Nuclear medicine scans - general information
Nuclear medicine is a medical specialty that uses radioactive substances to diagnose and treat diseases. These substances, called radiopharmaceuticals, are usually injected into the patient in very small amounts. They do not cause side effects or alter normal body functions, unlike conventional medications.
The focus in nuclear medicine is on how organs and tissues are functioning, rather than just their anatomical structure. The radiopharmaceuticals are tracked in the body using imaging techniques like gamma cameras or PET scanners. These images help doctors understand how different parts of the body are working.
During a scan, patients typically lie on a table while the camera or scanner takes detailed images. For gamma camera scans, patients generally need to stay still for 5 to 60 minutes, depending on the type of scan. PET scans, often combined with CT or MRI, also require lying still for about 15 to 90 minutes.
While a gamma camera or PET scanner might look complex, they work differently from X-ray machines. Instead of using a brief, intense X-ray burst, these devices gradually capture the radiation emitted by the patient over a longer period. In some cases, the camera may move around the patient to provide a comprehensive view of how the radiopharmaceutical is distributed in the body.
If you have concerns about moving to the examination table or any other aspect of the procedure, please contact the nuclear medicine department before your appointment. Our staff will ensure that you are comfortable and well-cared-for throughout the examination.