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Objective To detect the correlation of the expression of microvessel density(MVD)and vascular endothelial growth factor(VEGF)with the semi-quantivative indices of susceptibility weighted imaging(SWI)and perfusion imaging(PI)in astrocytic tumor.Methods SWI and PI were performed in 98 patients with varing grades of astrocytic tumors.According to the World Health Organization(WHO)classification of central nervous system tumors and grading criteria:8 cases of pilocytic astrocytoma(gradeⅠ,1
Objective To detect the correlation of the expression of microvessel density (MVD) and vascular endothelial growth factor (VEGF) with the semi-quantized indices of susceptibility weighted imaging (SWI) and perfusion imaging (PI) in astrocytic tumor. Methods SWI and PI were performed in 98 patients with varing grades of astrocytic tumors. According to the World Health Organization (WHO) classification of central nervous system tumors and grading criteria: 8 cases of pilocytic astrocytoma (grade I, 1