Pretreatment diffusion-weighted imaging for prediction of relapsed and refractory primary central nervous system lymphoma oleh Hsi-Cheng Chien, Lee-Ren Yeh, Lee-Ren Yeh, Lee-Ren Yeh, Kuo-Chuan Hung, Kuo-Chuan Hung, Sher-Wei Lim, Sher-Wei Lim, Chung-Yu Cheng, Yu-Chang Lee, Jeon-Hor Chen, Jeon-Hor Chen, Ching-Chung Ko, Ching-Chung Ko