Ultrasound Level II (For 18 - 22 Weeks Pregnancies)

During the second trimester, many fetal structures are sufficiently developed to allow a detailed anatomical assessment on ultrasound. The Ultrasound Level II (For 18 - 22 Weeks Pregnancies) is performed between 18 and 22 weeks of gestation to evaluate the baby's anatomy, monitor growth, and assess the health of the pregnancy. It may also assess the placenta, amniotic fluid and, when clinically indicated, the cervix and other maternal structures.

This scan uses high-frequency sound waves to produce real-time images of the fetus and surrounding structures. During the examination, a trained sonographer moves a handheld device (transducer) over the mother's abdomen after applying a water-based gel. The images obtained allow the radiologist to assess different parts of the baby's body without exposing the mother or baby to radiation.

The Level II ultrasound generally includes assessment of major fetal anatomical structures, including the head and brain, face, spine, heart, abdomen, kidneys, bladder and limbs, according to the scan protocol. It also assesses fetal growth, fetal biometry, placental location, amniotic fluid volume and fetal cardiac activity. The findings help healthcare providers monitor pregnancy progress and determine whether additional evaluation or follow-up is required. However, this scan does not guarantee a healthy baby or exclude all birth defects.

For this scan, a valid doctor's prescription is mandatory. The prescription must be signed, stamped, and include the doctor's DMC registration number, as required under the PCPNDT Act. You must also carry a valid Government-issued photo ID (such as Aadhaar Card, Voter ID, or Passport), previous pregnancy records or ultrasound reports (if available), and a signed informed consent form before the examination. These documents are required for appropriate clinical assessment and regulatory compliance.

The scan is performed at a radiology or diagnostic imaging centre by trained healthcare professionals. The procedure is non-invasive, generally comfortable, and does not involve radiation.

Disclaimer: You must get this ultrasound done at a Tata 1mg partnered diagnostic facility.

How to Prepare for Ultrasound Level II (For 18 - 22 Weeks Pregnancies)?

• Carry a valid doctor's prescription.
• Bring previous ultrasound reports and pregnancy records, if available.
• Wear loose, comfortable clothing for easy access to the abdomen.
• Follow the diagnostic centre's instructions regarding bladder preparation. A full bladder is generally not required for a routine mid-trimester anatomy scan unless specifically advised.
• Carry a valid Government-issued photo ID.
• Inform the centre and interpreting clinician about relevant medical conditions, previous pregnancy complications, or specific concerns mentioned by your obstetrician.

How is Ultrasound Level II (For 18 - 22 Weeks Pregnancies) Performed?

• You will lie on the examination table.
• A water-based gel is applied on the abdomen.
• The sonographer moves a handheld device (transducer) over the skin to capture images.
• The ultrasound is typically performed using a transabdominal probe.
• The sonographer may take measurements and record various fetal and maternal parameters.
• The total time may vary depending on imaging quality and test protocol.

How Does Ultrasound Level II (For 18 - 22 Weeks Pregnancies) Work?

Ultrasound uses high-frequency sound waves that travel into the body and bounce back when they hit tissues or fluids. These echoes form live images on a monitor. Because ultrasound uses sound waves rather than ionizing radiation, it is widely used during pregnancy.

Who Should Avoid or Take Precautions During Ultrasound Level II (For 18 - 22 Weeks Pregnancies)?

• Ultrasound Level II (For 18 - 22 Weeks Pregnancies) is generally safe for all pregnant women.
• Inform your provider of any medical conditions before the scan.

What to Expect During the Ultrasound Level II (For 18 - 22 Weeks Pregnancies)?

• Mild pressure from the transducer as it moves over the abdomen.
• The gel may feel slightly cold.
• You may feel mild pressure from the transducer. A full bladder is usually not required unless specifically advised by the centre.
• The baby’s movement or position may delay image capture.
• The sonographer may take several images and measurements.

What to Expect After Ultrasound Level II (For 18 - 22 Weeks Pregnancies)?

• Normal activities can be resumed immediately.
• Your healthcare provider will discuss the findings and next steps.
• Follow-up scans may be recommended based on results.

Is the Ultrasound Level II (For 18 - 22 Weeks Pregnancies) Safe?

This scan is usually safe. It uses sound waves rather than ionizing radiation and is routinely used in pregnancy care.

What are the Risks of the Ultrasound Level II (For 18 - 22 Weeks Pregnancies) Test?

Ultrasound Level II (For 18 - 22 Weeks Pregnancies) is commonly used during pregnancy, and diagnostic ultrasound is generally considered safe when performed appropriately.

• Generally safe when appropriately performed: When performed by trained professionals, ultrasound is safe for both mother and baby.
• Mild discomfort: Some women may feel slight pressure on the abdomen, especially if a full bladder is needed.
• Image quality considerations: Image quality may occasionally be affected by fetal position, maternal body habitus, or other technical factors.

What Are the Limitations of the Ultrasound Level II (For 18 - 22 Weeks Pregnancies) Test?

• Image quality may be affected by fetal position, maternal body habitus, or reduced amniotic fluid.
• Some fetal structures may not be clearly visible during a single examination.
• Not all fetal abnormalities can be detected before birth.
• If visualization is incomplete or additional assessment is needed, your doctor may recommend a repeat ultrasound or other appropriate investigations.

How Are the Results Used?

The test results are used to:

• Assess fetal anatomy and development.
• Monitor fetal growth and gestational progress.
• Evaluate placental location and amniotic fluid volume.
• Identify findings that may require additional evaluation or follow-up.
• Provide information that may support routine prenatal care and clinical decision-making.
• Assist in planning further investigations when clinically indicated.