Last Updated on November 27, 2025 by Bilal Hasdemir

Getting a PET scan can be scary for many. Over 2 million PET scans happen every year in the U.S. They help find many health issues.

How do you stay calm during a PET scan? It’s important to relax, because feeling anxious or moving too much can mess up the images. This might mean you need to do the scan again.

Preparation is key for a good experience. Knowing what to expect and how to stay calm helps a lot.

Key Takeaways

• Understand the PET scan procedure to reduce anxiety.
• Follow specific pet scan prep instructions provided by your healthcare provider.
• Practice relaxation techniques before and during the scan.
• Stay informed about what to expect during the scan.
• Communicate with your healthcare team about any concerns.

Understanding PET Scans: What They Are and Why They’re Done

Positron Emission Tomography, or PET, scans are advanced imaging tests. They help doctors find and manage health issues. These scans show how active the body’s cells are, helping doctors spot problems.

The Science Behind PET Imaging Technology

PET imaging uses tiny amounts of radioactive tracers. These tracers go into the body and gather in active areas, like cancer cells. The PET scanner picks up these signals, making detailed images of the body’s inside.

The science of PET scans comes from nuclear medicine. The main tracer used is Fluorodeoxyglucose (FDG). Cancer cells take in more glucose than normal cells, so they show up more on PET scans.

Common Medical Reasons for Ordering PET Scans

PET scans are used for many medical reasons, including:

• Cancer diagnosis and staging
• Monitoring cancer treatment response
• Detecting neurological disorders such as Alzheimer’s disease
• Assessing heart disease and viability of heart tissue

PET scans give doctors insights into the body’s metabolic activity. This helps them make better decisions for patient care.

Differences Between PET, CT, and PET-CT Combination Scans

PET scans look at metabolic activity, while CT scans show detailed body structures. A PET-CT scan combines both, giving a full picture of the body’s function and structure.

The main differences are:

Scan Type	Primary Use	Information Provided
PET Scan	Metabolic activity assessment	Functional information about tissue metabolism
CT Scan	Anatomical imaging	Detailed structural images of the body’s internal organs
PET-CT Scan	Combination of metabolic and anatomical imaging	Both functional and structural information, improving diagnostic accuracy

Knowing the differences between these scans is key. It helps both patients and doctors make the best choices for testing.

Common Fears and Misconceptions About PET Scans

Getting ready for a PET scan can be scary. This is because of common fears and wrong ideas about it. PET scans are key for doctors to diagnose, but wrong beliefs can make patients worried.

Addressing Claustrophobia and Confined Space Anxiety

Many worry about claustrophobia, or fear of small spaces. PET scans need patients to lie in a scanner, which can feel too tight. To help, some places have open-bore scanners or offer ways to relax.

If claustrophobia is really bad, talking to your doctor is a must. They can help with anxiety, like giving medicine before the scan.

Understanding Actual Radiation Exposure Levels

Some fear the radiation from PET scans. It’s true, there’s some radiation, but it’s controlled and safe for tests.

Radiation Source	Effective Dose (mSv)
PET Scan (Typical)	4-7
Chest X-ray	0.1
Average Annual Background Radiation	2.4

Separating Facts from Fiction About PET Scan Procedures

Wrong ideas about PET scans can cause extra worry. Some think the scan hurts or you’re trapped in a small space. But, PET scans don’t hurt, and many scanners are wider to make you feel less trapped.

• PET scans are typically painless.
• The procedure involves lying on a table that slides into the scanner.
• Communication with the technologist is possible during the scan.

Knowing the truth can help patients feel less scared about PET scans. This makes the whole experience easier.

Preparing for a PET Scan: Essential Steps

Getting ready for a PET scan is key to getting good results and a smooth process. Doing the right steps can make a big difference in the scan’s quality and your experience.

Timeline: What to Do 48-72 Hours Before Your Scan

Start preparing for your PET scan 48-72 hours in advance. This means changing your diet and checking your medications.

• Start a low-carb diet as advised.
• Tell your doctor about all your meds and supplements.
• Don’t do too much exercise.

Dietary Restrictions and Low-Carb Guidelines

Eating a low-carb diet is key before a PET scan. Foods with lots of carbs can mess up the scan images. This makes them less clear.

Food Category	Recommended	Avoid
Meat	Lean meats like chicken, fish	Processed meats with added sugars
Vegetables	Leafy greens, broccoli	Corn, peas, carrots
Fruits	Berries, citrus fruits	Bananas, grapes, apples

Medications and Supplements to Avoid

Some meds and supplements can mess up PET scan results. Always tell your doctor what you’re taking.

