Get an accurate Brain PET scan at Ganesh Diagnostic. Learn about our advanced brain testing services and how we help diagnose neurological conditions.
Overview
The Brain PET Scan is a sophisticated diagnostic imaging procedure that provides detailed information about brain function rather than simply showing anatomical structures. The examination is used in neurology, oncology , psychiatry and neurosurgery. The Brain PET Scan is frequently combined with CT or MRI to provide both functional and anatomical information that improves diagnostic accuracy. The amount of radioactive tracer used is carefully controlled and usually leaves the body naturally within a short period. Because it evaluates the brain metabolism rather than structure alone the Brain PET Scan plays a significant role in diagnosing diseases at an early stage planning treatment monitoring disease progression and assessing the response to therapy.
What is the Brain PET Scan?
A Brain Positron Emission Tomography (PET) Scan is an advanced nuclear medicine imaging test that is used to evaluate metabolic activity and function of the brain. The tracer travels through the bloodstream and is absorbed by active brain cells. A specialized PET scanner detects the radiation emitted by tracer and produces detailed colour coded images that show areas of increased or decreased brain activity.
What is the Procedure of the Brain PET Scan?
The Brain PET Scan is performed in the hospital nuclear medicine department or specialized diagnostic imaging centre. Blood glucose levels may be checked because high glucose levels can affect accuracy of the scan. A small intravenous cannula is inserted into the vein and radioactive tracer FDG is injected. The patient then rests quietly for approximately 30 to 60 minutes while tracer circulates throughout the body and is absorbed by the brain. During this period patients are generally advised to remain relaxed and avoid unnecessary movement or conversation. After the uptake period the patient lies comfortably on a PET scanner table with the head positioned securely to minimise movement. The scanner acquires detailed images of the brain which takes around 20 to 45 minutes.
What is the Purpose of the Brain PET Scan?
The Purpose of the Brain PET Scan includes the following:
- To evaluate brain metabolism and function
- To diagnose Alzheimer's disease and other forms of dementia
- To investigate unexplained memory loss
- To identify the cause of epilepsy and locate seizure foci
- To assess Parkinson's disease and other movement disorders
- To evaluate brain tumours
- To distinguish recurrent brain tumours from scar tissue after treatment
- To investigate unexplained neurological symptoms
- To assess brain function following head injury
- To evaluate stroke-related brain damage
- To assist in diagnosing frontotemporal dementia
- To investigate cognitive impairment
- To support treatment planning for neurological diseases
- To evaluate patients before epilepsy surgery
- To investigate certain psychiatric disorders in selected cases
- To differentiate between various causes of dementia
- To assist in clinical research involving brain function
- To provide functional information alongside CT or MRI findings
Frequently Asked Questions (FAQ)
What is Brain PET Scan?
A Brain PET Scan is a nuclear medicine imaging test that evaluates the brain metabolism and function.
Why is the Brain PET Scan performed?
It is used to diagnose neurological disorders such as dementia, epilepsy, brain tumours and Parkinson's disease.
Is fasting required?
Yes, fasting for several hours is usually required before the scan.
Does this test involve radiation?
Yes it involves a small carefully controlled amount of radiation from the radioactive tracer.
Can Brain PET Scan detect Alzheimer's disease?
Yes it is used to support the diagnosis of Alzheimer's disease and other dementias.
