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By Mayo Clinic staffBroken bones — especially stress fractures — are sometimes difficult to diagnose, so your doctor may suggest additional types of imaging scans.
X-rays
Most ankle and foot fractures can be visualized on X-rays. The technician may need to take X-rays from several different angles so that the bone images won't overlap too much. Stress fractures often don't show up on X-rays until the break actually starts healing.
Bone scan
For a bone scan, a technician will inject a small amount of radioactive material into an intravenous line. The radioactive material is attracted to your bones, especially the parts of your bones that have been damaged. Damaged areas show up as bright spots on an image taken by a scanner.
Computerized tomography
CT scans are useful because they can reveal more detail about the bone and the soft tissues that surround it, which may help your doctor determine the best treatment. CT scans take X-rays from many different angles and combine them to make cross-sectional images of internal structures of your body.
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