“It’s essential to consult with your doctor about any medications or supplements you’re taking before undergoing a PET scan. Some may need to be adjusted or stopped temporarily to ensure accurate scan results.”

Here are some common things to avoid or adjust:

• Metformin for diabetes
• Certain antidepressants
• Vitamins and supplements high in sugar or carbs

By following these tips, you can help make your PET scan go smoothly. This ensures the best results for you.

PET Scan Diet: What to Eat and What to Avoid

Diet is very important for a PET scan’s success. Knowing what to eat and avoid is key. The food you eat before a PET scan can change the quality of the images. So, preparing your diet is a big part of the process.

Recommended Foods for 24 Hours Before Your Scan

In the 24 hours before your PET scan, eat foods low in sugar and carbs. This means:

• Lean proteins like chicken, fish, and tofu
• Vegetables such as broccoli, spinach, and bell peppers
• Fruits like berries and citrus fruits
• Low-carb grains like brown rice and quinoa

It’s also important to drink lots of water. Aim for at least 8 cups (64 ounces) of water the day before your scan.

Foods and Beverages to Strictly Avoid

Some foods and drinks can mess up your PET scan results. You should avoid:

• Sugary foods and drinks, including candy, soda, and baked goods
• High-carb foods like bread, pasta, and sugary cereals
• Caffeine, as it can affect heart rate and blood flow
• Alcohol, as it can alter metabolism and affect scan results

A medical expert says, “Following dietary restrictions before a PET scan is key for clear images. Patients should stick to the guidelines given by their healthcare provider.”

“Dietary preparation is a critical component of a successful PET scan. By avoiding certain foods and focusing on a low-carb diet, patients can help ensure that their scan results are accurate and reliable.”

Sample Meal Plan for Pre-PET Scan Preparation

Here’s a sample meal plan to help guide your dietary preparation:

Meal	Recommended Foods	Foods to Avoid
Breakfast	Oatmeal with berries and almond milk	Sugary cereals, toast with jam
Lunch	Grilled chicken with roasted vegetables	Bread, pasta, sugary drinks
Dinner	Baked salmon with quinoa and steamed broccoli	High-carb sides, sugary desserts
Snacks	Raw veggies with hummus, nuts	Candy, chips, crackers

Following this meal plan can help ensure you’re ready for your PET scan.

The Day Before Your PET Scan: A Complete Checklist

To make sure your PET scan is a success, follow this checklist for the day before. Getting ready properly is essential. This guide will help you with the important steps.

Hydration Guidelines: When to Drink and When to Stop

Drinking water is key before a PET scan. You should drink lots of water the day before. But, your doctor might tell you when to stop drinking.

Usually, you need to stop drinking water and other fluids a few hours before the scan. This helps the radiotracer work better.

Hydration Timeline:

Time	Hydration Instruction
24 hours before scan	Drink plenty of water
2 hours before scan	Stop drinking fluids

Physical Activities to Avoid and Why

It’s best to avoid hard physical activities the day before your PET scan. This means no intense exercise, heavy lifting, or activities that stress your body a lot. These activities can change how the radiotracer spreads in your body.

This could make the scan less accurate.

“Resting and minimizing physical exertion helps ensure that the radiotracer is distributed consistently, leading to clearer images during the PET scan.”

Mental Preparation Strategies

Mental preparation is as important as physical. Try meditation, deep breathing, or listening to calm music to lower stress and anxiety. Thinking positively and remembering why the scan is important for your health can also help.

By following this checklist, you’ll be ready for your PET scan. This will make the experience smooth and successful.

What to Wear and Bring to Your PET Scan Appointment

To make your PET scan experience smooth and comfortable, knowing what to wear and bring is key. The right preparation can lower anxiety and make the procedure more efficient.

Clothing Recommendations for Maximum Comfort

Choosing the right clothes for your PET scan is vital for comfort and procedure success. Wear loose, comfortable clothing that allows easy movement. Avoid clothes with metal parts like zippers or jewelry, as they can affect the scan. Choose simple, metal-free attire for easy positioning on the scanner table.

Personal Items That Can Help You Stay Calm

Bringing certain items can help you relax during the PET scan. Bring a list of your medications and any important medical history. Some centers let you bring a friend or family member for support. You might also want to bring a book or a portable music player to pass the time.

