Optical coherence tomography application for assessing variation in bone mineral content: a preclinical study.

Area of Science:

• Biomedical Engineering
• Ophthalmology
• Materials Science

Background:

• Optical Coherence Tomography (OCT) is a non-invasive imaging modality capable of producing cross-sectional and 3D reconstructions of biological tissues.
• Assessing bone density and composition non-invasively is crucial for diagnosing and managing skeletal diseases.

Purpose of the Study:

• To evaluate the efficacy of OCT in distinguishing between bone tissues of varying densities and compositions.
• To measure light penetration depth in porcine and rat bone samples to assess bone mineral content.

Main Methods:

• Porcine and rat bone samples were subjected to OCT imaging.
• Light penetration depth was measured using Image J software and Scattering Attenuation Microscopy.
• Bone samples were analyzed in both mineralized and demineralized states.

Main Results:

• Significant differences in light penetration depth were observed between mineralized and demineralized bone (p<0.001).
• Variations in light penetration depth were noted across different anatomical sites (p<0.001).
• OCT detected differences in bone mineral and porosity among genders (p<0.0001).

Conclusions:

• OCT is a valuable technique for estimating local variations in bone mineral content.
• The findings support OCT's potential for non-invasive bone characterization.