PET-CT Scan in India: Cost, Procedure, Uses & What Patients Should Know

PET-CT scan is an extremely detailed imaging test that takes place using both Positron Emission Tomography (PET) and Computed Tomography (CT) scans. CT shows detail and location of organs and tissues while PET indicates changes in metabolic activity within the body. They provide doctors with a clearer picture of what goes on inside the body. PET-CT is frequently used for cancer treatment. It is used to diagnose some cancers, find out if cancer has spread, assess how well treatment has worked, and monitor for recurrence of cancer following treatment. But PET-CT is also employed for specific heart, brain, and other health problems.

What Is a PET-CT Scan?

The PET-CT (also known as a PET scan) is a combined PET and CT scan conducted in the same scan session. A small dose of a radioisotope, or “radiotracer,” is administered, typically through intravenous injection, prior to the scan. FDG, a compound that mimics glucose, is the most popular tracer for PET scans used in many cancer cases. However, certain cancer cells consume more glucose than their normal counterparts, and as a result, they absorb more FDG and have a different appearance on the images produced by PET. The CT component is used to form images of the anatomy, and the PET component is used to get information about activity present in tissues. By combining these images, the doctor can better sense and grasp abnormal regions.

Why Is PET-CT Used?

There are various indications for the use of PET-CT depending on the patient's disease and the type of tracer which is included. The importance of its use is listed as cancer evaluation. A PET-CT might help doctors locate an active tumor, determine if cancer has spread to other areas of the body, see how treatment is working, or search for cancer returning. It is also used for some neurological diseases and cardiovascular diseases as well.

PET-CT for Cancer

PET-CT is routinely used in the diagnosis and staging stages, when making a treatment plan, and for subsequent follow-up of cancer. PET-CT is used to detect regions of higher or lower glucose or targeted tracer uptake than other regions in the body in some cancers. This assists a doctor in determining whether the disease is active or not, and if it has spread from the primary site.

PET-CT is also useful while treating cancer. Alterations in the patient's metabolism enable doctors to gauge if the tumour is treating with the drug. Sometimes the scan is also used to see if there is a repeat disease following treatment. But PET-CT cannot be used for all kinds of cancer and all patients. Various cancers have different scanners and imaging techniques, so the test is carried out as recommended by the treating physician.

What Is a Whole Body PET-CT Scan?

In a whole-body PET-CT scan, a large area of the body is mapped within a single test. It is used frequently in oncology, where clinicians want to detect activity of cancer somewhere other than where they initially found it. The amount of area to be scanned depends on the clinical indication and scan protocol. A whole-body PET-CT scan helps a doctor identify potential areas of spread of cancer as well as the general distribution of the disease (active cancer). While a whole-body PET-CT is used for routine health screening for all, it's not the same as a regular test done for this purpose. A doctor should determine the need for this exam based upon the symptoms, medical history, previous test results, and/or the diagnosis of a known cancer.

What Happens During a PET-CT Scan?

Typically, a PET-CT scan starts with certain preliminary checks and preparation. An intravenous line is inserted into the arm so that the radiotracer is given through this route. Once the patient has been given the tracer, the patient rests until the tracer has circulated throughout the body and is taken up by tissues. This time is typically 30 to 60 minutes for many types of PET scans. 

Then the patient is asked to lie on the scanning table. The patient's head is placed in the PET-CT scanner, which scans the table as it moves within the scanner. Patients should be immobile during the scan to ensure good quality imaging is obtained. The actual length of time for the scan is typically about 30 minutes, but the whole appointment takes a lot longer due to preparation time and the time that the tracer needs to pass through the system. Overall time depends on the type of scan and clinical requirements of the patient.

How Should You Prepare for a PET-CT Scan?

