Whole Body 99m-Technetium Bone Scan (with IV Injection)

What Is a Bone Scan?

A bone scan involves injecting a small amount of a radioactive substance called technetium-99m (99mTc) into your vein. This tracer travels through your bloodstream and collects in areas of your bones. A special camera then creates images of your bones to see how much tracer has gathered, indicating bone activity levels.

How Is the Procedure Performed?

You’ll lie down on a table while the technician inserts a needle into your vein (usually in your arm). The injection takes a few seconds, and you may feel a slight pinch. Afterward, you’ll rest for about 30–60 minutes while the tracer spreads through your body. The imaging part usually takes 15–30 minutes, where you’ll lie still on the scanner table.

What Does the Scan Detect?

The scan can show areas with increased or decreased bone activity, which may indicate conditions such as fractures, arthritis, infections, or bone metastases (cancer that has spread to bones). Darker or lighter spots on the images help identify these differences.

Preparation Before the Scan

No special preparation is needed, but inform your doctor about any medications you’re taking, especially blood thinners or contrast agents. Avoid caffeine or nicotine for 12 hours before the scan, as they may affect tracer uptake.