Bone Density Scores for the Better Treatment Of Bone Problems  

In the area of medical radiology, there is bone mineral density test that helps to determine the health of human bones. Such test can easily identify osteoporosis and determine the risk of fractures. Under the dual-energy x-ray absorptiometry (DXA), physicians use two types of bone density scores in the measurement. These two scores are T score and Z score.

The DXA is an enhanced form of x-ray technology that helps to scale bone loss. Through this noninvasive medical test, a physician can diagnose some medical conditions. This test is often performed on the lower spine and hips of children and some adults. There is computed tomography scan along with some special software that can be used in the diagnosis of bone problems. Physicians have basically two bone density scores called T and Z scores based on the statistical unit of the standard deviation.

T score is a number of standard deviations below the average for a young adult at maximum bone density. Different T-scores depend on which group of young people is used as the reference. On the other hand, Z-score is the number of standard deviations below an average person of the same age. This bone density score is also being used as a reference for every group of people of the same age gender and weight.

A person can have one score at the femoral neck, hip and at the spine. Under the T score, the value is used in post-menopausal women and men over aged 50 that can predict the risk of future fracture. Under Z score, a patient’s BMD differs from the average BMD of their sex, age and ethnicity.



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