Ultrasound of Uterine - Fetal Growth Restriction Scan
This non-invasive ultrasound scan uses high-frequency sound waves to evaluate the fetus, uterine environment, and placenta for signs of fetal growth restriction (FGR), a condition where a fetus grows slower than expected for its gestational age. It is a key urogenital system imaging exam that does not use ionizing radiation or contrast agents, making it safe for routine use during pregnancy. The 30-minute procedure requires no special preparation and carries no claustrophobia risk, as it is performed with a handheld transducer placed on the lower abdomen.
This safe, radiation-free 30-minute ultrasound scan evaluates the fetus, uterus, and placenta to diagnose and monitor fetal growth restriction, a condition where a fetus does not grow at the expected rate for its stage of pregnancy.
Key facts at a glance
- Modality
- us
- Body part
- pelvis · uterine
- Ionizing radiation
- false
- Radiation dose
- 0
- Duration (min)
- 30
- Pregnancy safe
- true
- Pediatric safe
- true
- Breastfeeding safe
- true
- Claustrophobia risk
- none
- Metal implant safe
- safe
- Sedation
- none
- Result turnaround
- 24-48h
- Availability
- urgent
- Setting
- outpatient
- Cost tier
- low
What Is a Fetal Growth Restriction (FGR) Ultrasound Scan?
A fetal growth restriction (FGR) ultrasound scan is a specialized obstetric imaging exam that uses high-frequency sound waves to create real-time, detailed images of the developing fetus, uterine wall, and placenta. Unlike imaging tests that use ionizing radiation, this scan is completely safe for both the pregnant person and the developing fetus, as it does not expose either to harmful radiation or require injectable contrast agents. It is designed specifically to identify when a fetus is growing slower than the 10th percentile for its gestational age, a condition that can increase risks for pregnancy and birth complications if unmonitored.
Urogenital System Clinical Applications
This scan is a core tool for urogenital and obstetric care, used to assess uterine health, placental function, and fetal development as part of routine prenatal urogenital system monitoring. Clinical applications include diagnosing underlying causes of FGR such as congenital uterine abnormalities, placental insufficiency, or fetal urogenital tract defects that may impair growth, and tracking the progression of FGR over time to guide personalized care decisions. It also helps care teams evaluate how well the fetus is adapting to its uterine environment, including assessing amniotic fluid levels and blood flow through the umbilical cord and fetal organs to identify early signs of urogenital-related pregnancy complications.
What to Expect During Your Scan
The 30-minute scan requires no special preparation, such as fasting or a full bladder, and carries no risk of claustrophobia, as it is performed in an open exam room with no enclosed scanning equipment. A trained sonographer will apply a water-based gel to your lower abdomen to help the transducer pick up sound wave signals, then move a small handheld device across your skin to capture real-time images of your uterus, placenta, and fetus. You may be asked to hold your breath briefly during the scan to get clearer images, and the sonographer will share preliminary findings with you at the end of the exam before sending the full formal report to your obstetric care provider.
How to read the report
- Results reviewed by radiologist.
What Is This Procedure?
This ultrasound evaluates uterine, specifically fetus. No radiation exposure.
What Does It Show?
Detailed images of fetus and uterus and placenta. Part of the urogenital system.
Common Uses
This exam is commonly used to detect abnormalities, guide treatments, and monitor known conditions.
What to Expect
The procedure takes approximately 30 minutes.
Severe pain at procedure site
urgentWorsening severe pain with fever or other symptoms. Go to urgent care or ER.
Mild symptoms after procedure
promptMild discomfort or symptoms that don't improve. Contact your doctor.
This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 9, 2026. · Read our editorial policy