3D Trabecular Bone Volume Fraction Measurements of the Calcaneus for 80 Healthy Female Volunteers Using a Compact MRI System

Hiroki Kondo¹, Daiki Tamada¹, Yasuhiko Terada¹, Katsumi Kose¹

2D and 3D distribution of the TBVF in the calcaneus were measured for 80 healthy female subjects using a compact MRI system to confirm the validity of the use of a circular ROI (diameter = 20~25 mm) for quantitative ultrasound. We found high correlation (r = 0.78) between TBVF averaged over the 2D and 3D segmented volume, and very high correlation (r = 0.967) between TBVF averaged over the central circular ROI (diameter = 20 mm) and 2D segmented volume. Our results strongly support the validity of the use of the circular ROI for QUS for evaluation of the calcaneus.