What is a PET-CT Scan?

PET-CT Scan refers to Positron Emission Tomography - Computed Tomography Scan detects the starting signs of heart disease, brain disorder, and cancer. A small amount of injectable radioactive materials called radiotracers or radiopharmaceuticals detect diseased cells.

To check the symptoms of various diseases such as cancer, including breast cancer, lung cancer, thyroid cancer, coronary artery disease, heart attack, and other heart problems this PET-CT scan is used. Even brain disorders like brain tumours, epilepsy, dementia, and Alzheimer's disorder will be detected through this test.

PET-CT Scan Cost in India

Test Type Imaging Test
Preparation Before the scan - stop exercising for 24 hours, follow a special diet for 12 to 24 hours, and never drink or eat anything except water for 6 hours prior to the scan. Seek specific instruction from the consulting doctor.
Report Within 24 to 48 hours.
PET-CT scan cost Rs. 10000 to Rs 35000 approximately.

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Why do I need a PET-CT scan?

PET-CT scans are commonly used for various types of cancer. They are generally considered more accurate in diagnosing cancer compared to PET or CT scans alone. PET-CT scans have several benefits, including:

  • Helping to diagnose cancer.
  • Determining the size of the cancer and whether it has spread (staging).
  • Assisting in the decision-making process for surgery to remove the cancer.
  • Guiding the selection of the most suitable treatment for cancer.
  • Monitoring whether the cancer has returned.
  • Planning radiotherapy treatment.
  • Assessing the effectiveness of cancer treatment.

Following cancer treatment, a scan may reveal an area that appears to still contain cancer cells. However, this could be scar tissue remaining from the cancer that was eliminated by the treatment.


PET-CT Scan Types

PET-CT scans are tailored to specific needs and may vary based on the condition being evaluated. Some common types include:

  • Whole-body PET-CT for cancer detection.
  • Cardiac PET-CT for heart function analysis.
  • Brain PET-CT for detecting neurological disorders.

PET-CT Scan Uses

A PET-CT scan is commonly used to check for:

  • Various cancers, such as breast, lung, and thyroid cancer.
  • Heart diseases, including coronary heart attacks.
  • Brain disorders, such as brain tumors, dementia, and Alzheimer's disease.

It is particularly helpful in diagnosing, staging, and monitoring treatment for cancer.


Preparing for your PET-CT scan

  • Fasting Reminder : PET-CT scans usually require fasting for 4 to 6 hours beforehand, but you can still drink water.
  • Special Circumstances : Those with conditions like diabetes may struggle with fasting. If this applies to you, reach out to the number on your appointment letter to discuss any necessary adjustments.
  • Claustrophobia Concerns : Feeling claustrophobic during the scan? Let the staff know beforehand so they can help make you more comfortable.
  • Relaxation Medication : Your doctor can provide medication to help you relax during the scan, making the process easier for you.

PET-CT Scan Procedure

Before the Scan:

  • Avoid eating or drinking anything except water for 6 hours before the scan.
  • Consult your doctor for specific instructions, especially if you have diabetes or other medical conditions.

During the Scan:

  • A radiotracer is injected into your vein.
  • You’ll rest for about an hour to allow the tracer to circulate.
  • Then, you lie on a scanning table while the machine captures detailed images.

After the Scan:

  • You can usually resume normal activities immediately.
  • Drink plenty of water to flush out the radiotracer from your body.

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Risks of a PET-CT Scan

A PET-CT scan is generally safe, but there are pet ct scan side effects has some potential risks:

  • Pregnancy: Inform your doctor if you're pregnant, as radiation may harm the baby. The scan is usually only recommended in emergencies.
  • Breastfeeding: Let the department know if you're breastfeeding. You may need to temporarily stop and store milk after receiving the radioactive tracer.
  • Radiation: Exposure to radiation is minimal but can slightly increase cancer risk.
  • Bruising/Swelling: Minor bruising or swelling may occur at the injection site. Rarely, the tracer may leak, causing discomfort.
  • Allergic Reaction: Very rare, but reactions to the tracer may cause symptoms like weakness or difficulty breathing. Notify the radiographer if this occurs.

Overall, risks are low, and your medical team will ensure your safety.

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Frequently Asked Questions

Does a PET-CT scan show all cancers?

It might not show all types of cancers. This PET-CT scan can show only solid tumours in the brain, prostate, thyroid, lungs, and cervix cancers. They might be read along with other test findings to confirm a cancer.

Can inflammation show on a PET-CT scan?

PET-CT scan highlights the high metabolic activity inside the body that need not be cancer. That can be an area of inflammation, infection, trauma, or surgery recently done.

What are the side effects of having a PET-CT scan?

The doctor will use iodized contrast dye, which causes side effects such as nausea, vomiting, headache, itching, flushing, and mild rash. In some rare cases, a serious all-body allergic reaction called anaphylaxis may occur.

When is a PET-CT scan recommended?

You were recommended for this scan if you are suspected to have cancer-based on your symptoms, physical exam, or other tests. It is also recommended to see the effectiveness of recent cancer treatment.

What food to avoid after a PET-CT scan?

Certain foods to avoid after a PET-CT scan is

  • Cereals
  • Pasta
  • Dry beans
  • Fruit juices
  • Sugar, honey, desserts or candy
  • Starchy vegetables

How long does a PET-CT scan take?

It takes approximately 30 minutes.

Do you feel sick after a PET-CT scan?

No, there will be no sickness after the PET-CT scan. You can do your routine work as usual.

How much water should you drink after the scan?

You need to drink 5 glasses of water. Feeding mothers need to wait for 24 hours to resume breastfeeding.

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