Ultrasounds are valuable tools to monitor a baby’s development.
Ultrasounds are tests that help your health care provider check your baby’s health and development. Dr. Justin Moore, perinatologist and maternal-fetal medicine specialist, answers common questions about ultrasound.
How does an ultrasound work?
During an ultrasound, high-frequency sound waves are sent through a handheld device called a “transducer.” The sound waves bounce off your baby and the organs inside your body. The transducer receives the sound waves, and the ultrasound machine shows a real-time image you can see on the screen.
Are ultrasounds safe for my baby and me?
“Yes, ultrasound is considered safe for pregnant mothers and their babies,” Dr. Moore said. “The machines use sound waves, not radiation like with X-rays. And we have ultrasound machines specifically designed for use in obstetrics. These devices minimize risk and ensure the well-being of both mother and child during examinations.”
How many ultrasounds should I expect?
The number of pregnancy ultrasounds can vary, but 3 scans are typical.
Dr. Justin Moore
When should I expect to have my first ultrasound?
An early dating ultrasound takes places around 6 to 10 weeks of gestation, soon after a woman realizes she’s missed her period. “This early scan is used in conjunction with the date of the last menstrual period to help accurately determine the baby’s due date,” Dr. Moore explained. “Additionally, this ultrasound can reveal if there is a twin pregnancy.”
When should I have the second test?
The second ultrasound, called a first trimester screening, usually happens around 12 to 13 weeks of pregnancy. “The main goal is to check for any serious birth defects, like problems with the baby’s heart or brain, a cleft lip, clubfoot or signs of Down syndrome,” Dr. Moore said. “This test gives important information about the baby’s growth and helps us find any possible problems early in the pregnancy.”
When should I have the third ultrasound?
The next standard test, an anatomy ultrasound, happens between 18 and 20 weeks. This examination often includes a vaginal ultrasound for a more detailed assessment. “During this comprehensive scan, we look at the baby from head to toe,” Dr. Moore shared. “The test helps us determine the baby’s sex and provides an opportunity to identify any issues that may need to be monitored as the pregnancy progresses. In addition to assessing the baby, the ultrasound is also used to check the placenta, cervix and ovaries to ensure they appear normal.”
Will I need any additional ultrasounds?
Your health care provider will only recommend more scans if there are specific concerns that require more monitoring.
“Ultrasound is a valuable tool with numerous applications throughout pregnancy,” Dr. Moore said. “The tests also provide peace of mind for expectant parents. When they see the baby on the screen and hear the heartbeat, it’s comforting to know the pregnancy is coming along well.”
Visit the Neonatal and Perinatal Medicine website to learn more and schedule an appointment.
