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Helping Your Loved One Stay Calm During a PET or FDG Brain Scan

A PET or FDG brain scan can feel frightening and confusing for someone living with dementia. The combination of unfamiliar equipment, a new environment, and the need to stay still can trigger anxiety. But with careful preparation, a calm approach, and the right words, you can help your loved one feel safe and supported through the entire process. This guide gives you concrete steps, phrases to use, and ways to adapt for different situations so you both can get through the scan with less stress.

Key points

  • Your calm presence is the most powerful tool to reduce your loved one's anxiety during a PET scan.
  • Prepare ahead by calling the imaging center, packing a comfort kit, and using simple, reassuring language.
  • Avoid surprises, arguments, and rushing; these will increase agitation.
  • Use distraction and redirection with familiar objects or a small snack instead of logic or reasoning.
  • Validate your loved one's feelings ('I see you are worried') rather than correcting or contradicting them.
  • After the scan, offer immediate comfort and a positive reward to create a good association.

Why the scan itself can cause anxiety

For a person living with dementia, a PET scan involves many elements that can feel threatening or confusing. The machine is large and unfamiliar, the room is often cold and clinical, and the procedure requires lying still for a period of time. Your loved one may not understand why they are there or what is expected of them. They may feel their personal space is being invaded, especially when a stranger (the technologist) comes close to insert an IV or position them on the table. The source passages explain that confusion and difficulty understanding are common reasons people with dementia feel anxious. When they cannot make sense of what is happening, their brain interprets the situation as a threat, and anxiety rises.

How your own feelings affect the situation

Your loved one will pick up on your emotions, even if you try to hide them. If you are feeling frustrated, rushed, or anxious yourself, they will sense that and their own anxiety will increase. The source material emphasizes that people with dementia have lost the ability to reason, so they rely heavily on emotional cues from those around them. Maintaining a calm demeanor, using a soft voice, and avoiding sudden movements are essential. Your calm presence is the single most powerful tool you have to help them feel safe. Taking a few deep breaths before you enter the imaging center can make a real difference.

The importance of preparation and reducing surprises

Surprises are especially difficult for someone with dementia. When they are surprised, their immediate reaction is often fear or agitation, which is the last thing you want when they need to lie still in a scanner. The source passages note that knowing what to expect and reducing the fear factor can help the person get a good scan. Preparation means talking through the steps beforehand in simple, reassuring terms, and also preparing the environment to be as calm as possible. This includes avoiding caffeine before the scan (as it can worsen anxiety), keeping the waiting area quiet, and making sure your loved one has used the bathroom and is comfortable before the procedure begins.

General caregiving information, not medical advice. Check medications and major care changes with your clinician.

Step-by-step

  1. Before the appointment, call the imaging center and explain that your loved one has dementia. Ask if they can offer a longer appointment slot, a quieter waiting area, or a technologist experienced with dementia patients. This proactive step reduces pressure on the day of the scan.

  2. On the morning of the scan, keep the routine as normal as possible. Avoid rushing. Use a gentle tone of voice and say something like, 'We are going to a special place today where they will take a picture of your brain to help the doctor understand how to help you feel better.' Keep the explanation simple and positive.

  3. In the car or on the way, use a calm, reassuring voice. If your loved one asks repetitive questions about where they are going, answer each time with the same simple phrase. Avoid giving too much detail. You can say, 'We are going to see some nice people who will help us.'

  4. When you arrive at the imaging center, stay close to your loved one. Hold their hand if they are comfortable with touch. Use a soft voice and avoid raising your voice or making sudden movements. The source material advises maintaining a calm demeanor and taking deep breaths yourself to stay centered.

  5. If your loved one becomes agitated while waiting, try to distract and redirect their attention. Pull out a familiar object, like a photo from your wallet or a small snack they enjoy. The source passages suggest that a small snack or a fun activity can divert attention from anxiety. Avoid using logic or reasoning, as the part of the brain that handles reasoning is not working the same way.

