Please read this leaflet carefully to help you and your child prepare for the MIBG scan. The procedure takes place over two days.
What is an MIBG scan?
An MIBG scan is used to identify and pinpoint certain types of abnormal tissues in the body. It involves an injection of a radioactive isotope (Iodine-123 MIBG) and a CT scan for extra detail. The MIBG isotope is visible to special scanners, allowing doctors to see areas of interest in the body.
Important Information for Parents/Guardians
Pregnancy: It is recommended that those who are pregnant avoid prolonged close contact with MIBG patients for two days after the procedure. If you are pregnant or think you could be, please inform staff. Alternative childcare arrangements should be made if possible.
Pregnancy Status (Patients): If the patient is female and aged 11 or older, regulations require us to ask about their menstrual cycle and the possibility of pregnancy before proceeding.
Preparation: Potassium Iodide
Potassium iodide is given to protect your child’s thyroid gland from radiation. Three doses must be taken as instructed by your clinical team:
- At least 1 hour before the MIBG injection.
- The evening of the injection day (Day 1).
- After the MIBG scan (Day 2).
If not already prescribed, these will be provided on the ward on Day 1. Capsules can be opened and mixed with water if your child cannot swallow them whole.
Day 1: The Injection
You will attend a ward (usually Ward 2B or 14 at the RVI). A cannula will be inserted, or an existing port/central line used. The injection is given slowly, and you can stay with your child to comfort them. Afterward, if not staying in the hospital, you are free to go home until the following day.
Day 2: The Scan
If sedated: Your child must fast (no food/drink) for four hours before the planned start time. You will return to the children’s ward, and sedation will be given orally. Once drowsy, you will be brought to Nuclear Medicine for the scan.
If not sedated: Come directly to the Nuclear Medicine Department (Level 2, Leazes Wing, RVI) at your scheduled time. Wear loose clothing without metal zips or clips.
The Procedure: Your child will lie on a bed for pictures (up to 30 mins), followed by a SPECT scan where the machine rotates (25 mins). Finally, a quick 2-minute CT scan is performed. It is vital your child remains very still throughout.
Risks and Contact Info
Radiation risks are low, and doses are adjusted for the child’s weight. The benefits of the diagnostic results outweigh the risks.
Nuclear Medicine RVI: 0191 282 4038 (Mon-Fri, 9:00am – 4:30pm). Level 2, Leazes Wing, Royal Victoria Infirmary, NE1 4LP.