Bone scan for prostate cancer: what to expect

It does not diagnose cancer by itself. Arthritis, healing injuries, inflammation, and other bone changes can also appear active, so the result is interpreted alongside symptoms, examination findings, blood tests, and other imaging.

A small amount of radioactive tracer is given into a vein. It travels through the bloodstream and collects more strongly where bone is being formed or repaired. After time for the tracer to circulate, a scanner makes images of the skeleton. The injection and imaging are separate parts of the appointment.

Areas of increased uptake are sometimes called hot spots. Their location and pattern help the clinical team decide whether they look related to prostate cancer or to a non-cancerous process. An uncertain area may lead to targeted X-rays, CT, MRI, or another scan before a conclusion is made.

Tell the imaging team about medicines, recent imaging, allergies, and any chance of pregnancy or breastfeeding. Follow the centre's instructions about food, drink, and medicines. You may be asked to drink fluids and empty your bladder before imaging because tracer also leaves the body in urine.

Ask when and how results will be shared. A normal scan may support the current management plan, while a suspicious finding can change which further tests or treatments are considered. The choice still depends on the wider prostate cancer assessment rather than this scan alone.

Seek urgent medical assessment for new severe back pain accompanied by leg weakness, numbness, difficulty walking, loss of bladder or bowel control, or numbness around the buttocks or genitals. These can signal pressure on the spinal cord and should not wait for a scheduled scan or clinic visit.

Contact the imaging service promptly if you develop swelling, marked pain, or a spreading rash after the tracer injection. For new bone pain without those emergency features, tell your oncology team so they can decide whether the timing or type of imaging should change.

You could ask what prompted the scan, whether another imaging test is also needed, what an indeterminate result would mean, and who will explain the report. If treatment is being discussed, ask how the scan findings affect its aim and which options remain suitable.