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Doctor insights on: Three Phase Bone Scan Interpretation

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Mri shows three lobulations in bone above knee. Bone scan says everything ok. How could mri and bone scan show two different results?

Mri shows three lobulations in bone above knee. Bone scan says everything ok. How could mri and bone scan show two different results?

Different studies: The meaning of "lobulations" in the bone on an MRI study is uncertain. This may mean an osteophyte, cortical thickening, old trauma, a normal variant, or something else. The bone scan measures bone chemistry and activity such as repair of the bone. When the bone scan is normal with these findings on MRI, it means normal bone chemistry, and indicates a non serious problem. ...Read more

Bone (Definition)

Bone is a living growing tissue made mostly of collagen (protein that provides soft framework) & the mineral calcium phosphate that adds strength & hardens the framework. Two types of bone are found in the body; cortical (dense compact outer layer) & trabecular (makes up inner layer, ...Read more


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Could a bad scoliosis cause a wrong interpretation of a bone scan, looking for cancer?

Could a bad scoliosis cause a wrong interpretation of a bone scan, looking for cancer?

Sometimes: Scoliosis deforms the spine with a curvature. On bone scan the convex side of the curvature is usually more active than the concave side. With surgery for scoiiosis, active spots can occur where breaks in fusion. High incidence of spondylolysis with scolisis, fractures at the L5 level of lumbar spine. Older people with scoliosis have arthritis.All active spots have to be correlated with other images. ...Read more

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What's a bone scan for?

What's a bone scan for?

Bone metabolism: Bone scan involves intravenous injection of radio tracer usually technetium 99m mdp which accumulates in skeleton. Scan may involve early phase (5-10 min) and late phase (2-3 hr) imaging. Increased uptake is seen in fractures, tumors, infection, etc. Decreased activity is seen in metal artifacts, aggressive tumor/infection, & loss of blood supply to bones. Bone scan very sensitive but not specific. ...Read more

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What is a bone scan for?

What is a bone scan for?

Cancer or pain: Usually in adults it is used to detect metastatic cancer. It also is frequently used to evaluate for possible stress fractures and other bone problems. ...Read more

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How does a bone scan work?

How does a bone scan work?

Images calcium metab: Usually in adults the bone scan is used to detect metastatic cancer. It also is frequently used to evaluate for possible stress fractures in people with bone pain. There are many additional uses. It works by injecting a tracer that is taken up in bone similar to calcium. The small amount of radioactivity is then imaged with a camera (gamma or pet) utilizing fluorescence from the crystal. ...Read more

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What do bone scan results tell you?

What do bone scan results tell you?

Hot spot, cold spots: The radiologist looks for evidence of abnormal bone metabolism on the scans. These show up as darker "hot spots" and lighter "cold spots" where the tracers have or haven't accumulated.

Although a bone scan is very sensitive to abnormalities in bone metabolism, it's less helpful in determining the exact cause of the abnormality. ...Read more

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What lights up in a normal bone scan?

What lights up in a normal bone scan?

New bone matrix: The injection is something that your body uses like a phosphate (methylene diphosphonate). In general when your body makes new bone, it will "grab" some of this. In young people we see more uptake near the ends of bones where they are growing. All bones will pick a little up since we are always making new and loosing some of the old. Kidneys filter out the rest. ...Read more

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What does a healthy bone scan look like?

What does a healthy bone scan look like?

normal uptake: Bone scan involves intravenous injection of radiotracer usually technetium 99m mdp which accumulates in skeleton. Scan may involve early phase (5-10 min) and late phase (2-3 hr) imaging. Increased uptake is seen in fractures, tumors, infection, etc. Decreased uptake is seen in metal artifacts, aggressive tumor/infection, & loss of blood supply to bones. No abnormal uptake in skeleton is normal. ...Read more

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Can you please tell me about a bone scan?

Can you please tell me about a bone scan?

Bone function: Bone scan involves intravenous injection of radio tracer usually technetium 99m mdp which accumulates in skeleton. Scan with camera: early phase (5-10 min) and late phase (2-3 hr) imaging. Increased uptake is seen in fractures, tumors, infection, etc. Decreased activity is seen in metal artifacts, aggressive tumor/infection, ; loss of blood supply to bones. Bone scan very sensitive but not specific. ...Read more

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How can I convert bone scan t-scores to z-scores?

How can I convert bone scan t-scores to z-scores?

Not usually: T scores are for patients over 18 yr and z scores for children under 18 yr. The controls for children are bases on ages, color, and sex. The t scores are compared to other adults. Dexa centers who perform studies on children have software to generate both values. T scores cannot be used accurately for children and z scores not in adults. ...Read more

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What are the processes involved during a bone scan?

What are the processes involved during a bone scan?

Bone metabolism: Bone scan involves intravenous injection of radio tracer usually technetium 99m mdp which accumulates in skeleton. Scan may involve early phase (5-10 min) and late phase (2-3 hr) imaging. Increased uptake is seen in fractures, tumors, infection, etc. Decreased activity is seen in metal artifacts, aggressive tumor/infection, & loss of blood supply to bones. Bone scan very sensitive but not specific. ...Read more

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What is the average time to have a bone scan completed?

About 3 1/2 hours: From the start and taking of initial pictures to the delayed uptake pictures. ...Read more

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Please tell me what happens during a bone scan procedure?

Please tell me what happens during a bone scan procedure?

Imaging of skeleton: Bone scans differ at different institutions. All involve IV injection of radiopharmaceutical usually tc99m mdp, related to phosphorous, deposited in skeleton. Scan one or more phases. Immediate imaging after injection (angiographic phase) for minute, then soft tissue imaging 5 to 15 min after injection. All involve delayed imaging at 2-3 hours after injection. Part or whole body imaged with camera. ...Read more

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I'm having a "bone scan" tomorrow. What does a bone scan detect?

