What to Expect During Your Cardiac PET/CT Scan in San Diego, CA

If your doctor has recommended a Cardiac PET/CT scan, you’re likely wondering what the process involves—and if there’s anything you should be concerned about. At Modern Nuclear, we believe that the best healthcare is built on trust, transparency, and patient education. So let’s walk through exactly what to expect, how to prepare, and why you’re in good hands when you visit our San Diego facility.

First Things First — Why You Might Need a Cardiac PET/CT Scan

Before diving into logistics, let’s talk about the “why.” A Cardiac PET/CT scan is a highly advanced imaging test to check how well blood flows through your heart. It’s beneficial in diagnosing coronary artery disease (CAD), sometimes before symptoms even appear.

Unlike traditional stress tests or basic CT scans, this one combines:

PET (Positron Emission Tomography) to assess blood flow
CT (Computed Tomography) to give a detailed picture of your heart’s structure.

Modern Nuclear uses a Rubidium-82 tracer, which is fast, effective, and safe—with very low radiation exposure.

How to Prepare for Your PET/CT Scan (Don’t Worry—It’s Simple)

Medical appointments can be overwhelming, so here’s a quick guide to make your day smoother.

The Day Before Your Scan

Avoid caffeine for at least 24 hours. That means coffee, tea, soda, even decaf!
Eat a light meal the night before. Try to avoid heavy or fatty foods.
Please inform us about medications. Some may interfere with the scan, especially those that affect your heart rate.

On the Day of Your Appointment

Fasting is essential: Avoid food or drink (besides water) for about four hours before your scan.
Dress comfortably. Wear loose-fitting clothes, and avoid metal like zippers or jewelry.
Bring a list of your medications and any recent test results if you have them. Our staff will walk you through anything unclear beforehand—no surprises.

What Happens During the Cardiac PET/CT Scan?

Let’s break it down step-by-step so you’re not left guessing.

Step 1 – Check-In and Review

You’ll arrive at your routine San Diego clinic, where you will likely see us parked outside. Before entering the trailer, be sure to check in with the clinic, where a friendly team will review your health history and confirm any last-minute details. Please be sure to use the restroom before onboarding, as there is no restroom present on the trailer. We keep wait times minimal because we respect your time.

Step 2 – IV Placement and Resting Scan

Once you are on the trailer and checked in, a team member will help you move onto the scanner bed where a small IV will be placed in your arm to inject the Rubidium-82 tracer. Don’t worry—you’ll barely feel it. The tracer helps highlight blood flow to the heart on the scan.

You’ll lie on the scanner bed while the camera takes images of your heart at rest. It’s non-invasive and pain-free.

Step 3 – Stress Simulation

Instead of a treadmill, we use medication that simulates exercise by increasing blood flow. This is safer and more accurate for many patients. You might feel slightly warm or notice your heart beating faster for a few minutes—that’s normal. Please be sure to let the staff know of any symptoms after the medication is injected.

Then, we take another round of scans to compare your heart’s performance under stress.

Step 4 – All Done!

The scan takes about 30 to 45 minutes, and you can return to normal activities shortly after. We will upload the images for interpretation right away, and the interpreting physician should have the results back within 24 to 48 hours. Be sure to schedule a follow-up with your doctor to review the results.

Is the Scan Safe? What About Radiation?

That’s a common question—and a great one.

We use Rubidium-82, which has a short half-life (just over 1 minute), meaning it leaves your body quickly. This keeps radiation exposure extremely low, making the scan safe for most patients, including those with existing conditions.

At Modern Nuclear, we’re fully accredited and follow strict protocols to ensure your safety.

Why Patients in San Diego Trust Modern Nuclear

We know trust isn’t given—it’s earned. That’s why we:

Explain everything clearly, without medical jargon.
Respect your time and comfort.
Use only the latest cardiac PET/CT technology.
Offer a calm, professional environment with a personal touch.

Whether you’re referred for early detection or ongoing heart care, we’re your advocate—not just your imaging provider.

Final Thoughts — You’re Not Alone in This

It’s completely normal to feel nervous before a medical test. But when you know what to expect, and when you have a team that treats you like a human—not just a patient number—that anxiety fades.

At Modern Nuclear in San Diego, we aim to provide clarity, comfort, and cutting-edge cardiac imaging that helps you and your doctor make informed, confident decisions.

FAQs About Cardiac PET/CT Scans in San Diego

1. Is a PET/CT scan painful?
Not at all. It’s non-invasive, and most patients feel completely comfortable throughout the process.

2. How soon will I get my results?
We send your scan images to be interpreted normally within the same day. The final results are generally returned within 24-48 hours.

3. Will my insurance cover this?
Many plans, including Medicare, cover PET/CT scans. We’ll help verify your coverage and assist with any pre-approvals if needed.

4. Can I drive after the scan?
Yes! No sedation is involved so you can drive yourself to and from the appointment.

5. What makes Modern Nuclear different from a hospital scan center?
We specialize in cardiac imaging and prioritize short wait times, personalized care, and the most advanced PET/CT technology available in San Diego. Since Modern Nuclear is local, you will not need to worry about long delays, time-zone conflicts, or oversights.