Noninvasive assessment of response to neoadjuvant chemotherapy in osteosarcoma of long bones with diffusion-weighted imaging: an initial in vivo study. oleh Cheng-Sheng Wang, Lian-Jun Du, Ming-Jue Si, Qi-Hua Yin, Liang Chen, Min Shu, Fei Yuan, Xiao-Chun Fei, Xiao-Yi Ding