Analysis of invasiveness of meningiomas by diffusion tensor imaging
YAN Yi
TANG Wenyuan
DENG Zhaoxia
XIE Bing
L(U) Fajin
LIU Bin
Abstract：Objective To observe invasiveness of various meningiomas by diffuse tensor imaging(DTI).Methods Twenty-two patients with histologically confirmed meningiomas,including 16 benign meningiomas and 6 atypical ones,were included in this study.Patients were classified into different subgroups according to the established standards of invasion.Correlative analysis was done between vafioius invasive potential and pathological diagnosis.Comparing the conventional MRI and DTI sequences,five regions of interest(ROI)--tumor,peritumoral edema region,outer region of edema,white matter region and contralateral white matter region-were drawn from tumor and white matter at various distance from tumor.FA values were calculated in every region.Comparative analysis of FA in different regions was done.Results Significant correlation between degree of brain invasion and pathological type of meningiomas was found in this study.But neither dura invasion nor skull invasion was correlated with histological diagnosis.FA values of peritumoral edema region of meningiomas with brain invasion were significantly different from those of meningiomas without brain invasion.In tumor area,FA values of brain invasive group were significantly less than those of non-invasion group.No significant difference of all parameters was found among other groups.Conclusion According to imaging quantitive analysis,brain invasiveness of atypical meningiomas is stronger than that of benign meningiomas.However,differences of dura invasion and skull invasion are not significant between these two groups.
Keywords：MeningiomasDiffusion tensor imagingMagnetic resonance imaging
Publication Date：2009-01-01
Online Publishing Date：2026-09-14(First online date of this platform, not the publication date of the document)
Pages：3( 18-20 )