Fig. 9

3D proximal femur was segmented by the thresholding process in CAD software in each of the CT-based and MRI-based radiographic files. Outlining the extent of the tumor and its tumor volume created for the 3D bone tumor model base on CT and MRI files as shown in the following Figs. a, b. CT and MRI images data were fused to construct 3D models of the respective tumor regions as shown in Fig. c. CAD; Computer-aided design