Items That Must Be Left at Home or in Lockers

There are items you should not bring to your PET scan. Leave all jewelry and metal objects at home to prevent scan interference. Also, electronic devices like phones and watches must be left in a locker or outside the scanning room. Check with your imaging center for their policies on what’s allowed in the scanning room.

Arrival at the Imaging Center: The First Hour

When you arrive at the imaging center, you start a process to make sure you’re comfortable and safe. The first hour is key for getting ready and setting the mood for the scan.

Check-in Procedures and Paperwork

First, you’ll go to the check-in area. There, the staff will welcome you and help with the paperwork. This includes consent forms and health questionnaires. Try to arrive a bit early to finish these steps.

Required Documents:

• Insurance cards
• Identification
• Referral or prescription for the PET scan

The Uptake Room Experience

Next, you’ll head to the uptake room for the radiotracer injection. This room is made to be cozy and calming, helping to ease any nerves.

The uptake room is where the radiotracer is given, allowing it to build up in the body parts to be scanned.

Uptake Room Features	Description
Comfortable Seating	Designed to help you relax during the uptake period
Calming Environment	Soothing decor and ambiance to reduce anxiety
Monitoring Equipment	Allows staff to track your condition during the uptake period

The Radiotracer Injection Process

The radiotracer injection is a vital part of the PET scan. A tiny amount of radioactive material is injected into a vein, usually in your arm. This substance builds up in the body parts being examined, making detailed images possible.

The injection itself is quick and might feel like a pinch or sting. After, you’ll wait for about an hour for the radiotracer to spread throughout your body. Then, you’ll move on to the scan.

The PET Scan Procedure: A Detailed Walkthrough

Before your PET scan, it’s good to know what to expect. Knowing the steps can help you feel less anxious and make the process easier.

Entering the Scanning Room

When you get to the scanning room, a PET scan technologist will welcome you. They’ll explain the procedure and answer any questions. The room has a PET scanner, a big machine that looks like a giant doughnut or a short tunnel.

The technologist will make sure you’re comfortable and in the right spot on the scanner table.

Positioning on the Scanner Table

The scanner table moves slowly through the scanner. You’ll lie on it, usually on your back, and try to stay as quiet as possible. The technologist might use straps or supports to help you stay in place.

What Happens During the 20-40 Minute Scan

The PET scan takes between 20 to 40 minutes. During this time, the scanner table moves through the scanner, capturing images of the area being scanned. You might be asked to hold your breath or stay very quiet.

The technologist is in another room, watching the scan through a window and cameras.

Communication Methods With the Technologist

Throughout the scan, you can talk to the technologist through an intercom system. If you need to move or have any worries, just let them know. They can hear you and help, making sure you’re safe and comfortable.

Some important things to remember during the PET scan include:

• Stay as quiet as possible for clear images.
• Listen carefully to the technologist’s instructions.
• Use the intercom to talk about any concerns or needs.
• Remember, the scan is painless and safe.

By knowing what to expect during the PET scan, you can prepare better. This can help reduce your anxiety and make the experience smoother.

Physical Comfort Techniques During Your PET Scan

To have a good PET scan, focus on your comfort. This means breathing right, sitting well, and relaxing. Being comfortable helps you stay calm and follow directions.

Finding and Maintaining a Comfortable Position

Finding a comfy spot on the scanner table is key. The tech will guide you, but you can also bring items to help. A pillow or blanket can make a big difference. Always tell the tech if you’re not feeling right.

Tips for Comfortable Positioning:

• Use a small pillow to support your head or knees if needed.
• Keep your body as relaxed as possible, avoiding tension.
• If you have any chronic pain or discomfort, inform the technologist beforehand.

Controlled Breathing Techniques for Relaxation

Deep breathing can calm you down and make you more comfortable. It helps you relax and stay steady.

Try this technique: Breathe in slowly through your nose, hold it, then breathe out slowly through your mouth. Do this a few times.

Managing Temperature Discomfort in the Scanner

The room is usually at a good temperature, but some might feel too hot or cold. If you’re feeling off, ask to change the temperature or bring a blanket.

Dealing With the Need to Remain Stil

It’s important to stay very quiet during the scan. It can be hard, but there are ways to make it easier. Try relaxing exercises or imagining a peaceful place to help you stay calm.

Additional Tips for Remaining Stil:

1. Listen to calming music or nature sounds before the scan to help you relax.
2. Practice mindfulness techniques to improve your ability to remain sti.
3. If you need to adjust your position slightly, do so slowly and inform the technologist.

