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Measurement reproducibility of magnetic resonance imaging-based finite element analysis of proximal femur microarchitecture for in vivo assessment of bone strength

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Abstract

Introduction

Osteoporosis is a disease of weak bone. Our goal was to determine the measurement reproducibility of magnetic resonance assessment of proximal femur strength.

Methods

This study had institutional review board approval, and written informed consent was obtained from all subjects. We obtained images of proximal femur microarchitecture by scanning 12 subjects three times within 1 week at 3T using a high-resolution 3-D FLASH sequence. We applied finite element analysis to compute proximal femur stiffness and femoral neck elastic modulus.

Results

Within-day and between-day root-mean-square coefficients of variation and intraclass correlation coefficients ranged from 3.5 to 6.6 % and 0.96 to 0.98, respectively.

Conclusion

The measurement reproducibility of magnetic resonance assessment of proximal femur strength is suitable for clinical studies of disease progression or treatment response related to osteoporosis bone-strengthening interventions.

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Acknowledgments

This study was supported by United States National Institutes of Health K23 AR059748 (G.C.), RO1 AR066008 (G.C.), and K25 AR060283 (C.R.).

Conflict of interest

The authors declare that they have no conflicts of interest.

Ethical standards

This study had institutional review board approval and written informed consent was obtained from all subjects. Specifically, it was performed in accordance with the ethical standards laid down in the 1964 Declaration of Helsinki and its later amendments. All data were de-identified and this manuscript does not contain patient data.

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Correspondence to Gregory Chang.

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Chang, G., Hotca-Cho, A., Rusinek, H. et al. Measurement reproducibility of magnetic resonance imaging-based finite element analysis of proximal femur microarchitecture for in vivo assessment of bone strength. Magn Reson Mater Phy 28, 407–412 (2015). https://doi.org/10.1007/s10334-014-0475-y

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  • DOI: https://doi.org/10.1007/s10334-014-0475-y

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