BMD measurements from different machines are not comparable without _________

BMD measurements from different machines are not comparable without _________

• A. Standardization
• B. Calibration
• C. Harmonization
• D. Quality Control

Answer: (A)

Comparability of BMD across different scanners rests on standardization. Different DXA machines can use varying software algorithms, ROI definitions, scan parameters, and calibration approaches, which can create systematic differences in the results even for the same bone. Standardization provides uniform scanning protocols, ROI criteria, reference data, and reporting units across devices, so measurements reflect the same property in the same way. This makes values from different machines truly comparable. While calibration ensures each device is accurate and quality control keeps performance consistent, and harmonization seeks to align outputs across platforms, standardization is what enables cross-device comparability in the first place.

Comparability of BMD across different scanners rests on standardization. Different DXA machines can use varying software algorithms, ROI definitions, scan parameters, and calibration approaches, which can create systematic differences in the results even for the same bone. Standardization provides uniform scanning protocols, ROI criteria, reference data, and reporting units across devices, so measurements reflect the same property in the same way. This makes values from different machines truly comparable. While calibration ensures each device is accurate and quality control keeps performance consistent, and harmonization seeks to align outputs across platforms, standardization is what enables cross-device comparability in the first place.