[1
]
Department of Biomedical Engineering, Fourth Military Medical University, Xi'an, Shaanxi,
P.R. China.
[2
]
Department of Radiology, Tangdu Hospital, Fourth Military Medical University, Xi'an,
Shaanxi, P.R. China.
[3
]
Department of Neurosurgery, Tangdu Hospital, Fourth Military Medical University, Xi'an,
Shaanxi, P.R. China.
[4
]
Departments of Radiology, Computer Science and Biomedical Engineering, State University
of New York, Stony Brook, New York, USA.