Department of Radiology;
The Second Hospital of Dalian Medical University;
Dalian;
Liaoning Province;
China;
Department of Pediatrics;
The Second Hospital of Dalian Medical University;
Dalian;
Liaoning Province;
China;
bone marrow-derived mesenchymal stem cells; cell apoptosis; diffusion coefficient; cell labeling; intraventricular injection; intravoxel incoherent motion; magnetic guidance; perfusion fraction; superparamagnetic nanoparticles;