From: dicksiedael@aol.com
Sent: Wed 12/12/07 1:35 PM
To: cameocares@live.com
so did he SAY they wont take images a 2nd time as in for the 3-phase? Also, that description does not say how many images or when are needed for arthritis, fracture, etc. And even IF he was doing the one for cancer...that is often to rule it OUT...it doesn't mean you have it. When is it scheduled for?
-----Original Message-----
From: cameo
To: dicksie and bob
Sent: Wed, 12 Dec 2007 12:30 pm
Subject: MedlinePlus: Medical Encyclopedia: Bone scan
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mom, the bone scan is to rule out cancer. Read this thing here. It says for infection they do a 3 phase process, where they inject you, take photos, and then take photos later. To rule out CANCER however, they just inject you and then wait several hou
Medical Encyclopedia: Bone scan
URL of this page: http://www.nlm.nih.gov/medlineplus/ency/article/003833.htm
Alternative names
Scintigraphy - bone
Definition
A bone scan is a test that detects areas of increased or decreased bone metabolism (turnover). The test is performed to identify abnormal processes involving the bone such as tumor, infection, or fracture.
How the test is performed
A radiotracer (a bone-seeking radioactive material) is injected into vein, so it travels through the bloodstream. As the material wears away, it gives off radiation. This radiation is detected by a camera that slowly scans your body. The camera takes pictures of how much radiotracer collects in the bones.
If a bone scan is done to see if you have a bone infection, images will be taken shortly after the radioactive material is injected, as well as 3 to 4 hours later, when it has collected in the bones. This is called a 3-phase bone scan.
To evaluate metastatic bone disease, images are taken only after the 3 to 4 hour delay.
The scanning part of the test will last about 1 hour and may require you to change positions.
How to prepare for the test
You must remove jewelry and other metal objects. You may be asked to wear a hospital gown.
How the test will feel
There is a small amount of pain when the needle is inserted. During the scan there is no pain. You must remain still during the examination, and you will be instructed when to change positions by the technologist.
You may experience some discomfort due to lying still for a prolonged period of time.
Why the test is performed
This test can help determine whether there is bone tumor, fracture, infection (osteomyelitis), or metabolic disorder.
Normal Values
Normal distribution areas appear uniform and gray throughout all the bones in your body.
What abnormal results mean
The images should show that the radioactive material has been evenly distributed throughout the body. There should be no areas of increased or decreased distribution. "Hot spots" are areas where there is an increased accumulation of the radioactive material. "Cold spots" are areas that have taken up less of the radioactive material.
What the risks are
If you are pregnant or nursing, the test may be postponed to prevent exposing the fetus to radiation.
The amount of radioactivity in the injection is very small, and virtually all activity is gone from the body within 2-3 days. Although it is extremely rare with bone scanning agents, a person may develop rash, swelling, or anaphylaxis (severe allergic response).
There is a slight risk of infection or bleeding with any intravenous injection.
Special considerations
Some abnormalities that may be identified on radionuclide bone scans include:
* Tumors that have spread from other parts of the body to the bone (metastatic disease)
* Primary bone tumors
* Fractures
* Bone infections (osteomyelitis)
* Degenerative diseases of the bones, such as arthritis
* Rickets
* Fibrous dysplasia
* Paget's disease
* Avascular necrosis
* Radiation changes
It is important to understand that bone scan findings must be correlated with other imaging studies, in addition to clinical information. You should always discuss the significance of abnormal findings with your health care provider.
Update Date: 8/22/2006 Updated by: Jonathan Gross, M.D., Department of Radiology, Columbia University Medical Center, New York, NY. Review provided by VeriMed Healthcare Network.
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