Yuquan Hosipital Tsinghua University Beijing 100040 China;
Clinical Centre of Nis Nis 18000 The Republic of Serbia;
Yuquan Hosipital Tsinghua University Beijing 100040 China;
Yuquan Hosipital Tsinghua University Beijing 100040 China;
Yuquan Hosipital Tsinghua University Beijing 100040 ChinaSchool of Medicine Tsinghua University Beijing 100084 China;
pediatric brain tumors; cognitive function; neuroimaging; f MRI; DTI;