Bangalore has become one of the leading cities in India for advanced nuclear medicine imaging. Patients across Karnataka and South India travel here specifically for PET CT scans that are not available at most diagnostic centres. This guide covers every type of PET CT scan available in Bangalore (Bengaluru), what each one detects, and which scan your oncologist might recommend based on your condition.
What Is a PET CT Scan?
A PET CT scan combines two imaging technologies into one examination. The PET (Positron Emission Tomography) component uses a small amount of radioactive tracer injected into your bloodstream. Cancer cells absorb this tracer at higher rates than normal tissue. The CT (Computed Tomography) component provides detailed anatomical images. Together, they show both where abnormal activity is happening and its exact location in your body.
Different tracers target different biological processes. This is what makes the various types of PET CT scans distinct from each other.
FDG PET CT Scan
FDG (fluorodeoxyglucose) is the most widely used tracer in PET CT imaging worldwide. It works by mimicking glucose. Cancer cells consume glucose at much higher rates than normal cells, so FDG accumulates in tumours and lights up on the scan.
When FDG PET CT is recommended
- Initial cancer diagnosis and staging
- Lymphoma, lung cancer, breast cancer, colorectal cancer, head and neck cancers
- Monitoring treatment response during chemotherapy or radiation
- Detecting cancer recurrence after treatment
- Evaluating solitary pulmonary nodules
- Certain infections and inflammatory conditions
FDG PET CT is available at multiple centres in Bangalore. Dr. Prathap H.J., a nuclear medicine specialist practising in Bangalore, performs FDG PET CT scans regularly for patients referred by oncologists across the city.
Read more about FDG PET CT scans
FAPI PET CT Scan
FAPI (Fibroblast Activation Protein Inhibitor) PET CT is one of the newer tracers gaining traction in Bangalore. Unlike FDG, which targets glucose metabolism, FAPI targets a protein called FAP that is overexpressed in the connective tissue (stroma) surrounding many cancers.
Advantages of FAPI over FDG
- No fasting required before the scan
- Safe for diabetic patients without blood sugar concerns
- Better imaging of brain tumours (FDG has high normal brain uptake)
- Better liver tumour detection (lower background liver activity)
- Clearer images in areas where inflammation mimics cancer on FDG
- Scan can be done within 10 minutes after injection
Cancers where FAPI PET CT is useful
Pancreatic cancer, cholangiocarcinoma (bile duct cancer), gastric cancer, peritoneal carcinomatosis, sarcomas, certain breast cancers, and brain tumours. FAPI PET CT scan in Bangalore is available at select nuclear medicine centres.
Learn more about FAPI PET CT in Bangalore
PSMA PET CT Scan
PSMA (Prostate Specific Membrane Antigen) PET CT has transformed how prostate cancer is detected and staged. PSMA is a protein found on the surface of prostate cancer cells, and this scan targets it directly.
When PSMA PET CT is used
- Initial staging of high-risk prostate cancer before surgery or radiation
- Detecting recurrence when PSA levels rise after treatment
- Identifying metastatic sites for targeted therapy planning
- Selecting patients for Lu-177 PSMA radioligand therapy
PSMA PET CT is significantly more sensitive than conventional bone scans and CT scans for detecting prostate cancer spread. In Bangalore, Dr. Prathap H.J. uses PSMA PET CT as part of the theranostics pathway for prostate cancer patients.
Read about PSMA PET CT in Bangalore
Ga-68 DOTANOC PET CT Scan
This scan targets somatostatin receptors, which are present on neuroendocrine tumour (NET) cells. Ga-68 DOTANOC binds to these receptors, making even small NETs visible on imaging.
Conditions detected
- Neuroendocrine tumours of the pancreas, gut, and lungs
- Carcinoid tumours
- Pheochromocytoma and paraganglioma
- Medullary thyroid carcinoma
- Meningiomas
Ga-68 DOTANOC PET CT also plays a critical role in determining whether a patient is eligible for Lu-177 DOTATATE peptide receptor radionuclide therapy (PRRT).
