Background: Meningioma is the most common primary intracranial tumor, divided into three grades and 15 subtypes. MRI and one of its advanced techniques, DTI, have been proven helpful in patient management. The aim of this study was to find the characteristics of FA and MD values in DTI and their association with intracranial meningioma subtypes. Method: In this retrospective study, the researcher examined the medical records of surgically treated intracranial meningioma patients at Dr. Soetomo Hospital, dated January 2020 to December 2022. Intratumoral and peritumoral FA and MD values of all subjects were obtained and then statistically analyzed using the Mann-Whitney test. Result: Eighteen subjects were eligible for the study, of whom 15 had grade 1 meningioma (8 transitional, four fibroblastic, one meningothelial, one microcystic, one metaplastic), two had grade 2 meningioma (2 atypical), and one had grade 3 meningioma (anaplastic). Both HGM and fibroblastic meningiomas had significantly higher intratumoral FA compared to other meningiomas (p < 0.05), but no statistically significant difference when compared to each other. Also, no significant differences were found in other FA and MD parameters. Conclusion: Intratumoral FA values were able to differentiate fibroblastic subtype meningioma and high-grade meningioma from other typical meningioma, both of which had significantly higher FA values.

MRI

DTI

meningioma

intracranial

mean diffusivity

MD

fractional anisotropy

FA