Evaluation of the grading efficacy of preoperative MRI for grades Ⅱ and Ⅲ intracranial solitary fibrous tumor

Motivation: Retrospective studyGoal(s): This study analyzed the general clinical features and preoperative MRI features of patients with Grade Ⅱ and Ⅲ intracranial solitary fibrous tumor (ISFT). Approach: Intergroup comparison was conducted according to postoperative pathological grade. Binary logistic regression was performed to identify effective imaging indexes that could predict pathological grade. Results: There were differences between grades in tumor location; skull invasion; signal characteristics of T2-FLAIR and DWI images; and ADCmax, ADCmean and ADCmin. ADCmin was the only effective imaging index that could predict pathological grade. Impact: Retrospective analysis showed that preoperative ADCmin can effectively predict grade Ⅱ and Ⅲ tumors in patients with ISFT, which will provide an important reference basis for preoperative grading of ISFT.