تعريف
A bone scan is a test that detects areas of increased or decreased bone activity. These may indicate bone injury or disease. Radioactive isotopes and tracer chemicals are used to highlight problem areas.
أسباب الاختبار
The test is done to detect an abnormal process involving your bone, including the following:
- Stress injuries (such as, stress fracture, shin splints)
- Infection ( osteomyelitis)
- Arthritis
- Bone tumors
- Cancer
- صدمة
- Metabolic disorders (such as, Pagets Disease)
- Nutritional disorders that can affect bones, like low vitamin D levels (for example,rickets)
- Death of an area of bone tissues due to blocked circulation ( avascular necrosis)
المضاعفات المحتملة
Complications are rare, but no procedure is completely risk free. If you are planning to have a bone scan, your سيقوم الطبيب بمراجعة القائمة من المضاعفات المحتملة، والتي قد تشمل:
- Allergic reaction to the injected material
- العدوى
Some people worry about the use of radioactive material in a bone scan. The amount of radioactivity is very small, though larger than you would receive from common x-ray procedures, like a chest x-ray or dental x-ray. The radioactive material is eliminated from the body within 2-3 days.
تأكد من مناقشة هذه المخاطر مع طبيبك قبل الاختبار.
ما يمكن توقعه
قبل الاختبار
Tell your doctor if you are pregnant or breastfeeding. You may need to discard breast milk for several days after a bone scan.
Tell your doctor if you have recently had anything that contains barium (for example, contrast dye) or bismuth (found in some medicines).
Three hours before the scan, you will receive an injection of radioactive tracer chemicals. You should drink plenty of fluids between the time of the injection and the scan. You will also be asked to empty your bladder before the scan.
وصف الاختبار
You will lie on your back on an imaging table. A camera above and below the table will slowly scan you. You may be asked to move into various positions as the scan is done. It is important to lie still when not told to move. The camera will be able to detect small amounts of radioactivity in the injected material. This will allow the doctor to see areas where there may be bone injury or disease.
بعد الاختبار
The injection site will be checked for redness and swelling.
كم من الوقت سيستغرق ؟
You will be in the scanner for 20-60 minutes. Sometimes another scan is done after 24 hours.
هل ستسبب الالم؟
No, the test is painless, except for the mild discomfort of the injection.
نتائج
If your bone tissue is healthy, your scan will show that the chemical has spread evenly to all of your bones. If there is an area of disease, darker or lighter areas (hot or cold spots) will be evident on the scan. These will show the areas with abnormally active bone breakdown or repair.
Depending on your results, you may need further tests, such as:
- X-ray —a test that uses radiation to take a picture of structures inside the body, especially bones
- التصوير المقطعي المحوسب - نوع من الأشعة السينية يستخدم جهاز كمبيوتر لعمل صور لهياكل داخل الجسم
- فحص التصوير بالرنين المغناطيسي - اختبار يستخدم الموجات المغناطيسية لعمل صور لهياكل داخل الجسم
- Bone density test
- خزعة
استدعاء الطبيب
Call your doctor if you have questions about the test, your condition, or your test results.
في حالة الطوارئ ، اتصل على المساعدة الطبية على الفور.