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Doctor insights on: How Does Nuclear Medicine Do A Bone Scan

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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

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Dr. TAPAN CHAUDHURI
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Nuclear Medicine (Definition)

The medical specialty of nuclear medicine involves the use of unsealed radioactive pharmaceuticals that can help image molecular flow throughout the body. The medical use of radiopharmaceuticals also includes the treatment of some cancers and bone pain. Nuclear medicine is separate from diagnostic radiology, which utilizes the use of external (sealed) radioactivity ...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 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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How does a DEXA scan work?

How does a DEXA scan work?

Sending two waves: The dxa (stands for dual-energy x-ray absorptiometry) machine sends beams of low-radiation x-rays with "two" distinct energy waves (hence the name dual) through the bones being scanned. One wave is absorbed mainly by soft tissue and the other by bone. The soft tissue amount can be subtracted from the total and what remains is a patient's bone mineral density. Hope this helps ! ...Read more

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How do bone scan and a pet scan differ?

How do bone scan and a pet scan differ?

Tracers..: The tracers are different. Bone scan usually uses TcMDP and PET scan uses F18-FDG (glucose). The bone scan is good for showing osteoblastic bone lesions and shows increased bone activity around a metastasis but not the actual metastasis itself. The PET can show glucose uptake in the actual tumor itself. PET is better for lytic bone lesions. CT part of PET/CT can show lytic and blastic lesions. ...Read more

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How does an arthritis specfialist use a bone scan?

How does an arthritis specfialist use a bone scan?

Several reasons: Not everything that causes symptoms similar to arthritis is actually arthritis. Most helpful bone scan is two phases, early soft tissue and delayed bone. Soft tissue of joints can show which joints are hyperemic or active. Delayed images may be normal. Multifocal osteomyelitis(crmo), metastatic disease, osteorotic bone with fractures, etc. Are causes. Bone scan can rule out mimicers of arthritis. ...Read more

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How come it's "safe" to take the nuclear stuff for a nuclear medicine scan?

How come it's "safe" to take the nuclear stuff for a nuclear medicine scan?

SMALL DOSE: It is relatively safe to take nuclear stuff for medical reason because the information you receive from the nuclear medicine scan (benefit) outweighs the small risk (small amount of radiation) that you receive from it. It has less risk that an x-ray, less risk than cigarette smoking, less risk than flying from new york to los angeles, and less risk than spending a day at the beach under hot sun. ...Read more

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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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How do a pet scan and a MRI scan differ?

How do a pet scan and a MRI scan differ?

See below: An MRI or magnetic resonance imaging is a study that provides anatomical description of a part of your body. A pet scan can provide further information aside from how it looks or appears. It utilizes radioactive material or tracers that see how cells in your body function. It can detect cancer cells not evident on MRI or ct, heart disease, infection and even neurological conditions like dementia. ...Read more

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What does strong uptake on a bone scan mean?

What does strong uptake on a bone scan mean?

Increased activity: 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. ...Read more

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How much does it cost me to get a pet CT scan in india?

How much does it cost me to get a pet CT scan in india?

Unlike many imaging: Procedures, whereeach test tries to pay off the cost of the instrument, each pet scan needs to buy a cyclotron produced dose of flurodeoxyglucose. It has a short half life, and it must be paid as well as the scanner. These will always have high cost of production so medical tourism may not work as well as for a procedure or a simple diagnostic study. ...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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How do they do a lung VQ scan on a person?

How do they do a lung VQ scan on a person?

Two steps procedure: A lung scintigraphy has two components. The ventilation part (v of v/q) which consists in inhalation of 99mtc-gaz or aerosols and the perfusion part ( q of v/q) which involves the intravenous injection of 99mtc-maa which are used to see the perfusion of the lungs. Usually a lung scan is performed to detect pulmonary emboli ( blood clots in the lungs) or to perform a preoperative evaluation ...Read more

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How long do a CT scan send radiation into your body?

How long do a CT scan send radiation into your body?

While: You are in the scanner and the images are being taken you are receiving a relatively small dose of radiation. Often this is less than a minute depending on what is being scanned. ...Read more

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How do a CT scan and a MRI differ?

How do a CT scan and a MRI differ?

Imaging tests: Ct uses radiation, like multiple x-rays. Mri uses magnets, and is very useful in characterizing soft tissue differences such as in the brain or joints, but also is more expensive and takes much more time. ...Read more

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How do a pet scan and a CT scan differ?

Anatomic/physiologic: Pet scan involves intravenous injection of radio tracer usually f18 fdg.Imaging of whole body occurs for localization of areas of increased glucose metabolism. Malignant tumors usually most active.Ct scan involves x-ray and performs anatomic imaging of parts of body usually head, chest, abdomen, pelvis, or extremities. Pet?Ct combines imaging modalities for anatomic localization of areas of uptake. ...Read more

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What does a thyroid scan do?

What does a thyroid scan do?

Thyroid scan: It's a nuclear medicine scan use to evaluate how well your thyroid is working. The result will give information on the size, shape, location and the overall activity of the gland. It can also tell you if a thyroid nodule is functioning or non-functioning and help your doctor determine whether a nodule biopsy is needed. More info with the link below: http://www.Webmd.Com/a-to-z-guides/thyroid-scan. ...Read more

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How can a CT scan actually work?

How can a CT scan actually work?

Multiple projections: A ct cross-sectional image (slice) is reconstructed from a combination of xrays shot from multiple directions/projections; therefore, there is no overlap of body parts and much better contrast compares to traditional xray images.. ...Read more

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Hello doctors, what does a nm gallium scan entail?

Hello doctors, what does a nm gallium scan entail?

Gallium... : First a radiotracer is injected intravenously. Then approximately 48 hours later, you will be imaged by a gamma camera until the necessary images are acquired. ...Read more

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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


Dr. Thomas Heston
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