Items tagged “bone scan”
5 results found
Article
Contiguous bone activity
Contiguous bone activity is a bone scan phenomenon seen in tumors which incite a regional hyperemia. Increased activity on blood pool images is seen extending across joints and to adjacent bones. This should not be mistaken for direct tumor involvement.
An example of a tumor which may demonstr...
Article
Technetium 99m-methyl diphosphonate
Technetium 99m-methyl diphosphonate (99mTc MDP) is a radiotracer used in nuclear medicine especially for bone scintigraphy. Any disease process which results in extracellular fluid expansion will lead to accumulation of this tracer.
Radionuclide profile
photon energy: 140 keV
physical half-li...
Article
Tram-track sign (bone)
The tram-track sign is sometimes seen on delayed bone scan images. They can appear as symmetric linear increase in tracer accumulation along diaphyseal and metaphyseal surfaces of long bones. Corresponding to similar periosteal reaction seen on radiographs. Bone scan findings precede radiographi...
Article
Golden arches sign (knees)
The Golden arches sign is a nuclear medicine sign often seen on bone scan in patients with total knee prosthesis.
The femoral condylar prosthesis results in two central photopenic regions with two 'hot' arches formed around the periprosthetic region.
This finding is non-specific and may sugges...
Article
Radium-223 dichloride
Radium-223 dichloride, trade name Xofigo, is a radiopharmaceutical approved for the treatment of patients with symptomatic bone metastases and no visceral disease from prostate cancer resistant to anti androgen therapy. The molecule mimics calcium and forms a complex with hydroxyapatite at sites...
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