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A positron emission tomography or PET scan is one of the most advanced non-invasive image diagnostic tests that is used to detect a host of ailments, as well as to measure the oxygen usage, blood flow, and utilization of sugar.
The PET scan test is part of the Nuclear Medicine classification and is often conducted with CT scan and X-ray simultaneously using the same machine, thus reducing the cost, time and necessity for multiple standalone tests.
The PET scan machine is similar to what an MRI or a CT scan machine looks like but much more advanced, and the procedure takes about 30 mins to 2 hours (depending on the PET scan type) to complete with no hospitalisation required.
Certain PET scan types involve the use of a soluble radioactive tracer administered either orally or intravenously to check regular and irregular metabolic activities, thus detecting and identifying the presence of an illness.
This image diagnostic test is often recommended in case of critical medical conditions, such as cancer, brain issues, and cardiovascular diseases. During treatment of an illness, a PET scan is also conducted to evaluate the effectiveness of the treatment.
Depending on your doctor’s recommendation, we offer a variety of PET scan services, including:
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While a CT scan offers detailed imaging on the organs and tissues, a PET scan, on the other hand, is conducted to identify abnormal activity, indicative of an illness. Generally, a PET-CT scan is conducted in tandem for the best results.
The actual PET scan procedure takes about 45 minutes, however, it can take up to an hour for the radioactive tracer to dissolve, during which you’ll be required to rest. The entire process can take up to 2 hours to complete.
No. While a PET scan is the ideal imaging test to detect and identify cancer, not all cancers can be determined with this procedure.
A variety of cancers require additional pathological diagnostics and other imaging tests to identify the cancer type.
Typically, a PET scan report takes about 24 hours to be delivered. However, depending on the type of the scan and the medical condition, the radiologist will confirm the exact time for report delivery.
A full-body PET scan can show the functioning of organs and is also used to determine the blood flow, sugar absorption, and oxygen usage by the various organs.
Various studies on image testing accuracy have shown that the PET scan is highly accurate with pinpoint results for up to 90% of the patients.
Multiple PET scans are not recommended as the procedure involves radiation, in the form of soluble tracers.
To get a PET scan, you’ll need a doctor’s recommendation, which is only given if it’s necessary.
Most current-age PET scanners feature an image resolution of up to 4mm, which can easily detect tumours up to 7 mm in size.
However, rapid advancements are being made in image testing technologies that will give future PET scanners enhanced sensitivity, contrast, resolution, and image reconstruction algorithms.
The PET scan is a non-invasive imaging test with minimal risks involved.
However, due to the use of radioactive tracer, it’s best to discuss with your doctor about the potential risks, especially if you are:
Although, there are hardly any side effects of a PET scan, however, due to the ingestion of radioactive tracer, the following precautions should be taken.
Your doctor will most likely recommend the following steps to help you prepare for the PET scan.
-Rashmika Mandanna, Brand Ambassador