Skeletal scintigraphy, also known as bone scintigraphy or bone scan, is a nuclear medicine imaging technique used to evaluate various bone conditions. It involves the injection of a small amount of radioactive tracer, usually technetium-99m methylene diphosphonate (Tc-99m MDP), into the bloodstream. This tracer accumulates in the bones, particularly in areas of increased metabolic activity or blood flow.
After the injection, the patient waits for a period of time to allow the tracer to distribute throughout the body and concentrate in the bones. Then, a gamma camera is used to detect the gamma rays emitted by the tracer. Images are taken from various angles to create a detailed picture of the bones.
Skeletal scintigraphy can help diagnose a range of bone disorders, including fractures, infections, bone tumors, metastatic cancer, arthritis, and bone trauma. It can also be useful in evaluating joint replacements and detecting bone metastases in cancer patients. The procedure is generally safe, with minimal risks associated with the radioactive tracer. However, it’s essential for patients to inform their healthcare provider if they are pregnant or breastfeeding, as special precautions may be necessary.