Using these comfort tips can make your PET scan better. It will be less stressful and more comfortable for you.

Mental Relaxation Strategies to Combat Scan Anxiety

Thinking about a PET scan can be very stressful. But, learning ways to relax your mind can help. Scan anxiety is common and can be managed with different techniques.

Visualization and Guided Imagery Exercises

Visualization is about making a mental picture of a calm place. It could be a beach, a forest, or any place that feels peaceful. Guided imagery goes further by adding sounds, smells, and feelings to this mental picture.

To practice visualization or guided imagery during a PET scan:

• Close your eyes and take slow, deep breaths.
• Imagine yourself in your chosen peaceful environment.
• Engage as many senses as possible in your imagery.
• Maintain this mental state throughout the scan.

Mindfulness and Meditation Techniques

Mindfulness is about being in the moment and noticing your thoughts and feelings. Meditation can help you stay calm and focused. Regular meditation can lower your anxiety and help you relax during stressful times like a PET scan.

Simple mindfulness exercises include:

• Focusing on the breath.
• Noticing the sensations in the body.
• Observing thoughts without engaging with them.

Technique	Description	Benefit
Visualization	Creating a mental image of a peaceful place	Reduces anxiety by distracting from the scan environment
Mindfulness Meditation	Focusing on the present moment without judgment	Decreases stress and improves ability to cope with the scan
Guided Imagery	Engaging multiple senses in a mental scenario	Enhances relaxation by fully immersing the individual in a calming environment

Distraction Methods That Work in the Scanner

Distraction can help manage scan anxiety. It means focusing on something else instead of the scan or the room.

Some distraction methods include:

• Listening to calming music or nature sounds.
• Engaging in mental activities like counting or simple math.
• Using visualization or guided imagery.

By using these mental relaxation strategies, people can lessen their scan anxiety. This makes the PET scan experience more bearable.

Medication Options for Managing Severe Scan Anxiety

Severe scan anxiety is a real concern that can be helped by different methods, including anti-anxiety medications. For some, the fear of a PET scan can be too much. They might need to talk to their doctor about medication.

When to Consider Anti-Anxiety Medications

Anti-anxiety meds are for when anxiety is so bad it stops you from getting a PET scan. A doctor will decide if you need them based on how bad your anxiety is.

Common Medications Used for Medical Imaging Procedures

There are several medicines for anxiety during PET scans. These include:

• Benzodiazepines: Like alprazolam (Xanax) and lorazepam (Ativan), they help with short-term anxiety.
• Selective Serotonin Reuptake Inhibitors (SSRIs): They’re usually for long-term anxiety, but might be used in some cases.

Talking to a doctor is key to finding the right medicine and dose for you.

Discussing Medication Options With Your Healthcare Provider

Before taking any anxiety meds for a PET scan, you must talk to your doctor. This conversation should cover:

1. Your medical history, including any past anxiety or medication use.
2. Any current meds or supplements to avoid bad interactions.
3. The best medicine and dose for you.
4. Any side effects and how to handle them.

Potential Effects on Driving and Post-Scan Activities

Some anxiety meds can make it hard to drive or do other activities safely. It’s important to know these effects before your scan:

Medication	Potential Effects	Precautions
Lorazepam (Ativan)	Drowsiness, dizziness	Avoid driving or operating heavy machinery
Alprazolam (Xanax)	Drowsiness, lightheadedness	Have someone accompany you home after the scan

Knowing about medication options and talking to your doctor can help you manage severe scan anxiety. This way, you can get through your PET scan more easily.

Special Considerations for Different Patient Groups

Different patient groups face unique challenges when preparing for and undergoing a PET scan. Factors such as age, medical history, and previous experiences can significantly impact how a patient copes with the scanning process.

Children and Teenagers Undergoing PET Scans

Children and teenagers need special care when they have a PET scan. Their smaller size and limited understanding of the process require adapted approaches. Medical staff use child-friendly language and explanations to help them feel more at ease.

In some cases, sedation may be considered for very young patients to minimize distress.

Elderly Patients and Mobility Concerns

Elderly patients may have additional needs due to mobility issues or comorbid conditions. It’s important to discuss any concerns with healthcare providers beforehand. This way, necessary accommodations, such as wheelchair accessibility or extra support during the scan, can be arranged.

Patients With Previous Trauma or Severe Medical Anxiety

For patients who have experienced previous trauma or suffer from severe medical anxiety, undergoing a PET scan can be challenging. These individuals may benefit from discussing their concerns with their healthcare provider. The provider can offer strategies or medications to help manage anxiety.

