Search

Understanding the PET CT Scan Procedure

Medically reviewed by the Koshikaa Medical Team

Reviewed by Koshikaa’s qualified physicians and pathologists at our Koshikaa health screening centre in Bangalore.

Table of Contents

The PET CT scan procedure is one of the most advanced diagnostic tools available today, helping doctors detect diseases at an early stage. From cancer to neurological disorders, it combines accuracy with detail. 

Here, we will cover the meaning of a PET CT scan, how the procedure works, the cost involved, and a detailed step-by-step process that might surprise you.

PET CT scan

A PET CT scan stands for Positron Emission Tomography – Computed Tomography. It combines two powerful technologies in one test.

  • A PET scan shows how your cells are functioning, highlighting abnormal activity.
  • A CT scan captures detailed images of the anatomy, including bones, tissues, and organs.

This dual approach enables doctors to view both structure and function simultaneously, providing a comprehensive picture.

It is widely used in detecting cancer, heart disease, neurological conditions, and infections. For patients who require a more extensive check-up, a PET CT scan of the whole body can reveal hidden issues that might otherwise go unnoticed.

PET CT Scan Procedure Explained 

PET CT scan in Bangalore

The PET CT scan procedure usually follows four main steps:

Step 1: Preparation

Patients are advised to fast for 4–6 hours, avoid strenuous exercise, and remove any metal objects, such as jewellery. Comfortable clothing is recommended.

Step 2: Injection of Radioactive Tracer

A small dose of a tracer, usually FDG (a type of glucose), is injected into a vein. This tracer highlights active cells, especially cancer cells, since they consume more glucose. After the injection, patients wait 30–60 minutes for the tracer to circulate.

Step 3: The Scan

You will lie on a cushioned table that slides into the PET CT machine. The scanner then takes detailed PET CT scan images, combining both cell activity and anatomical structure. The process is painless and usually takes 20–30 minutes.

Step 4: After the Test

Once done, patients can drink water to flush out the tracer and return to their daily routine. Doctors analyze the PET CT scan report to guide treatment or further tests.

Difference between PET CT Scan Test, MRI, and CT Scans

FeatureMRICT ScanPET CT Scan Test
FocusSoft tissuesCross-sectional anatomy (bones, organs, tissues)Both structure and function
What it ShowsDetailed images of soft tissues like the brain, muscles, and ligamentsDetailed structural anatomyCell activity and anatomical detail together
Best UseBrain, spine, joints, soft tissue injuriesTrauma, fractures, chest, and abdominal imagingCancer staging, treatment planning, therapy monitoring
Unique AdvantageExcellent for soft tissue clarityQuick and widely availableDetects disease at a cellular level while showing the body structure

PET CT Scan Cost in India 

The PET CT scan cost in India varies based on factors such as hospital type, city, and whether it’s for a specific body part or a whole-body scan. 

Patients looking for a PET CT scan in Bangalore have access to advanced technology, offering high accuracy and faster results at trusted diagnostic centres.

Choosing the Best PET CT Scan Centre in Bangalore 

Selecting the right centre ensures accurate results. The best PET CT scan centres in Bangalore use updated machines, follow strict safety standards, and employ skilled radiologists who can interpret complex reports with precision.

It is also essential to choose a health screening centre in Bangalore that offers comprehensive care, quick appointments, and reliable reporting. 

At Koshikaa, patients receive trusted diagnostic services with a focus on accuracy and patient comfort, making it a preferred choice for many.

Final Thoughts 

The PET CT scan procedure is safe, effective, and one of the best tools for early detection of diseases. It not only helps doctors diagnose conditions but also tracks treatment progress with precision.

If you are looking for a PET CT scan in Bangalore, consulting a trusted health screening centre in Bangalore like Koshikaa ensures timely and accurate results for better care and peace of mind.

FAQs on PET CT Scan 

1. Is a PET-CT scan just for cancer?
No. While it is widely used in cancer detection and staging, PET CT scans also help diagnose heart problems, infections, and neurological disorders.

2. How do you prepare for a PET-CT scan?
You should fast for 4–6 hours, avoid physical activity, and wear loose-fitting clothes. Always inform your doctor if you have diabetes or are pregnant.

3. What is a PET CT scan of the whole body?
This scan evaluates the entire body in one test, useful for checking if cancer has spread or for identifying hidden conditions.

4. Are there any side effects of a PET CT scan?
Side effects are rare. The radioactive tracer is safe and usually leaves the body within 24 hours. Drinking water helps flush it out.

5. How soon will I get my PET CT scan report?
Reports are usually available within 24–48 hours, depending on the centre’s workload and the complexity of findings.

Written by the Koshikaa Editorial Team

Koshikaa publishes preventive health and diagnostics content for readers in Bangalore. All medical content is reviewed by our qualified medical team before publication.

Medically reviewed by the Koshikaa Medical Team.

The information in this article is for general educational and awareness purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider regarding any health concern or before making decisions about your care.

CT scans of the spine are conducted to assess the vertebrae, spinal cord, and surrounding soft tissues for conditions like herniated discs, spinal fractures, or spinal stenosis, aiding in the diagnosis and management of spinal disorders with detailed imaging essential for surgical planning and intervention.
CT scans of the pelvis are utilized to visualize the pelvic bones, reproductive organs, bladder, and surrounding structures for conditions such as fractures, tumors, or pelvic inflammatory disease, guiding treatment plans and surgical interventions with precise anatomical information.
CT scans of the neck are performed to evaluate structures such as the throat, thyroid gland, lymph nodes, and blood vessels for abnormalities like tumors, infections, or injuries, assisting in diagnosis and management of head and neck disorders with detailed imaging.
CT scans of the extremities are employed to assess bones, joints, and soft tissues in the arms or legs, aiding in the diagnosis of fractures, arthritis, or other musculoskeletal conditions, guiding orthopedic treatment and rehabilitation plans for optimal recovery.
CT scans of the chest are utilized to examine the lungs, heart, blood vessels, and surrounding structures for conditions such as lung nodules, pneumonia, or pulmonary embolism, facilitating accurate diagnosis and management of respiratory and cardiovascular diseases.
CT scans of the brain are conducted to assess brain structures, identify abnormalities like tumors, hemorrhages, or strokes, and aid in diagnosing neurological conditions, guiding neurosurgical interventions and treatment strategies with precise imaging of the brain’s anatomy.
CT scans of the abdomen are performed to visualize and evaluate the internal organs such as the liver, kidneys, pancreas, and intestines for conditions like tumors, infections, or injuries, providing detailed images essential for diagnosis and treatment planning.
Transplant organ ultrasound scans, including those of the liver, kidney, or pancreas, are performed to assess organ viability, detect complications, and monitor post-transplant function. These scans play a vital role in the early detection of issues such as organ rejection, vascular complications, or fluid collections, guiding timely interventions and optimizing transplant outcomes for patients.
Ultrasound examinations of organs such as the liver, kidney, or prostate are crucial for assessing organ structure, detecting abnormalities, and monitoring disease progression. These scans help diagnose conditions such as liver cirrhosis, kidney stones, or prostate enlargement, guiding treatment decisions and monitoring response to therapy over time.
Ultrasound scans are valuable for detecting cysts or fluid collections within the body, including cysts in the liver, kidneys, or other organs. These scans help characterize the nature and size of cysts, aiding in diagnosis and treatment planning for conditions such as cystic liver disease or renal cysts, and guiding interventions such as cyst drainage or sclerotherapy.

Frequently Booked Tests

Frequently Booked Checkups