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A Positron Emission Tomography (PET) scan is a cutting-edge imaging technique used to detect diseases at a cellular level. This non-invasive diagnostic tool is especially valuable in cancer detection, heart disease evaluation, and neurological disorder diagnosis.
During a PET scan, a small amount of a radioactive tracer is injected into the body. This tracer is absorbed by tissues and organs, highlighting areas of abnormal metabolic activity. The PET scanner captures high-resolution, 3D images, allowing doctors to assess how well organs and tissues are functioning.
Key Benefits of PET Scans
Early Disease Detection
PET scans can identify disease before structural changes occur.
Cancer Diagnosis and Monitoring
Helps detect tumors and track treatment effectiveness.
Identify brain tumors and epilepsy
Useful in diagnosing coronary artery disease, Alzheimer’s disease, epilepsy, and other conditions.
Uses of PET Scans
- Detecting and staging cancer
- Evaluating brain disorders such as dementia or seizures
- Monitoring the effectiveness of ongoing treatments
- Assessing heart function and blood flow
How to Prepare for a PET Scan?
- Fasting Required – Avoid food for 4-6 hours before the scan
- Stay Hydrated – Drink plenty of water before the test
- Avoid Caffeine & Alcohol – Can interfere with results
- Inform About Medications – Some may need adjustment before the scan
- Wear Loose, Comfortable Clothing – Remove metal objects, jewelry, and accessories
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What Happens During a PET Scan?
Total Duration: 1.5 to 2 hours
- A small dose of radioactive tracer is injected into the vein
- It takes 30-60 minutes for the tracer to spread in the body
- The patient lies on a motorized bed inside the PET scanner
- The machine captures detailed 3D images of organs and tissues
- The scan takes 30-45 minutes
- Afterward, patients can resume normal activities
FAQ
No, the test is non-invasive and painless. You may feel a small prick during the injection.
Results are usually available within 24 to 48 hours.
Yes, the tracer is low-dose and harmless, leaving the body within a few hours.
No, fasting is required for at least 4-6 hours before the scan.
People with suspected cancer, neurological conditions, or heart diseases may require a PET scan for diagnosis and treatment planning.
Find the Best PET Scan Centre Near You
 Looking for a PET scan  We help you find certified diagnostic centres offering:
- State-of-the-art PET-CT & PET-MRI Scanners
- Affordable & Transparent Pricing
- Expert Radiologists & Oncologists
Need a quick appointment? Visit Best PET Scan Centres for easy booking.
Book your PET Scan today!
Consult a Specialist Before Your PET Scan
If you have a medical condition or are undergoing treatment, consult a doctor before scheduling your test.
Book a Doctor Consultation Here:Consult a Specialist
Other Imaging Scans Available
MRI Scan
Advanced imaging for brain, spine, and joints
Ultasound Scan
Detailed assessment
SPECT Scan
Detailed Blood flow assesment
CT Scan
High-resolution cross-sectional imaging
