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Related Experiment Videos

The Tromsø Study: artifacts in forearm bone densitometry--prevalence and effect.

G K Berntsen1, A Tollan, J H Magnus

  • 1Institute of Community Medicine, University of Tromsø, 9037 Tromsø, Norway.

Osteoporosis International : a Journal Established As Result of Cooperation Between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA
|December 11, 1999
PubMed
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Artifacts in forearm bone densitometry are common, impacting bone mineral density (BMD) measurements. These errors, often due to patient movement, significantly affect osteoporosis diagnosis and patient management.

Area of Science:

  • Orthopedics
  • Radiology
  • Gerontology

Background:

  • Suboptimal performance in bone densitometry can lead to artifacts affecting patient management and research.
  • The prevalence and impact of these artifacts in densitometry are not well understood.

Purpose of the Study:

  • To investigate the prevalence and effects of artifacts in forearm bone densitometry using single X-ray Absorptiometry (SXA).

Main Methods:

  • A cross-sectional, population-based study analyzed forearm SXA scans from the Tromso health study (n=7948).
  • Scans were reviewed for artifacts, and their impact on bone mineral density (BMD) was assessed through reanalysis.

Main Results:

  • Fourteen percent of subjects exhibited movement artifacts.

Related Experiment Videos

  • Artifacts doubled individual BMD variation (0.94% vs. 0.58%).
  • Inaccurate radial endplate detection (74% of scans) led to a 3.8% BMD decrease and a 10% increase in osteoporosis prevalence upon reanalysis.

    • Conclusions:

    • Artifacts are common in forearm bone densitometry and have clinically relevant effects.
    • Characterizing artifacts is crucial for accurate BMD assessment and osteoporosis diagnosis.
    • Further research is needed to understand artifact prevalence in other densitometry settings.