The tumour grading is of great importance in predicting the biological behaviour of the tumours and offers important guidance for prediction of prognosis and the selection of clinical interventions. For these reasons, with dynamic susceptibility contrast enhanced perfusion weighted imaging (DSC) as reference standards, we retrospectively appraised the diagnostic efficacy of perfusion-related parameters of multiple b values diffusion weighted image (DWI) compared to appraise normalized lesion/normal tissue relative cerebral blood flow (nrCBF)in the prediction of neuroepithelial tumors grading. 62 patients with pathologically proved neuroepithelial tumors underwent conventional magnetic resonance sequences, multiple b values DWI, DSC. The group differences were not significant for these perfusion-related parameters of mono-exponential and biexponential model of multiple b values DWI.
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