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A bone scan or bone scintigraphy / s ɪ n ˈ t ɪ ɡ r ə f i / is a nuclear medicine imaging technique used to help diagnose and assess different bone diseases. These include cancer of the bone or metastasis, location of bone inflammation and fractures (that may not be visible in traditional X-ray images), and bone infection (osteomyelitis).
Imaging to measure renal function is done by attaching 99m Tc to mercaptoacetyl triglycine ; this procedure is known as a MAG3 scan. Technetium-99m (Tc-99m) can be readily detected in the body by medical equipment because it emits 140.5 keV gamma rays (these are about the same wavelength as emitted by conventional X-ray diagnostic equipment ...
Effective doses can range from 6 μSv (0.006 mSv) for a 3 MBq chromium-51 EDTA measurement of glomerular filtration rate to 11.2 mSv (11,200 μSv) for an 80 MBq thallium-201 myocardial imaging procedure. The common bone scan with 600 MBq of technetium-99m MDP has an effective dose of approximately 2.9 mSv (2,900 μSv). [24]
The metastable technetium-99m (99m Tc) is a short-lived (half-life about 6 hours) nuclear isomer used in nuclear medicine, produced from molybdenum-99. It decays by isomeric transition to technetium-99, a desirable characteristic, since the very long half-life and type of decay of technetium-99 imposes little further radiation burden on the body.
The most common isotope used in diagnostic scans is Technetium-99m, used in approximately 85% of all nuclear medicine diagnostic scans worldwide. It is used for diagnoses involving a large range of body parts and diseases such as cancers and neurological problems. [ 1 ]
Immunoscintigraphy is performed using a variety of radiopharmaceuticals, for a large range of purposes. Colorectal cancer is one of the most studied areas, with indium-111 or technetium-99m labelled epitopes of the carcinoembryonic antigen. [3]
Technetium-99m–labeled bisphosphonate attaches to calcium at sites of active bone formation. [15] Bone scans are more sensitive and can identify lesions earlier than plain radiographs. [ 15 ] However, these methods are less effective at identifying purely osteolytic lesions and will also highlight other areas of bone formation, such as those ...
Technetium (99m Tc) medronic acid is a pharmaceutical product used in nuclear medicine to localize bone metastases [1] as well as other diseases that can alter the natural turn-over in the bone by bone scintigraphy. [2]