ULTRASOUND GROWTH SCAN

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About The Test

An Ultrasound Growth Scan is a routine, non-invasive imaging test that provides a crucial window into your baby’s development during pregnancy. At Cadabam's Diagnostics, we understand that these final weeks are filled with anticipation, and this scan serves as a vital tool to monitor your baby's growth and overall well-being. It is a completely safe and painless procedure that uses advanced sound wave technology to give you and your doctor peace of mind.

This comprehensive guide will walk you through everything you need to know about the Ultrasound Growth Scan, from its purpose and procedure to the valuable information it provides about your growing baby.

What is an Ultrasound Growth Scan?

An Ultrasound Growth Scan, also known as a fetal biometry or well-being scan, is a specialized diagnostic procedure. It uses high-frequency sound waves (ultrasound) to generate real-time images, called sonograms, of your baby, the placenta, and the amniotic fluid within the uterus.

The technology works by sending sound waves into the body, which bounce off tissues and organs. A computer then translates these returning waves into the detailed black and white images you see on the screen. It's important to know that an Ultrasound Growth Scan does not involve any form of ionizing radiation, making it an exceptionally safe imaging method for both mother and child.

Types of Ultrasound Growth Scan

The primary technique used for a growth scan is the standard 2D (two-dimensional) ultrasound. This provides the clear, flat, black-and-white images necessary for taking precise anatomical measurements.

In addition to the 2D scan, a Doppler ultrasound assessment is often performed as a crucial component of the Ultrasound Growth Scan. Doppler ultrasound is a special technique that measures the speed and direction of blood flow in various blood vessels. By assessing the blood flow in the umbilical cord and sometimes in the baby's brain, our radiologists can evaluate how well the placenta is functioning and delivering oxygen and nutrients to your baby.

List of Parameters

A common question we hear is, "what does a growth scan check?" The sonographer performs a series of precise measurements and observations to build a complete picture of your baby's health. These key parameters include:

  • Fetal Biometry: These are the core measurements used to assess the baby's size.
    • Biparietal Diameter (BPD): The measurement of the diameter across your baby's head.
    • Head Circumference (HC): The measurement of the circumference of your baby's head.
    • Abdominal Circumference (AC): The measurement around the baby's abdomen. This is particularly important for assessing weight and growth.
    • Femur Length (FL): The measurement of the baby's thigh bone, which reflects their length.
  • Estimated Fetal Weight (EFW): The sonographer inputs the BPD, HC, AC, and FL measurements into a complex formula to calculate an estimated weight for your baby.
  • Amniotic Fluid Index (AFI): The sonographer measures the depth of the amniotic fluid in four quadrants of the uterus. This assessment is vital to ensure there is enough fluid to cushion the baby and allow for healthy development.
  • Placental Position and Appearance: The location, thickness, and overall appearance of the placenta are checked to ensure it is functioning correctly and not positioned in a way that could complicate delivery (e.g., placenta previa).
  • Fetal Lie/Presentation: The scan determines the baby's position in the womb—whether they are head-down (cephalic), feet-down (breech), or sideways (transverse).

Why This Test

The information gathered during the scan serves several critical purposes in managing the health of your pregnancy:

  • To confirm that the baby is growing at a consistent and healthy rate.
  • To get an ultrasound to check baby's weight and screen for conditions like growth restriction or macrosomia.
  • To monitor the baby's overall well-being by observing movement and Doppler blood flow.
  • To assess the level of amniotic fluid, which is a key indicator of fetal health.
  • To help your obstetrician plan the timing and mode of delivery if any growth-related issues are detected.
  • To track development over time through a serial growth scan in pregnancy, where scans are repeated every few weeks to map a growth curve.

When and Who Needs to Take an Ultrasound Growth Scan?

The Ultrasound Growth Scan is most commonly performed during the third trimester of pregnancy, typically between 28 and 36 weeks of gestation. While it can be a part of routine prenatal care, it is particularly recommended for specific situations.

Your doctor may recommend this scan if you fall into any of the following groups:

  • Routine Monitoring: Many obstetricians recommend a growth scan as a standard check-in during the third trimester.
  • High-Risk Pregnancies: Mothers with pre-existing medical conditions such as diabetes, high blood pressure (hypertension), or autoimmune disorders may require one or more growth scans to monitor fetal health closely.
  • Multiple Gestations: If you are expecting twins, triplets, or more, regular growth scans are essential to ensure each baby is growing at a healthy rate.
  • Concerns About Fetal Size: If measurements from a physical examination suggest the baby may be smaller (small for gestational age) or larger (macrosomia) than expected.
  • Previous Scan Findings: To follow up on any findings from earlier scans, such as the Anomaly Scan, that require further monitoring.
  • Decreased Fetal Movement: If you have noticed a change or reduction in your baby's movements.

Benefits

Benefits of Taking the Test

An Ultrasound Growth Scan at Cadabam's Diagnostics offers significant benefits:

  • Provides Reassurance: Seeing your baby and receiving a report that confirms normal growth can provide immense comfort and reassurance to expectant parents.
  • Early Detection of Issues: The scan can identify potential concerns early, such as Intrauterine Growth Restriction (IUGR), where the baby is not growing as expected, or macrosomia, where the baby is significantly larger than average. This allows your medical team to intervene or monitor more closely.
  • Informed Decision-Making: The results empower your obstetrician with the data needed to make the best decisions for the remainder of your pregnancy and for planning a safe delivery.
  • Placental Health Check: The Doppler assessment provides vital, non-invasive insight into how well the placenta is supporting the baby.

