What to expect during a lung scan

If your doctor orders a lung scan, you may not know what to expect. The good news is that these tests are quick and painless. And, depending on the results, they could be lifesaving.

We offer lung cancer screenings in multiple convenient Aurora Health Care locations. Our team gets you answers quickly so you have peace of mind or can start on any needed treatment right away.

How do I prepare for a lung scan?

You typically don’t need to do anything special to prepare for a lung scan.

You will need to avoid wearing any metal, which could interfere with the test. You’ll be asked to remove any jewelry, hearing aids or glasses. If you’re wearing an underwire bra or pants with a metal closure, you may be asked to change into a hospital gown.

Be aware that you cannot have a lung scan if you develop a respiratory infection or have recently recovered from one. Respiratory infections can interfere with your test results.

What happens during a lung scan?

When it’s time for your lung scan, you go with a technologist into a room with the CT machine. Then:

1. You lie flat on your back on a long table.
2. Your technologist moves to another room. But they can still see you and speak to you to give instructions.
3. The table moves slowly into a large, donut-shaped machine.
4. The table moves through the machine. The machine takes pictures of your lungs from all angles, and you may hear whirring or clicking noises.

You’ll need to remain still during the test, and you may be asked to briefly hold your breath. Remaining still helps the technologist get a clear image of your lungs.

How long does a lung scan take?

Plan for your appointment to last around 30 minutes. The actual imaging process takes only a couple of minutes. You can resume all your usual activities as soon as your appointment is over.

Is a lung scan painful?

No, a lung scan isn’t painful. It’s completely noninvasive.

How will I receive my results?

You will receive a letter or phone call from your provider with the results as they become available. A radiologist, a doctor who specializes in diagnosing and treating conditions with medical imaging, interprets your scan and shares their findings with your doctor.

What do lung scan results mean?

After your lung scan, you may receive results that are:

• Negative: Negative results mean your scan didn’t show anything unexpected. Your doctor will recommend if and when you need another lung scan. Learn more about when to get a lung scan.
• Indeterminate: Indeterminate results mean your scan showed something unusual, but it doesn’t require immediate follow-up. Your doctor may recommend "watchful waiting" with a later test date to see if a nodule grows or changes.
• Positive: Positive results mean your scan showed something irregular, usually a nodule. A positive result doesn’t mean you have cancer. You’ll likely need more tests to figure out what the nodule is.

What happens if I need further screening?

If your lung scan is positive, your doctor may order more tests. You may have a:

• Biopsy: Your doctor removes a small piece of lung tissue to examine under a microscope.
• PET scan: You receive an injection of a harmless substance called a radiotracer. The radiotracer is a chemical compound that gathers in your lungs and gives off energy. A PET scanner detects that energy and creates detailed images of your lungs. A PET scan allows your doctor to view your lungs’ structure and function.

Learn more & schedule a lung cancer screening

Get started with a lung cancer screening by scheduling an appointment with your primary care provider. You’ll discuss risk factors and determine if a lung screening is right for you.

If you have questions about lung cancer screening, call us at 800-252-2990.