What diagnostic test is used to evaluate bone density?

The dual-energy X-ray absorptiometry (DEXA) scan is specifically designed to assess bone density, making it the preferred method for diagnosing conditions like osteoporosis. This test uses low-level X-rays at two different energy levels to measure the amount of mineral content in bones. By comparing the results to standard values, healthcare providers can assess the risk of fractures and determine the overall health of a patient’s bone structure.

Unlike other imaging methods, the DEXA scan provides precise measurements of bone density and is particularly effective for evaluating areas that are most susceptible to fracture, such as the hip and spine. It has a low radiation dose and is quick, often taking only about 10-30 minutes. This makes it a non-invasive and patient-friendly option for monitoring bone health.

Other imaging modalities like CT scans, MRI, and standard X-rays may provide some information about bone conditions, but they do not specifically measure bone density in the same way. For instance, CT scans and MRIs can visualize soft tissue and detailed structures but are not routinely used for assessing bone density. Traditional X-rays can show fractures or physical abnormalities, but they lack the sensitivity required to evaluate bone density accurately. Thus, the DEXA scan is uniquely suited for this purpose,