Illnesses Diagnosed with Ultrasound Growth Scan

It's important to clarify that a growth scan doesn't typically "diagnose" an illness in the traditional sense. Instead, it is a powerful screening tool that identifies conditions and risk factors that require careful monitoring or further intervention. These include:

  • Intrauterine Growth Restriction (IUGR): When the EFW is below the 10th percentile for gestational age.
  • Macrosomia: When the EFW is above the 90th percentile for gestational age, which can have implications for delivery.
  • Oligohydramnios: A condition where there is an abnormally low level of amniotic fluid.
  • Polyhydramnios: A condition characterized by an excess of amniotic fluid.
  • Placental Insufficiency: Indicated by abnormal Doppler flow measurements in the umbilical artery, suggesting the placenta is not delivering enough blood and nutrients.

Preparing for test

Preparing for your scan is simple.

  • Clothing: Please wear comfortable, loose-fitting two-piece clothing (like a top and pants/skirt). This allows the sonographer to easily access your abdomen without you having to fully undress.
  • Hydration: For a fetal growth scan in third trimester, a full bladder is not usually necessary as it is for earlier pregnancy scans. However, it's always a good practice to stay well-hydrated. Please follow any specific instructions provided by the Cadabam's Diagnostics team when you [Link to: Book an Appointment Page].

Pre-requisites

  • A doctor’s referral or prescription is generally required to ensure the scan is medically indicated.
  • Please bring any reports from previous pregnancy scans (like your NT scan or Anomaly scan) with you. This allows our radiologist to compare findings and track growth accurately.

Best Time to Take the Ultrasound Growth Scan

The scan is usually performed between 28 and 36 weeks of gestation. If your doctor has recommended a serial growth scan in pregnancy to track a specific concern, these may be scheduled every 2 to 4 weeks, depending on your individual clinical situation.

Eligibility

The Ultrasound Growth Scan is a safe procedure that can be performed on any pregnant woman when advised by her healthcare provider. There are no contraindications based on maternal health or age.

Procedure for Taking an Ultrasound Growth Scan

Our team at Cadabam's Diagnostics is committed to making your experience comfortable and informative. Here is what you can expect during the procedure:

  • Step 1: You will be welcomed into our scanning room and asked to lie comfortably on your back on an examination table. A wedge may be placed under your hip to ensure optimal blood flow.
  • Step 2: Our trained sonographer will apply a clear, water-based gel to your abdomen. This gel is harmless and helps eliminate air between your skin and the transducer, ensuring the clear transmission of sound waves.
  • Step 3: The sonographer will gently press a small, handheld device called a transducer against your skin and move it over your abdomen. You may feel light pressure, but the procedure is painless.
  • Step 4: As the transducer moves, real-time images of your baby will be displayed on a monitor, which you will be able to see. The sonographer will be taking various measurements during this time. The entire procedure typically takes about 20-30 minutes to complete.

Caution Before Taking the Test

There are no significant cautions to be aware of before an Ultrasound Growth Scan. If at any point during the scan you feel uncomfortable, dizzy, or need to change position, please do not hesitate to inform the sonographer.

Test Results

Here is your information structured into a clear table format:

Finding / ObservationDescription General Interpretation / Significance
BPD, HC, AC, FLMeasurements of the baby's head (Biparietal Diameter, Head Circumference), abdomen (Abdominal Circumference), and thigh bone (Femur Length).These values are compared to standard growth charts. They help determine if the baby's size and the proportion of different body parts are appropriate for its gestational age.
Est. Fetal Weight (EFW)A calculated weight based on the key biometry measurements.This gives a comprehensive estimate of the baby's size. It is the primary tool used to screen for potential growth issues like IUGR (small for gestational age) or macrosomia (large for gestational age).
Amniotic Fluid Index (AFI)A quantitative measurement of the fluid pockets around the baby to estimate the total volume.This indicates if there is a healthy amount of amniotic fluid. Low fluid (Oligohydramnios) or high fluid (Polyhydramnios) can be signs of underlying issues and require monitoring.

FAQs

Is the Ultrasound Growth Scan safe for my baby?

Yes, it is considered extremely safe. The procedure uses non-ionizing sound waves, not radiation. Decades of extensive use in obstetrics have shown no evidence of harmful effects on the mother or the developing baby.

How accurate is the ultrasound to check the baby's weight?

The ultrasound to check baby's weight provides a very good estimate, but it is not an exact measurement. While it is the best and safest non-invasive tool available for assessing fetal size, the final calculated weight can have a margin of error of about 10-15% in either direction.

When will I get my growth scan results?

At Cadabam's Diagnostics, we pride ourselves on efficient reporting. A specialized radiologist will carefully review the images and prepare a comprehensive report, usually on the same day. Our staff will inform you of the exact turnaround time when you have your scan.

What is the growth scan ultrasound price at Cadabam's Diagnostics?

We are committed to providing transparent and affordable diagnostic services. For the most current growth scan ultrasound price and information on any available prenatal packages, please contact our front desk directly or visit our online pricing page.

What if my baby's growth is found to be slow?

If the scan suggests that your baby's growth is slower than expected (IUGR), it is important not to panic. Your doctor will discuss the findings with you in detail. This finding often leads to a plan for closer monitoring, which may include more frequent check-ups and serial growth scans to track the growth pattern and ensure your baby's continued well-being.

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