Hiroki Kondo1, Daiki Tamada1, Yasuhiko Terada1, Katsumi Kose1
1Institute of Applied Physics, University of Tsukuba, Tsukuba, Ibaraki, Japan
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.