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Bone densitometry is used to assess bone density and to screen for person with increased risk of osteoporosis. Generally speaking, the density of several key bones is measured. This procedure takes between 20 and 30 minutes and is painless. It is important however to remain still for the duration of the test.
Patients are asked to lie on their backs with their legs propped up on a cushion. Legs are elevated to flatten the pelvis and lower spine. Then, a scanner slowly passes over the areas to be examined. The device transmits a small quantity of x-rays through the body. A person's bone density is calculated using data collected by the computer. If the bone density of a hip must be measured, the foot is placed in a brace that is used to rotate the hip inwards.
Bone densitometry is a sure fire way to identify those at risk of developing osteoporosis. Osteoporosis has no symptoms. Countless people therefore do not know that they have it until they fracture a bone. Fractures are often the result of a minor fall and commonly involve the femur (thigh bone), hip or distal radius (bone in the forearm).
This type of test is used to detect bone mass loss before a fracture occurs. It is also helpful at estimating fracture risk and, if repeated annually, determining the rate at which bone loss is occurring. It can also be used to monitor and assess response to future treatment.
Bone density tests are recommended for men and women 50 years of age and older who have at least one major risk factor or two minor risk factors. The following table lists these risk factors.
|Major Risk Factors||Minor Risk Factors|
Results are analysed by a radiologist. They are generally given as a T score:
|Name||Description||Normal result||Abnormal result|
Before going for a blood test, examination or other, it is always a good idea for you to have a complete list of all prescription or over the counter medications and/or natural products you may be taking. If you are unsure or have any questions, your pharmacist will be able provide you with additional information.
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The patient information leaflets are provided by Vigilance Santé Inc. This content is for information purposes only and does not in any manner whatsoever replace the opinion or advice of your health care professional. Always consult a health care professional before making a decision about your medication or treatment.