Figure 3From: A new anisotropy index on trabecular bone radiographic images using the fast Fourier transformVertebral fracture case a Region of Interest (ROI) of the digitized radiographic image of calcaneus trabecular bone. b FFT spectrum DLI : Dispersion Longitudinal Index, spreading angle of the longitudinal trabeculae DTI : Dispersion Transverse Index, spreading angle of the transverse trabeculaeBack to article page