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What you need to know before your MEG exam

  • You may be requested to arrive sleep-deprived, as it helps us record your brain activity during different states such as awake, drowsy, and sleep.
  • You can have a regular meal before the scan.
  • Don’t forget to bring your rescue medication with you in case you need it.

Avoid any caffeinated drinks prior to your scan.

No jewelry, hearing aids, hairpins, underwire bras and other metal accessories.

Electronic devices are not permitted during the exam or in the exam area.

Wash your hair prior to the exam, avoiding conditioner and styling products.

Avoid wearing makeup, using lotions or creams and remove nail polish.

Take medications as prescribed and bring rescue medication.

What to expect during MEG scan

The MEG exam typically lasts 3-5 hours, which includes the preparation and placement of EEG. We provide several breaks throughout the procedure for your comfort.

  • When you arrive, our team will take you to the MEG Lab where they will go over the procedure with you.
  • You may be asked to change into a patient gown for the exam. We provide sheets and blankets to ensure your comfort.
  • Before starting the MEG scan, EEG leads and other electrodes may be placed on your head, depending on the specific data we need.
  • The MEG technician will guide you into the scanning room and assist you in positioning your head correctly for the scan.
  • A special helmet containing several hundred MEG sensors will be placed around your head. Your face will not be covered during the scan.
  • Once you are comfortably positioned, you may experience the following:
    • You may be asked to lie quietly or even allowed to fall asleep.
    • You may be requested to listen to sounds, view images on a screen, and move certain parts of your body.
    • You may receive a mild electrical stimulation to your hands or feet.
    • It is important to keep your head as still as possible during these times.
    • Once the scan is complete, we will assist you in safely exiting the scanner.

Important: Please inform us if any of the following apply to you

  • You wear braces, a permanent retainer or permanent makeup tattoos.
  • You have a medical implant, such as a pacemaker, vagus nerve stimulator (VNS), programmable ventriculoperitoneal (VP) shunt or cochlear implant.

MEG is highly sensitive to metal, and these items can potentially interfere with the scan. By notifying us about them, our team can provide you with further guidance.

Patient FAQs

1. Can I resume my daily activities right after a clinical MEG scan?

Absolutely. Clinical MEG scans are typically conducted without the need for sedation, which means you can return to your regular daily activities immediately after the MEG scan.

2. What is the typical duration of a clinical MEG scan?

A clinical MEG scan lasts 3 to 5 hours. It's worth mentioning that the MEG scan itself is divided into several short sessions. Participants are only required to remain still during these brief sessions. Between sessions, participants are encouraged to rest and, if necessary, take short breaks to move around.

3. What can I expect after the MEG scan?

After the scan, our team will process the data, and you will be informed about the results. Your healthcare provider will discuss the findings with you and provide further guidance.

4. What is the difference between clinical MEG and research MEG?

Clinical MEG is designed for diagnostic purposes and patient care, while research MEG involves studies focused on understanding brain function. The procedures and goals may differ between the two.

5. How can I access my MEG results, and who will explain them to me?

Your MEG results will be made available to you through your physicians who requested a MEG service. They will interpret and discuss the results with you, ensuring you understand the findings.

6. Is MEG covered by insurance, and what are the associated costs?

Insurance coverage for MEG may vary. Please check with your insurance provider to understand coverage, and our team can assist in providing information about associated costs.

7. Are there any ongoing or upcoming clinical trials or research projects involving MEG at UF Health? Can I participate in MEG research studies, and how can I get involved?

We regularly conduct research studies involving MEG. If you are interested in participating in MEG research studies, please reach out to our MEG Lab scheduling department and our website for information about ongoing and upcoming studies.

For further questions or to schedule an appointment, please contact our MEG Lab. Our team is here to assist you.