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Bone scintigraphy

Implementation

  • The 99mTc bisphosphonate complex is injected intravenously. 99mTc-labelled bisphosphonate binds to the osteoblasts, especially in the areas with high perfusion and high osteoblast activity.  
  • In dynamic image taking for assessment of blood supply and vascularization, images are taken during injection of the radiopharmaceutical drug.
  • Static images of the whole body or parts of the body are taken around 2.5 hours after the injection.
  • Between injection and image taken, the patient should drink copious amounts of water (about 1 liter) and eliminate as often as possible to reduce radiation exposure in the bladder.
  • The bladder should be empty before image capture. (Around 50% of injected activity is eliminated via the kidney in the urine during the first hours.
  • With a one-head camera, the whole body test takes around 30 minutes.
  • With a two-head camera, the whole body test takes around 50 minutes.
  • It is important that the patient remains completely still during the test. If the patient is unable to lie still for at least 20 minutes, multiple images can be taken instead of one whole body scan.
  • It can be necessary to supplement image taking with individual images using special angles (3-10 minutes per image).

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