Diagnostics·Diagnostics
PET CT preparation
Informed by recognized medical guidance
Overview
PET CT is a scan that combines two types of imaging: positron emission tomography (PET) and computed tomography (CT). The PET part shows how your cells are working, and the CT part shows detailed pictures of your organs. Preparation means the steps you need to take before the scan to make sure it goes smoothly and gives the best results.
Key facts
- You will receive an injection of a small amount of radioactive tracer before the scan.
- You need to avoid eating or drinking anything except water for several hours before the scan.
- The scan itself usually takes about 30 to 60 minutes.
PET CT scans are a common and widely used imaging test in hospitals, especially for people with cancer, heart conditions, or infections that are hard to diagnose.
This scan is used for people of all ages, but the preparation steps may change depending on your age, weight, and medical history. Your healthcare team will give you specific instructions.