(click on procedure name for more details):
* The ultrasound-guided liver biopsy video was produced by freehivinfo. The ultrasound-guided thyroid biopsy video was produced by SouthSound Radiology. Northwest Community Healthcare does not have affiliations with these organizations.
What is PET/CT Scan?
Positron Emission Tomography, also called a PET scan, is an examination that involves producing physiologic images based on the detection of radiation from the emission of positrons. Positrons are tiny particles emitted from a radioactive substance administered to the patient. The subsequent views of the human body developed by PET are used to evaluate a variety of diseases. Advance in technology have now combined PET imaging with CT imaging to provide accurate localization of abnormalities found with PET imaging.
How it is performed
You will be given the radioactive substance as an intravenous injection This radioactive substance is produced in a machine called a cyclotron and attached, or tagged, to a natural body compound, most commonly glucose. Once this substance is administered to the patient, the radioactivity localizes in the appropriate areas of the body and is detected by the PET scanner. The substance will then take approximately 30 to 60 minutes to travel through your body and be absorbed by the tissue under study. You will be asked to rest quietly in a partially darkened room and to avoid significant movement or talking, which may alter the localization of the administered substance. Following this you will be placed on the examination table for your scan. Scanning takes an additional 30 to 45 minutes.
How to prepare
You should wear comfortable and loose fitting clothing. Diabetics should ask for specific diet guideline to control glucose level during the day of the test.