Quantitative backscattered images depicting cortical dimensions and trabecular network (a, b) and BMDD histograms of cancellous (c, d) and cortical (e, f) bone from transiliac biopsy samples of patients 3 (left) and 5 (right). BMDD results of cancellous and cortical bone are compared with reference BMDD from healthy children (gray band) (26). The corresponding parameters are given in Table 2. Ca, calcium; ref, reference; SD, standard deviation.