Brain Pet Scan: Preparation, Procedure, and the Requirements

26 Oct 2022

Brain Pet Scan: Preparation, Procedure, and the Requirements

What is a Brain PET scan?

A brain PET scan( Positron emission tomography of the Brain) is an imaging procedure that allows doctors to see the functioning of your brain. Following the bloodstream absorption of radioactive "tracers," the scan records images of the brain's activity. The substances like glucose(the brain's energy source) have these tracers "attached" to them (sugar). The brain will use glucose more quickly in active areas than in passive ones. It can be seen through a PET scanner, which helps doctors assess how the brain is functioning and spot any anomalies.

Why is a brain PET scan performed?

The exam provides precise information about the brain's dimensions, structure, and functions. A brain PET scan, in contrast to conventional scans, gives medical professionals a picture of the brain's anatomy as well as its functionality.

It helps diagnose:

* check for cancer and its' spread to the brain

* diagnose dementias, including Alzheimer’s disease

* differentiate between Parkinson’s disease and other brain-related conditions

* prepare for epilepsy surgery

How one Should Prepare for a brain PET scan?

* Any medications you may be taking, including prescription, over-the-counter, and even dietary supplements, should be disclosed to your doctor.

* Before your treatment, you could be told to fast for up to six hours. You'll have access to water.

* If you think you might be pregnant or are pregnant, tell your doctor.

* Additionally, you must disclose to your physician any existing medical issues.

How a brain PET scan is performed?

* You'll be led into the procedure room, where a chair will be waiting for you. An intravenous catheter (IV) will be inserted into your arm by a technician. Through this IV, a unique dye containing radioactive tracers will be put into your veins.

* You will have to wait before the scan starts because your body requires time to absorb the tracers as blood passes through the brain. Normally, this takes an hour.

* You will then get the scan. To do this, you must lie on a little table that is connected to the PET machine.

* You must remain motionless while being scanned. You'll be informed by the technician when you need to stop moving.

* The scans capture the brain activity as it occurs. Both still photos and video can be taken of these. In regions where blood flow has risen, the tracers are concentrated.

After a brain PET scan

After the test, it's a good idea to drink a lot of water to assist your body flush the tracers out. Typically, twenty-four hours is all it takes for tracers to leave your body.


A Brain PET Scan is a crucial diagnostic tool helps in detecting a wide range of chronic brain-related conditions, such as cancer, brain disorders. Doctors usually recommend Brain PET scan to diagnose, monitor and treat various health conditions. If you are looking for the best PET Scan diagnostic centre to get a Brain PET scan done for you or your family member, then get in touch with the healthcare experts at GDIC( Ganesh Diagnostic and Imaging Centre). We have world-class PET Scan facility in our state-of-the-art NABH accredited diagnostic centre to provide quick & accurate results in a safe and customer-friendly environment.