Assessment of Calcaneal Spongy Bone Magnetic Resonance Characteristics in 
Women: A Comparison between Measures Obtained at 0.3 T, 1.5 T, and 3.0 T

Capuani, S; Maiura, A; Giampà, E; Montuori, M; Varrucciu, V; Hagberg, GE; Vinicola, V; Colonna, S

doi:10.3390/diagnostics14101050

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Assessment of Calcaneal Spongy Bone Magnetic Resonance Characteristics in Women: A Comparison between Measures Obtained at 0.3 T, 1.5 T, and 3.0 T

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Hagberg, GE
Institutional Guests, Max Planck Institute for Biological Cybernetics, Max Planck Society;

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引用

Capuani, S., Maiura, A., Giampà, E., Montuori, M., Varrucciu, V., Hagberg, G., Vinicola, V., & Colonna, S. (2024). Assessment of Calcaneal Spongy Bone Magnetic Resonance Characteristics in Women: A Comparison between Measures Obtained at 0.3 T, 1.5 T, and 3.0 T. Diagnostics, 14(10):. doi:10.3390/diagnostics14101050.

引用: https://hdl.handle.net/21.11116/0000-000F-5FA6-C

要旨

Background: There is a growing interest in bone tissue MRI and an even greater interest in using low-cost MR scanners. However, the characteristics of bone MRI remain to be fully defined, especially at low field strength. This study aimed to characterize the signal-to-noise ratio (SNR), T2, and T2* in spongy bone at 0.3 T, 1.5 T, and 3.0 T. Furthermore, relaxation times were characterized as a function of bone-marrow lipid/water ratio content and trabecular bone density.
Methods: Thirty-two women in total underwent an MR-imaging investigation of the calcaneus at 0.3 T, 1.5 T, and 3.0 T. MR-spectroscopy was performed at 3.0 T to assess the fat/water ratio. SNR, T2, and T2* were quantified in distinct calcaneal regions (ST, TC, and CC). ANOVA and Pearson correlation statistics were used.
Results: SNR increase depends on the magnetic field strength, acquisition sequence, and calcaneal location. T2* was different at 3.0 T and 1.5 T in ST, TC, and CC. Relaxation times decrease as much as the magnetic field strength increases. The significant linear correlation between relaxation times and fat/water found in healthy young is lost in osteoporotic subjects.
Conclusion: The results have implications for the possible use of relaxation vs. lipid/water marrow content for bone quality assessment and the development of quantitative MRI diagnostics at low field strength.