FDG PET/CT Scan
About FDG PET/CT Scan
An FDG PET/CT scan is a highly advanced, non-invasive imaging test that blends two powerful technologies to help identify diseases with exceptional accuracy. The scan provides both functional and structural insights, allowing doctors to assess cell activity and visualize detailed organ structures in a single exam.
Components of FDG PET/CT Scan
1. FDG PET (Fluorodeoxyglucose Positron Emission Tomography)
This part of the scan helps measure the activity of cells in the body. A small, safe amount of radioactive glucose (FDG) is injected into your bloodstream. Since cancer cells and other highly active cells absorb more FDG, they show up as brighter areas on the PET scan, helping identify abnormal activity.
2. CT Scan (Computed Tomography)
A CT scan uses X-rays to capture detailed, cross-sectional images of your body. It helps doctors see the structure of your organs and tissues clearly, making it easier to identify issues.
Procedure of an FDG PET/CT Scan
The process of undergoing an FDG PET/CT scan is straightforward, and here’s what you can expect
01. Preparation Before the Scan
Fasting: Fast for at least 6 hours before the scan.
Blood Sugar Level: It’s important that your blood sugar level is below 200 mg/dL. High blood sugar levels can affect the accuracy of the scan, as the FDG will be taken up by normal cells as well, making it harder to detect abnormalities.
Scan Timing: FDG PET/CT scans are usually done in the morning, and you should arrive on an empty stomach for best results.
02. Injection of FDG Tracer
A small amount of FDG (radioactive glucose) will be injected into your vein. This glucose is absorbed by active cells, particularly cancerous ones, making them visible during the scan.
03. Resting Period
After the injection, you’ll need to relax for 45-60 minutes. During this time, the FDG will circulate and be absorbed by the cells in your body.
04. Scanning Process
Both the PET and CT scans will take place in a single session. The CT scan provides detailed pictures of your body’s structure, while the PET scan measures the metabolic activity of the cells. The whole procedure usually lasts between 60 to 90 minutes.
05. Comfort and Relaxation
The procedure is usually painless. Some people may feel a bit uneasy in the scanning machine, as it can be a tight space, but it’s quick and not uncomfortable. The image acquisition time in the Digital PET scanner is of 10 minutes only.
Why is the FDG PET/CT Scan Important?
FDG PET/CT scans are used in many important areas of healthcare, and they can help doctors make better decisions for treating a variety of conditions:
Benefits of FDG PET/CT Scan
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