what does uptake mean on a bone scan

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What does strong uptake on a bone scan mean?

Increased activity

Bones
Strong uptake on bone scan means increased metabolic bone activity. This could indicate inflammation, fracture, infection, and/or bone tumor. These results usually are considered in the face of plain x-rays and exam to determine the diagnosis. Sometimes MRI/CT scan are also needed.
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What does radiopharmaceutical uptake from a bone scan mean in layman's terms?

Tracer uptake

Forearm_fracture
Read the report. But it sounds like it means that there is increased bone metabolism at that location. The radiopharmaceutical maps calcium activity (osteoblastic) of the bone. Can have increased metabolism in response to mechanical stress, a fracture, cancer, infection, and miscellaneous reasons.
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Dr. Edward Druy answered:

My bone scan says there is mild generalized increased uptake in left ankle and mid foot and in 1st met. Phalangeal areas. What does this mean?

Why the bone scan

Bone scans are done to evaluate for bone tumors, bone metastasis , infection, and occult fractures such as stress fractures. The study will often be mildly abnormal with arthritis. Your results sound like arthritis, and should be compared to the X-rays of your feet and ankles.
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What does increased uptake around the area of the left acetbulum mean? have had two hip replacements, last one in 1999. Bone scan shows significant bone lose and CT shows increased uptake around the area of the left acetabulum as well as the femoral comp

Uptake on bone scan

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Bone scan after injection of IV radiotracer is sensitive for changes in bone metabolism. Increased uptake is not specific but can be related to infection, fracture, loosening or even tumor. However CT shows anatomy and pathology. The loss of bone can occur from lack of normal weight bearing or disuse. Demineralization around stem of prosthesis can be loosening. You should consult your doctor.
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What does nonarticular osteoblastic focus mean on a bone scan?

Increased uptake

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Osteoblastic is term for new bone formation usually describing radiographic appearance. Translated to bone scan this means increased uptake which can be bone repair of infection, fracture, or tumor. Bone scans are very sensitive to bone turnover but not specific. Some primary bone tumors are osteoblastic in that they form bone. Nonarticular means focus of uptake away from a joint.
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Dr. Harry G. Zegel answered:

What exactly does it mean when your kidneys show up on a bone scan?

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Bone_scan
Likely you had an examination with Tc-99M MDP and some of this agent is normally excreted in the kidneys and will appear on the bone scan
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What do dark spots on my mri bone scan on my spine mean?

Unable to answer

Magnetic_resonance_imaging
T1 images will show water, air, and cortical bone as dark. T2 images will show air, cortical bone, and other hydrophobic substances as dark. So depends on image acquisition and anatomy.
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I had a bone scan today and i saw white shots, what does that mean?

Bones scan...

Bone_scan
Do you mean you saw white spots on the scan? Bone scans can be viewed on different color scales. Bones can be white on a black background or black on a white background depending on computer settings. Focally increased tracer on a bone scan can represent fracture, tumor, infection, degenerative disease, or even urinary contamination. Location and distribution of tracer uptake are important.
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Dr. Fidias De Leon answered:

Will a bone scan light up an area where an bone tumor was removed years before or does it mean the tumor has possibly returned?

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Cancer
A nuclear medicine bone scan would show areas where there is active bone remodeling (creation) happening. If the surgery was many years ago, the uptake in that region should not be more than other normal areas. If it is more prominent, suggest possible tumor recurrence. More imaging studies like MRI would be indicated and final biopsy for confirmation.
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loved one's bone scan points to possible metastatic cancer, but all blood tests and mamogram are negative for cancer. any ideas on what it could mean?

Positive bone scan

Cancer
A bone scan is performed following the injection of isotope, usually technetium 99m MDP. This radiotracer is accumulated in the skeleton. There can be areas of increased, decreased and normal uptake of the radiopharmaceutical. Bone scan is very sensitive for detecting lesions but not specific. Fractures, infection, arthritis, and tumors can be detected. Correlation with other imaging is necessary.
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