Preparation varies depending on the type of PET-CT and tracer being used. For many whole-body FDG PET-CT scans, patients are asked to remain fasting for several hours before the examination. Sugary or calorie-containing drinks also need to be avoided before the scan because blood sugar levels and food intake affect the distribution of the tracer. Water is generally allowed, but patients should follow the specific instructions provided by their doctor or diagnostic centre. People with diabetes need special preparation because blood sugar levels affect FDG PET imaging. Patients should also inform the medical team about their medicines, allergies, recent illnesses, and existing medical conditions. Women should inform their doctor if they are pregnant or breastfeeding.

Is a PET-CT Scan Painful?

A PET-CT scan is generally considered a non-invasive and mostly painless examination. The main discomfort comes from the injection used to administer the radiotracer. Some patients find it uncomfortable to remain still on the scanning table for a period of time. People who are anxious in enclosed spaces also feel some discomfort, although the PET-CT scanner is relatively open compared with some other imaging equipment.

How Much Does a PET-CT Scan Cost in India?

The PET-CT scan cost in India varies significantly depending on the type of scan, radiotracer used, body area being examined, facility, and clinical requirement. As a general reference, current pricing published by Molecular Diagnostics and Therapy lists several PET-CT examinations in the range of approximately ₹10,000 to ₹30,000, while its 18F-FDG whole-body PET-CT is listed at ₹24,000. Our centre also advertises a standard Digital PET-CT starting from ₹9,999, so the actual price depends on the specific scan prescribed. Therefore, patients should not assume that every PET-CT scan has the same price. Before booking, ask the centre which tracer and protocol are used and what is included in the quoted charges.

What Factors Affect PET-CT Scan Cost?

Several factors affect PET-CT scan charges. The type of radiotracer is one of the most important factors. Standard FDG PET-CT and specialised scans using tracers such as PSMA, DOTA, DOPA, or other targeted tracers have different prices. The area being scanned also matters. A whole-body scan, brain PET-CT, cardiac PET-CT, and targeted PET-CT have different costs. The type of CT performed as part of the examination, the use of contrast, the technology available at the centre, and the reporting requirements also affect the final price.

PET-CT Scan at Molecular Diagnostics and Therapy

Molecular Diagnostics and Therapy provides Digital PET-CT imaging services using advanced PET-CT technology. The centre lists whole-body and specialised PET-CT examinations, including 18F-FDG, PSMA, DOTA, DOPA, and other tracer-based scans. The centre's published information states that its Digital PET-CT service is available across Delhi NCR and nearby regions. Patients should check the specific scan price and preparation requirements before booking because the cost and preparation vary according to the prescribed examination.

What Should Patients Know Before Booking a PET-CT?

A PET-CT scan should generally be performed based on a doctor's recommendation. The right tracer and scan protocol depend on the suspected disease and the purpose of the examination. Patients should carry previous medical reports and imaging scans when advised, follow fasting instructions carefully, and inform the centre about diabetes, medications, allergies, pregnancy, or breastfeeding. It is also important to arrive on time. The radiotracer used for PET imaging has a short effective period, and delays sometimes affect the planned schedule. After the scan, patients are generally advised to drink plenty of water unless their doctor has given different instructions. The radiotracer loses its radioactivity over time and is gradually cleared from the body.

Conclusion

A PET-CT scan is a combination of information about the structure of the body and information about activity within tissues. This is important in modern cancer treatments and in certain heart and neurological diseases, and is therefore a useful imaging technique. Cancer PET-CT imaging is used to determine if cancer has spread, to monitor treatment response, and to detect recurrence of cancer. A full-body PET-CT scan is suggested if doctors require the image to provide a view of the disease in a wider area of the body.

The cost of a PET-CT scan bill in India depends on medical necessity and the facility, type of tracer used, and scan. Before scheduling a PET-CT, check the actual price and include what is being charged for the exam. Digital PET-CT imaging and a suite of specialised PET-CT exams are available at Molecular Diagnostics and Therapy. Patients are advised to communicate with the centre about the prescription and the process of the scan, with regard to the method of the examination, preparation, and cost, before the examination is carried out.