What is one common factor that can lead to inaccuracies in DXA measurements?

• A. Patient weight
• B. Scan mode
• C. Bone age
• D. Patient history

Answer: (B)

In the context of DXA (dual-energy X-ray absorptiometry) measurements, the choice of scan mode is crucial for obtaining accurate results. Different scan modes can affect the quality and precision of the data collected during the assessment of bone mineral density. For example, certain scan modes may prioritize speed over accuracy, potentially leading to suboptimal imaging or less precise measurements. Factors such as the settings used during the DXA scan, the specific area being assessed, and how the scan is executed can all influence the outcomes.

While factors like patient weight and bone age indeed play roles in interpreting DXA results, they are not as directly related to the accuracy of the measurements as the scan mode is. Patient history can provide context but does not inherently affect the measurement process itself. Thus, understanding the implications of scan mode is vital for ensuring reliable DXA assessments.