I'm having a "bone scan" tomorrow. What does a bone scan detect?

Areas of: Abnormal bone turnover or metabolic activity, etiologies of which include trauma, infection, inflammation, and cancers. ...Read more

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I had a bone scan today and I saw white shots, what does that mean?

I had a bone scan today and I saw white shots, what does that mean?

Depends: That is really hard to say without seeing the study. Uptake of the material indicates bone metabolism....We often see more metabolism near joints. If there is a focal area of intense metabolism (in an area that doesn't usually look that way), it could be due to trauma (fracture), infection or even tumor. These things must be assessed together with history and other lab data. And physical exam. ...Read more

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I am getting a "bone scan" tomorrow. What, exactly does a bone scan detect?

I am getting a "bone scan" tomorrow. What, exactly does a bone scan detect?

Bone metabolism: Bone scan involves intravenous injection of radio tracer usually technetium 99m mdp which accumulates in skeleton. Scan may involve early phase (5-10 min) and late phase (2-3 hr) imaging. Increased uptake is seen in fractures, tumors, infection, etc. Decreased activity is seen in metal artifacts, aggressive tumor/infection, ; loss of blood supply to bones. Bone scan very sensitive but not specific. ...Read more

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What to do if I'm having a bone scan tomorrow. What, exactly does a bone scan detect?

What to do if I'm having a bone scan tomorrow. What, exactly does a bone scan detect?

Bone activity: U R injected with a radioactive agent, which has a characteristic of tagging active bone growth cells. It will only tell someone where there is increased activity, such as in growth lines in the young, fracture healing, infection, and tumors of bone. Radiation exposure is negligible as the scanners R able to pick up the signals easily. ...Read more

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What can I do if my latest bone scan shows results in both focal and linear areas, what is the difference?

Many possibilities.: It depends why you had your bone scan done. Focal lesions means "localized" and can have various shapes (circular, linear.) and various localizations. A linear lesion usually means a fracture or compression such as seen in the vertebral column. These are two different descriptive terminologies. Again, it should be easier to respond to your answer if we had the results of your scan. Good luck. ...Read more

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Dr. Just ordered a bone scan to find out the density I guess never had one before can you please tell me how this test is done or all about it and why?

Dr. Just ordered a bone scan to find out the density I guess never had one before can you please tell me how this test is done or all about it and why?

Bone Density: I'm assuming you mean a DEXA scan for bone density? It is a quick, simple, painless test. It is essentially equivalent to getting an X-ray. You lay on the scan table, the tech takes the scan, and you are done. No preparation necessary. ...Read more

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Does a bone scan use radiation?

Does a bone scan use radiation?

Yes: It is a nuclrear medicine study that uses a small amount of radiation similar to xrays. The amount usrd is not in a range that is harmful or should be worrisome if the exam is clinically warrented. ...Read more

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Please tell me, could a bone scan show organ tumors?

Please tell me, could a bone scan show organ tumors?

Yes: Tc-mdp is a common tracer used for bone scans. The delivery / localization of tracer relies on blood flow. Therefore areas of increased blood flow have higher delivery of tracer. In addition, any actively calcifying process can show tracer uptake. Liver metastases from colon cancer are often seen on bone scan. ...Read more

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How do they do a bone scan on knees?

A radionuclide: Is injected intravenously, and immediate and delayed images are usually performed by placing you on the camera (gamma camera). ...Read more

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I'm only 34 and I have osteopenia (according to a bone scan). What can I do for it?

I'm only 34 and I have osteopenia (according to a bone scan). What can I do for it?

Dexa: Bone scan involves intravenous injection of radiopharmaceutical and imaging of the skeleton to assess areas of abnormal bone metabolism. Dual-energy x-ray absorptiometry (dxa)measures bone mineralization of hips and spine. Very low radiation form of x-ray, that is used to measure bone loss. Medication can be taken to increase bone mineralization. Dxa should not be repeated for at least 6months. ...Read more

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Expert opinions? Which has more radiation: bone scan or ct?

Expert opinions? Which has more radiation: bone scan or ct?

Sometimes same dose: Background radiation at sea level: 3 msv per year,
denver residents get: 6 msv per year, cross country flight: 0.02 msv, x ray chest: 0.06 msv, ct head: 3 msv, ct chest: 5 msv (equivalent to 100 chest xrays)
ct abdomen: 5-10, average bone scan 6.5 msv. Radiation depends on size of patient." radiation affects growing body in children more than adults. Doses to children are much less. ...Read more

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Radionucline bone scan process and use?

Radionucline bone scan process and use?

Bone abnormalities: Bone scan involves intravenous injection of radio tracer usually technetium 99m mdp which accumulates in skeleton. Scan may involve early phase (5-10 min) and late phase (2-3 hr) imaging. Increased uptake is seen in fractures, tumors, infection, etc. Decreased activity is seen in metal artifacts, aggressive tumor/infection, & loss of blood supply to bones. Bone scan very sensitive but not specific. ...Read more

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How does nuclear medicine do a bone scan?

How does nuclear medicine do a bone scan?

Tc-99m-MDP Bone Scan: Bone scan often provides an earlier diagnosis and demonstrates more lesions than are found by radiographic procedures. Tc-99m-mdp (methylene diphosphonate) is a bone seeking agent that concentrates in the mineral phase of bone. 2-3 hours after injection, 50%-60% of the activity localizing in bone and the remainder is cleared by the kidneys. F18-naf bone scans are done with pet cameras, r + expensive. ...Read more

Dr. Thomas Heston
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