Understanding the Anatomy Scan: A Guide for Intended Parents Using a Gestational Carrier

As you move through your journey of parenthood with the support of a gestational carrier, there are several key milestones along the way. One of the most significant is the anatomy scan, typically performed around the halfway point of pregnancy. For many intended parents, this is a powerful moment — the first time you’ll see detailed images of your baby and gain insight into their development.

At Nascency, we understand how new and unfamiliar this process can feel, especially if this is your first experience with surrogacy. This guide is designed to help you feel informed, prepared, and confident in understanding the purpose and process of the anatomy scan, and how you can remain meaningfully involved even when you’re not the one physically carrying the pregnancy.

What Is the Anatomy Scan? 

The anatomy scan is a detailed ultrasound typically performed between 18 and 22 weeks of pregnancy. It is sometimes referred to as the “mid-pregnancy ultrasound” or “level 2 ultrasound.” This scan plays an important role in evaluating your baby’s growth and development and is a routine part of prenatal care — regardless of whether a pregnancy is carried by a gestational carrier. 

Unlike earlier ultrasounds, which primarily confirm the pregnancy and monitor early development, the anatomy scan involves a full, head-to-toe examination of your baby’s physical structures.

What the Anatomy Scan Evaluates

The scan provides a comprehensive look at your baby’s anatomy and surrounding environment. The following are typically assessed:

Growth Measurements

The technician will take measurements of your baby’s head (biparietal diameter, head circumference), abdomen (abdominal circumference), and long bones (such as the femur). These are used to estimate gestational age and fetal weight.

Brain and Skull

The scan checks the shape and structure of the brain and skull, ensuring normal development.

Spine

The alignment and closure of the spine are assessed to look for any abnormalities, such as spina bifida.

Heart

The four chambers of the heart are examined to ensure proper structure and function. Blood flow through the heart and major vessels is also evaluated.

Abdomen and Organs

The stomach, kidneys, bladder, and liver are all visualized to ensure they are developing normally and located in the proper position.

Limbs

Arms, legs, hands, and feet are checked for appropriate bone length, structure, and movement.

Facial Features

The scan typically includes a look at the face to assess features and rule out cleft lip or other visible differences.

Placenta

The position and function of the placenta are checked to make sure it is not blocking the cervix (a condition called placenta previa) and that it appears healthy.

Amniotic Fluid Levels

The amount of fluid surrounding the baby is measured, as too much or too little can signal potential concerns.

Cervical Length

This is often assessed to help predict the risk of preterm labor.

Fetal Sex (Optional)

If you choose to know the sex of your baby and it hasn’t already been revealed through earlier testing, it can usually be seen during this scan.

Your Role as Intended Parents

Even though you are not physically undergoing the scan, you are a central part of this experience. There are several ways for you to be involved in the anatomy scan process:

Attending In Person

If logistics allow, you may be able to attend the appointment with your gestational carrier. This can be an emotional and meaningful experience as you watch your baby’s movements and features in real time on the ultrasound screen. You may even be able to hear the heartbeat and speak directly with the sonographer or physician about what’s being seen.

Joining Virtually

Many clinics are equipped to offer a video call during the scan so you can be present even if you’re not local. It’s a great option to stay connected, ask questions, and experience the moment alongside your gestational carrier.

Receiving a Post-Scan Update

If you’re unable to attend or join virtually, your medical team — or your Journey Advocate at Nascency — will provide you with a detailed update. This may include images, measurements, a summary of findings, and guidance on next steps if any follow-up is needed.

Who Will Be Involved in the Appointment

Gestational Carrier

As the person carrying the pregnancy, your gestational carrier will be present for the scan.

Ultrasound Technician (Sonographer)

A trained medical professional will conduct the scan, take measurements, and collect images.

Physician or Maternal-Fetal Medicine (MFM) Specialist

Depending on the clinic and any risk factors, a doctor may review the scan in real time or later and provide a report. If anything out of the ordinary is observed, a specialist may be brought in to offer additional guidance. 

You (Intended Parent[s])

Your presence may be in person, via video, or through post-scan communication. Whatever the format, your involvement is important and supported.

What Happens After the Scan

After the scan, a doctor will review the findings. In most cases, the anatomy scan confirms that the baby is growing appropriately and that all visible structures appear normal. 

If anything unusual is detected, it doesn’t necessarily mean there is a serious problem. Sometimes, repeat scans or more specialized imaging is recommended to gather more information. Your Nascency team will walk you through any follow-up care, provide emotional support, and answer questions at every step.

Preparing for the Scan Emotionally and Logistically

Discuss the Plan in Advance

Coordinate with your gestational carrier and your Nascency care team about how you’d like to participate in the scan.

Understand the Range of Emotions

It’s common to feel excitement, nervousness, or even overwhelm. Whether this is your first glimpse of your baby or one of many, it’s a big moment. 

Prepare Questions

If you’re attending live (in person or virtually), feel free to ask questions about what you’re seeing on screen. Sonographers typically explain what they’re viewing, though detailed results are usually given by a physician.

Request Images or Keepsakes

Many clinics provide ultrasound photos or video clips. These can be a cherished part of your baby’s story.

Final Thoughts from Nascency

The anatomy scan is one of the most significant medical check-ins during your pregnancy journey. It not only confirms important aspects of your baby’s health, but also offers a memorable opportunity to connect with the life that’s growing. Whether you’re watching on a screen or hearing about it afterward, this is your moment as a parent.

At Nascency, we’re here to make sure you feel informed, supported, and connected throughout every milestone. If you have questions or would like help coordinating your participation in the scan, your care coordinator is here for you.