are required to have a full bladder. 

How much do anomaly scans typically cost?

The anomaly scan cost starts from a few thousand rupees. You can consult with the Artemis Hospital experts and see if you’re at the stage of anomaly scan or if you’re a high-risk pregnancy case. Contact us to learn more. 

Is the anomaly scan safe for the baby?

Yes, it is entirely safe. It uses high-frequency sound waves (ultrasound) rather than radiation, and there are no known risks to the baby or the mother. 

Can an anomaly scan be repeated if results are unclear?

Yes, an anomaly scan can be repeated if the baby’s position, maternal BMI, or persistent movement prevents the sonographer from getting clear views. Most hospitals will offer a follow-up appointment to complete the detailed examination of the baby’s organs and structure. 

Where can I get an anomaly scan near me?

Artemis Hospitals is conveniently located in Sector 51, right at the heart of Gurugram, making advanced medical care easily accessible to nearby residents. Patients can receive essential treatments, diagnostics, and emergency services promptly—without the stress of long-distance travel—ensuring timely care when it matters most.

Is a high-risk pregnancy anomaly scan available at Artemis Hospital, Gurgaon?

Yes, we at Artemis Hospitals do cater to patients with high-risk pregnancy. Our amenities are designed to ensure complete safety, comfort, and specialized care for both mother and baby.

How can I book an appointment with a doctor at Artemis Hospitals for a fetal anomaly scan?

To book an appointment with a specialist at Artemis Hospitals, Gurugram, contact us at +91 98004 0098. Our team will get in touch with you and book a slot with the expert at your convenience and the doctor’s availability.

World Of Artemis

Artemis Hospitals, established in 2007, is a healthcare venture launched by the promoters of the 4$ Billion Apollo Tyres Group. It is spread across a total area of 525,000 square feet.

To know more
For any inquiries, appointment bookings, or general concerns, reach us at contactus@artemishospitals.com.
For International Patient Services, reach us at internationaldesk@artemishospitals.com.
For any feedback-related issues, reach us at feedback@artemishospitals.com.

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