Ultrasound in Pregnancy: What to Expect, Purpose, Procedure & Results

By Tagore Hospital
Posted June 15, 2025

Ultrasound in Pregnancy: What to Expect, Purpose, Procedure & Results

Introduction

Pregnancy is a beautiful stage of love and expectancy for the tiny life blossoming within. One important tool used in the entire journey is ultrasound imaging. It gives a live picture of the fetus to determine the health and progression of both the mother and the youngster. Is it one's first pregnancy or second or maybe third; it helps lessen fear and make the journey all the more rewarding.
In this article, pregnancy ultrasounds will be explained along with their purpose, procedures, types, and results, preparing one to understand what to expect during the appointment.

What Is the Purpose of Ultrasound in Pregnancy?

Ultrasound, also known as sonography, capitalizes on the high-frequency sound waves to form an image of the body interior-in this case, the uterus. Ultrasounds help in a series of different ways through pregnancy:

To confirm pregnancy and its location (and hence to avoid ectopic pregnancies)
Estimating gestational age and subsequently estimating the due date
Assessing the growth and development of the fetus
Checking for multiple pregnancies (twins, triplets, etc.)
Evaluation of placenta, amniotic fluid, and cervices
Detecting birth defects or genetic disorders
Checking fetal position before childbirth
Monitoring of fetal heartbeat and movement

Throughout pregnancy, the ultrasound might carry out sort of dual role: diagnostic and reassurance-based. They provide key information to would-be-brethren and health care providers alike.

What to Expect During Your Ultrasound Appointment

Usually, ultrasounds are done in your favorite imaging center or at the office of the expectant mom’s obstetrician. Expect the following: Arrival and Check-In: Sometimes, you might be requested to come early and complete some paperwork.

Preparation: Depending on your ultrasound and its timing, you may be advised to drink some water ahead of time so as to fill up the bladder. Having a full bladder is key because it lifts the uterus and helps in making clear images.
The Scan: You will be asked to lie down on an examination table in which special gel will be spread on the abdomen of yours, and the sonographer will use an instrument called a transducer, which would include images of the fetus.
Viewing the Baby: It is possible that the monitor might be turned toward you so that you may watch your baby live. The technician will definitely show you some key features like the head, limbs, and the heartbeat.
Duration: Usually 20 to 45 minutes. Sometimes it can take a little longer, and sometimes it finishes quickly, and it largely depends on how clear the images are and how cooperative the baby is!

Why Ultrasounds Are Important During Pregnancy

Ultrasounds are much more than a pick-me-up for parents-they are life-saving diagnostic tools. They allow doctors to:

Detect anomalies at an early stage and provide adequate counselling
Track the fetus and ascertain it is growing properly
Determine risk factors such as low amniotic fluid or placenta previa
Guide procedure like amniocentesis or external cephalic version
Plan delivery, especially when complications are foreseen

Offering real-time information, ultrasounds serve throughout pregnancy to ensure maternal and fetal well-being.

Types of Pregnancy Ultrasound Scans

Different ultrasound scans are performed at different times during pregnancy.
1. Transvaginal Ultrasound

This scan is usually done at the very beginning of pregnancy (actually it is before 10 weeks).
A probe is inserted into the vagina, which allows for a clearer image.
The ultrasound is usually to organize a pregnancy, see some details regarding the uterus, and to see the heartbeat.

2. Regular 2D Ultrasound

This is probably the most common type of scan.
This scan will show flat (2D) images of the baby.
Normally, a scan is at 12 weeks (dating scan), and at 20 weeks (anatomy scan).

3. 3D and 4D Ultrasound

The depth of 3D images offers more detailed and, "truer" images compared to the flat 2D images.
4D adds motion (developing video).
3D and 4D ultrasounds are typically requested for the anatomical value, or if asked to provide keepsakes or mementos.

4. Doppler Ultrasound

Doppler ultrasound uses sound waves to assess blood flow.
In this case blood flow in umbilical cord, placenta and the baby's heart.
Typical use of Doppler ultrasound is to assess fetal growth or blood flow issues at the same time of fetal growth.

5. Growth Scan (3rd trimester)
● Growth scans occur much further along in pregnancy to assess a number of things: growth of fetal structures and positioning, while depending on the circumstance some growth scans can assess placental function and amniotic fluid levels.

You can read also:- How to Stop Vomiting in Pregnancy Home Remedies?

Tips for Preparing for Your Pregnancy Ultrasound

To make the most of your ultrasound appointment, consider these tips:
Follow Instructions. If asked to drink water, do so, usually 24 to 32 ounces an hour before the appointment.

Wear Comfortable Clothing. You’ll likely need to expose your belly, so wear a two-piece outfit.
Bring Support. Your partner or a loved one can attend most scans, making the experience more special.
Ask Questions. Don’t hesitate to ask the technician or doctor about what you’re seeing.
Stay Relaxed. The baby can pick up on your stress. Take a few deep breaths if you feel anxious.

What Is the Procedure of Ultrasound in Pregnancy?

The general procedure for a pregnancy ultrasound includes:

Preparation: Depending on how far along you are, you may need a full bladder.
Positioning: You’ll lie back on an examination table.
Application of Gel: A water-based gel is applied to the abdomen to help sound waves travel better.
Transducer Use: The technician moves the transducer over the belly to capture images.
Measurement & Evaluation: Key areas like the head, limbs, spine, heart, and organs are measured and checked.
Documentation: Images and data are saved for the doctor to review.

In the early stages, a transvaginal ultrasound might be used, where a probe is gently inserted into the vagina for a clearer image.

Understanding Your Ultrasound Results

After the scan, a radiologist or OB-GYN will look at the images and measurements. Some results may be ready right away, while others take a day or two. Key elements in your report may include:
- Gestational age and estimated due date
- Fetal heart rate
- Presence of multiple babies
- Placental position and health
- Amniotic fluid levels
- Anatomical development (brain, spine, limbs, etc.)
If any abnormalities or concerns are found, your doctor may suggest follow-up scans or refer you to a maternal-fetal medicine specialist. However, it’s important to remember that many findings are just precautions and may not indicate serious issues.

Conclusion

At Tagore Hospital in Jaipur, we know that pregnancy is a very personal and transformative journey. Our skilled team of obstetricians, radiologists, and sonographers is dedicated to providing caring and modern care throughout your pregnancy.
Ultrasound scans play a vital role in ensuring both your health and your baby's growth. With cutting-edge imaging technology and a focus on your needs, we aim to make each ultrasound appointment not only thorough but also comforting and memorable for you and your family.
If you have any questions or want to schedule your pregnancy ultrasound, please reach out to us. At Tagore Hospital, your well-being is our top priority at every step.