Discover the precision of PET cardiology: a swift, high-definition look at your heart’s health using the latest in advanced imaging technology.

PET Scan

Pet Scan Services in Georgetown, Texas

What is a PET scan?
PET, or positron emission tomography, uses higher energy isotopes to achieve a better image of the heart than the standard nuclear camera. Although PET scanners have been used for brain studies and oncology, they’ve fairly new to cardiology.

What is involved in the test?
This test takes about an hour. Upon arrival, you will change into a gown, a blood pressure cuff will be placed around your arm, and EKG leads will be applied to your chest. A technician will also prepare you for an IV. You will lie down on a table and have a series of camera images taken while you remain as still as possible.

Why do I need an IV?
During the stress procedure of the test, you will be given a medication that simulates the effects of exercise. We use two types of medication: Adenosine and Dipyridamole. These medications can make people experience such symptoms as:

Shortness of breath
Tightness in the chest
Flushing of the face
Nausea
Heart rate elevation

This test requires a referral from your cardiologist or primary care physician. If the test is normal, you will have the results within five working days. If the test reveals a problem, you will be notified immediately.

Understanding the Role of Medications During the Scan
In many cases, a stress component is included in pet scan services in Georgetown, Texas to evaluate how your heart performs under exertion. Since physical exercise may not be practical during the scan, medications are used to simulate the effects of exercise on your heart.

Commonly used medications include Adenosine and Dipyridamole. These drugs temporarily increase blood flow in a way that mimics physical activity, helping doctors identify areas where blood flow may be restricted.

As these medications take effect, some patients may experience temporary sensations such as shortness of breath, chest tightness, facial flushing, mild nausea, or an increased heart rate. These effects are typically short-lived and closely monitored by medical professionals throughout the procedure to ensure your safety and comfort.

Benefits of PET Scan Imaging for Heart Evaluation

A PET scan offers several advantages that make it one of the most advanced tools in cardiac imaging. One of its key benefits is its ability to provide both functional and metabolic information about the heart. This means doctors can see not only how the heart looks but also how well it is working.

Another major advantage is its high level of accuracy. PET scans can detect even subtle changes in blood flow, making them particularly useful for early diagnosis of coronary artery disease. Early detection allows for timely intervention, which can significantly reduce the risk of serious complications such as heart attacks.

Additionally, PET imaging can help determine whether damaged areas of the heart muscle are still viable and capable of recovery. This information is crucial when deciding on treatments like angioplasty or bypass surgery.

Frequently Asked Questions

How do I prepare for a heart PET scan?

Preparation is very similar to other nuclear tests. You will likely be asked to fast (no food) for several hours before the appointment. Most importantly, you must avoid all caffeine—including decaf coffee, soda, and chocolate—for at least 24 hours, as caffeine can block the effects of the stress medication.

Is a PET scan better than a regular nuclear stress test?

While both are excellent tools, a PET scan generally offers higher resolution and better “image contrast.” This is particularly helpful for patients with a larger body habitus or those who have had inconclusive results from other types of imaging. It also exposes the patient to slightly less radiation because the isotopes used have a shorter half-life.

Will the PET scan show if I’ve had a heart attack?

Yes. A PET scan is exceptionally good at identifying “myocardial viability.” This means it can distinguish between heart tissue that is permanently scarred from a previous attack and tissue that is simply “hibernating” due to low blood flow but could still recover with the right treatment.

Is the radioactive tracer used in a PET scan dangerous?

The tracer used in a PET scan is considered very safe. It uses a small amount of radiation that decays very quickly. In fact, most of the radioactivity is gone from your body by the time you leave the clinic, and drinking water afterward helps flush out any remaining traces.

How long do I have to be inside the PET scanner?

The actual time spent inside the scanner is usually between 20 and 40 minutes. Unlike some older MRI machines, the PET scanner is a large ring (like a giant donut) rather than a long, dark tunnel, which most patients find much more comfortable and less claustrophobic.

Do I need a referral for a cardiac PET scan?

Yes. Because this is a highly specialized diagnostic test, you will need a formal referral from either your cardiologist or your primary care physician. This ensures that the test is medically necessary and that your insurance provider is likely to cover the procedure.

When will my doctor explain the PET scan results to me?

If your test results are normal, you will typically be notified within five working days. However, if the images reveal a significant blockage or an urgent issue, the specialized cardiologist who reads the scan will notify your care team immediately so you can be contacted right away.

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