growth MRI what to expect

Overview

A growth MRI is a special imaging scan that takes detailed pictures of the brain and the pituitary gland. The pituitary gland is a tiny organ at the base of the brain that makes hormones, including growth hormone. This scan helps doctors look for reasons why a child is not growing as expected or why hormone levels may be off.

Yes. Growth MRI is a standard, safe test used when a doctor suspects a problem with growth or the pituitary gland.

Growth MRI is most often done for children and teenagers who are growing much slower than expected. It can also be used for adults being checked for pituitary conditions.

Symptoms

Common symptoms

• Being much shorter than other children the same age
• Growing less than about 2 inches (5 centimeters) per year
• Delayed puberty or no signs of starting puberty
• Unexplained headaches or vision problems
• Feeling tired or weak without a clear reason

Symptoms in children

• Growth that has slowed down or stopped
• Milestones like puberty happening later than usual
• A child's height falling far below the growth chart curve
• A child complaining of frequent headaches or trouble seeing at the sides

Symptoms in older adults

• Unexplained weight gain or loss
• Fatigue or low energy
• Changes in blood pressure or blood sugar
• Weakness in muscles or low bone density

Causes

Main causes

• The scan is not for a cause itself; it helps find problems in the pituitary gland or the brain around it.
• Possible issues include a small or underactive pituitary gland, a non-cancerous tumor, or changes in the brain structure.
• Sometimes no problem is found, which helps your doctor look for other reasons for slow growth.

Risk factors

• A family history of short stature or growth problems
• Certain genetic conditions
• Head injury or brain infection in the past
• Cancer treatments such as radiation to the head or brain

When to see a doctor

See a doctor urgently if:

• Sudden vision loss or double vision
• Sudden, very severe headache
• Seizures or fainting
• Weakness or numbness in any part of the body

Book a routine appointment if:

• Your child is much shorter than other children their age
• Your child has been growing little or not at all for several months
• Your child has not shown signs of puberty by late teenage years
• You or your child have ongoing symptoms like fatigue, headaches, or vision changes

Diagnosis

A doctor will first check your child's height, weight, and growth chart over time. They may also order blood tests to check hormone levels. If those tests suggest a problem with growth hormone, the doctor may refer your child to a specialist for a growth MRI. The MRI takes 3D images of the brain and pituitary gland to check for anything unusual.

Tests that may be done

• Growth MRI with a special scanner
• Blood tests for growth hormone and other hormones
• A hand X-ray called bone age to see how mature the bones are
• Physical exam and height/weight measurements

What to expect at your appointment

Before the scan, your child may be asked to remove any metal objects like jewelry, glasses, or hair clips. If contrast dye is needed, a tiny IV line will be placed. Your child may lie on a sliding bed that moves into the MRI machine. The machine makes loud tapping noises, so everyone gets earplugs or headphones. A parent is often allowed to stay nearby. The scan may take about half an hour, and your child will be asked to stay very still. Your doctor will review the images and talk with you about the results.

Treatment

Treatment after a growth MRI depends on what the scan shows. If no problem is found, the doctor may continue to monitor growth and development. If a cause is found, treatment is guided by a specialist, such as a pediatric endocrinologist or neurologist. Treatment is not started until the full picture is clear, including MRI results, blood tests, and clinical exam.

Self-care at home

• Help your child feel calm before the scan by explaining it in simple words.
• If contrast dye is used, give your child extra water after the test (if the doctor says it is okay).
• Keep a regular schedule of meals, sleep, and gentle activity to support overall health.

Medical treatments

Possible treatment approaches include hormone therapy, which may be needed if the pituitary gland makes too little growth hormone. If a tumor or other structural problem is found, treatment may involve medicines, radiation, or surgery. Any treatment plan will be tailored to the exact cause and should be discussed fully with your healthcare team.

When is surgery considered?

Surgery is only considered if the MRI shows a tumor or other physical problem that can be safely removed. Your child's specialist team will decide if surgery is needed, based on the type and location of the problem.

Living with this condition

After a growth MRI, your child can usually return to normal activities right away. There are no special restrictions unless the doctor says otherwise. The main thing is to attend follow-up appointments so the doctor can check growth over time.

Lifestyle tips

• Encourage regular physical activity and outdoor play.
• Make sure your child gets enough sleep every night.
• Keep a growth chart or notes to share with your doctor.
• Celebrate your child's strengths and interests beyond height.

Diet and exercise

A healthy, balanced diet helps children grow and stay strong. Foods rich in protein, calcium, vitamin D, and other nutrients are important for bones and overall health. Gentle exercise like walking, swimming, or playing sports is safe and supports a healthy body.

Mental health and emotional wellbeing

Waiting for MRI results can feel stressful for both you and your child. It is normal to feel anxious or worried. Talk openly with your child, answer questions honestly, and remind them that many growth issues are treatable. If you or your child feel very anxious, ask your care team for advice or counseling.

Prevention

You cannot prevent the underlying conditions that may cause growth problems. However, early recognition and timely referral for a growth MRI can make a big difference in managing any issues that are found.

Screening programmes

Routine growth measurements at well-child visits are a simple way to track your child's growth pattern. Keep your child's scheduled checkups, and mention any concerns to your doctor.

Complications

If left untreated

• If a growth hormone problem is not found early, a child may miss the chance to grow to their full expected height.
• A pituitary problem could affect other hormones and lead to other health issues over time.
• In rare cases, a tumor that presses on the brain or the optic nerves could cause vision problems if not treated.

Long-term outlook

The outlook is often very good. Many children who have a growth MRI find that nothing is wrong, and their growth pattern simply follows its own course. Even when a problem is found, most causes are treatable with safe and effective methods. With the right care, your child can lead a healthy, active, and full life.

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