Cancer Patients Undergoing Repeated Scans

Cancer patients who undergo repeated PET scans may have unique concerns. They may worry about the results or the cumulative effect of radiation exposure. Healthcare providers can offer guidance on these matters. They can help patients understand the benefits and risks associated with repeated scans.

By understanding and addressing the specific needs of different patient groups, healthcare providers can help ensure a more comfortable and successful PET scan experience.

After the PET Scan: Recovery and Next Steps

The time after your PET scan is key. Knowing what to expect can greatly improve your recovery. It’s important to follow the steps right after the scan and in the days that follow. This ensures your safety and comfort.

Immediate Post-Scan Guidelines

After your PET scan, you’ll go to a recovery area. Here, medical staff will watch you for any immediate reactions. It’s vital to stay hydrated by drinking lots of water to remove the radiotracer from your body.

Most people can go back to their normal activities soon after the scan. But, it’s best to avoid strenuous activities for the rest of the day. Also, follow any specific care instructions from your healthcare team.

Radiation Safety and Precautions

Even though PET scan radiation is safe, there are precautions to take. Try to limit close contact with others, like pregnant women and children, for a few hours after the scan. Drinking lots of fluids also helps reduce radiation exposure by flushing out the radiotracer.

Returning to Normal Diet and Activities

Unless told not to, you can usually go back to your normal diet and activities after the scan. But, if you were on a special diet for the PET scan, check with your healthcare provider before going back to your usual eating habits.

It’s wise to listen to your body and rest if you’re feeling tired or uncomfortable. Most people can easily go back to their routine without problems.

When and How You’ll Receive Results

The time it takes to get your PET scan results can vary. Your healthcare provider will tell you when and how you’ll get them. It’s important to follow up with your healthcare team to understand your next steps.

“Receiving your PET scan results can be a significant moment in your diagnostic journey. Being prepared for what the results might indicate can help you navigate the next steps with confidence.”

Your healthcare provider will discuss the results with you. They’ll answer any questions you have and outline the next steps based on the findings.

Communicating Effectively With Your Healthcare Team

Talking well with your healthcare team is key for a good PET scan experience. It helps you understand what’s happening, answers your worries, and makes sure the scan goes smoothly.

Essential Questions to Ask Before Your Scan

Before your PET scan, ask your healthcare team important questions. This gets you ready for what’s coming. Some key questions are:

• What are the specific preparations required for the scan?
• Are there any dietary restrictions or recommendations?
• How long will the scan take, and what can I expect during the procedure?
• Are there any possible risks or side effects from the scan?

These questions can ease your anxiety and make sure you’re ready for the scan.

How to Express Anxiety Concerns to Medical Staff

If you’re worried about your PET scan, tell the medical staff. They know how to help and can make you feel better.

You can start by:

• Telling your healthcare provider about your anxiety during your first meeting.
• Talking about any past scary experiences or fears about medical tests.
• Asking about ways to handle anxiety during the scan.

Talking openly about your anxiety can make the experience less stressful.

Building a Supportive Relationship With Imaging Providers

Having a good relationship with your imaging providers makes your PET scan better. This means:

• Being open and honest about your health and worries.
• Following the advice and rules from your healthcare team.
• Keeping in touch to talk about any questions or problems.

Tips for Building a Supportive Relationship	Description
Be Open and Honest	Share your health history and worries with your healthcare team.
Follow Instructions	Stick to the advice given by your imaging providers.
Maintain Communication	Regularly talk to your healthcare team about any questions or issues.

Preparing for Future Imaging Procedures

After your PET scan, think about future imaging tests. This means:

• Keeping records of your past scans and results.
• Understanding why you might need more scans and what to expect.
• Keeping a good relationship with your healthcare team.

Being ready and talking openly can make future tests less scary.

Conclusion: Taking Control of Your PET Scan Experience

Getting ready for a PET scan can feel overwhelming. But, with the right information and attitude, you can manage it well. Knowing what to expect, following pre-scan advice, and using relaxation techniques can help you stay calm and make the process smoother.

It’s important to prepare well for a PET scan to get accurate results and feel less stressed. By following the advice in this article, like sticking to certain diets, managing your meds, and using relaxation methods, you can make your scan experience better.

Being informed and prepared is key to a successful PET scan. This way, you can lower your anxiety, have a good scan, and feel more confident about your health journey. With these tips, you’re ready to handle the scan and get the best results.

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