  6. When it is time for the scan, explain each step in simple terms as it happens. For example, 'Now they are going to put a little medicine in your arm to help the camera see your brain. It might feel cool.' Use a gentle touch if they are okay with it. The source material emphasizes that validating their feelings is helpful: 'I see you are worried about the machine. That is okay. I am right here.'

  7. During the scan itself, if you are allowed to stay in the room, sit where your loved one can see you. Talk to them in a calm, steady voice. You can say, 'You are doing very well. Just a little longer. I am right here.' If you cannot stay in the room, ask the technologist to keep you informed and to let your loved one know you are nearby.

  8. After the scan, offer immediate comfort and a reward. The source material suggests using a positive incentive, such as, 'After we are done, we can go get some ice cream.' This gives your loved one something to look forward to and reinforces that the experience is over and they did well.

What not to do

  • Do not rush your loved one or try to hurry them through the process. Rushing increases their confusion and anxiety. Instead, allow ample time for each step and use a patient, unhurried manner.

  • Do not argue or use logic to explain why they need the scan. Reasoning is not effective when the brain is affected by dementia. Arguing will only escalate their distress. Instead, validate their feelings and redirect their attention to something comforting.

  • Do not surprise them with the details of the procedure at the last minute. Surprises trigger a knee-jerk reaction of fear. Instead, prepare them with simple, reassuring information ahead of time and repeat it calmly as needed.

  • Do not show your own frustration or anxiety. Your loved one will pick up on your emotions and become more agitated. Instead, take a few deep breaths, put your frustrations aside, and focus on being a calm, steady presence.

  • Do not ignore signs of physical discomfort, such as needing the bathroom, being thirsty, or being too cold. Unmet physical needs can worsen anxiety. Before the scan, check the basics: have they used the bathroom? Are they comfortable? Are they hungry or thirsty?

Practical tools

  • Simple script for explaining the scan

    Use these exact words: 'We are going to a special place where they take pictures of your brain. It helps the doctor know how to help you. You will lie on a soft bed, and a camera will take pictures. I will be right there with you the whole time. It will be okay.' Repeat this script calmly as many times as needed.

  • Comfort kit for the waiting room

    Pack a small bag with: a familiar photo album, a favorite small snack (like crackers or a piece of fruit), a soft blanket or sweater, and a calming object like a stress ball or a small stuffed animal. The source material suggests that looking through familiar photos can be soothing and divert attention from anxiety.

  • Pre-appointment checklist for the caregiver

    Before the day of the scan: (1) Call the imaging center to request a longer appointment and a quiet waiting area. (2) Confirm that your loved one has fasted as instructed (if required for the FDG scan) but offer clear fluids if allowed. (3) Avoid caffeine for 24 hours before the scan. (4) Plan to arrive 15-20 minutes early to avoid rushing. (5) Bring the comfort kit and any necessary documents.

  • Calming phrases to use during the scan

    Say these in a soft, gentle voice: 'You are doing so well.' 'I am right here.' 'Just breathe with me.' 'Almost done, you are amazing.' 'We will get ice cream after this.' Avoid phrases that sound like commands, such as 'You have to stay still' or 'Don't move.' Instead, use positive, reassuring language.

  • Post-scan reward plan

    Plan a small, enjoyable activity for after the scan, such as going to a favorite café, taking a short walk in a park, or listening to calming music at home. The source material emphasizes that having something to look forward to can reduce anxiety before the procedure and provide a positive association afterward.

Discuss with your clinician

Ask the doctor: 'Is there any medication that can be given before the scan to help my loved one stay calm, and what are the risks?'

Ask the doctor: 'Given my loved one's specific dementia type, are there any special precautions we need to take for the FDG or PET scan?'

Ask the doctor: 'What is the exact purpose of this scan for my loved one, and how will the results change their care plan?'

Ask the doctor: 'If my loved one becomes too agitated to complete the scan, what are our options? Should we try again another day, or are there alternative tests?'

Ask the doctor: 'Are there any dietary or medication adjustments needed before the scan (e.g., fasting, avoiding caffeine, holding certain medications)?'

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