A cannula or a small tube, is placed into one of the veins in your arm through which a radioactive solution is administered.
After the injection, images are sometimes taken highlighting the blood supply to the area being investigated.
Before the scan can take place, several hours need to pass to allow the material to accumulate into your bones and appear in the scans.
Patients can leave during this time and return at a set time given for the next part of the test.
During the scan, patients have to have an empty bladder and not have any metal articles of clothing or jewellery on them.
The technologist will then use a gamma camera to scan the patient’s body which can take between 30 and 90 minutes.
The scan will be reported by a specialist consultant and the results will be forwarded to the referring clinician with 24 hours.