More about DOTANOC PET CT in Bangalore
CXCR4 PET CT Scan
CXCR4 PET CT targets the chemokine receptor CXCR4, which is overexpressed in several blood cancers. This is a specialised scan not available at most centres.
Primary applications
- Multiple myeloma
- Certain lymphomas
- Chronic lymphocytic leukaemia
- Adrenocortical carcinoma
Learn about CXCR4 PET CT in Bangalore
Exendin PET Scan
Exendin PET targets GLP-1 receptors and is specifically designed to locate insulinomas. These are rare pancreatic tumours that produce excess insulin. They are often tiny (under 1 cm) and nearly impossible to find with conventional imaging.
Read about Exendin PET scans in Bangalore
CAIX PET CT Scan
CAIX (Carbonic Anhydrase IX) PET CT targets a protein overexpressed in clear cell renal cell carcinoma. This scan helps identify kidney cancer lesions and plan targeted radioligand therapy.
More about CAIX PET CT in Bangalore
GPC3 PET CT Scan
GPC3 (Glypican-3) PET CT targets a protein found on hepatocellular carcinoma (liver cancer) cells. This is among the newest PET CT tracers available in Bangalore for liver cancer patients.
Learn about GPC3 PET CT in Bangalore
Trivehexin PET CT Scan
Trivehexin is a newer integrin-targeting PET tracer that can visualise tumour angiogenesis (new blood vessel formation). It provides information about tumour biology that other tracers cannot.
Read about Trivehexin PET CT in Bangalore
How to Choose the Right PET CT Scan
The choice of tracer depends entirely on your clinical situation. Your oncologist or treating physician will recommend the appropriate scan based on:
- The type of cancer suspected or confirmed
- Whether this is initial staging or follow-up
- Previous imaging results
- Whether radioligand therapy is being considered
In some cases, your doctor may recommend two different PET CT scans. For example, a patient with prostate cancer might get both a PSMA PET CT for disease mapping and an FDG PET CT to assess aggressive components.
PET CT Scan in Bangalore: What Sets This City Apart
Bangalore (Bengaluru) offers more types of PET CT scans than most Indian cities. While FDG and PSMA are available in many tier-1 cities, tracers like FAPI, CXCR4, Exendin, CAIX, GPC3, and Trivehexin are available only at select centres. Dr. Prathap H.J. practises nuclear medicine in Bangalore and offers a comprehensive range of PET CT scans and radioligand therapies.
Patients from across Karnataka, Tamil Nadu, Kerala, Andhra Pradesh, and Telangana travel to Bangalore specifically for these advanced imaging options.
Frequently Asked Questions
How many types of PET CT scans are available in Bangalore?
Bangalore offers at least 9 different types of PET CT scans including FDG, FAPI, PSMA, Ga-68 DOTANOC, CXCR4, Exendin, CAIX, GPC3, and Trivehexin. This makes it one of the most comprehensive nuclear medicine destinations in India.
Which PET CT scan is best for cancer detection?
FDG PET CT is the most widely used and detects most solid organ cancers. However, specific cancers respond better to specific tracers. PSMA is superior for prostate cancer, FAPI for pancreatic and brain tumours, and DOTANOC for neuroendocrine tumours.
Do I need to fast before all PET CT scans?
Fasting for 4 to 6 hours is required for FDG PET CT scans because glucose levels affect the results. FAPI, PSMA, DOTANOC, and most other PET CT scans do not require fasting.
Can I get a PET CT scan in Bengaluru without a referral?
While some centres accept walk-in patients, it is best to have a referral from your treating oncologist. The referral helps the nuclear medicine physician choose the correct tracer and protocol for your condition.
Where can I get a FAPI PET CT scan near me in Bangalore?
FAPI PET CT scans are available at select nuclear medicine centres in Bangalore. Dr. Prathap H.J. offers FAPI PET CT scanning in central Bangalore. Call +91 80505 97975 to enquire about availability.
To book any PET CT scan in Bangalore, contact Dr. Prathap H.J. at +91 80505 97975.