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- W2373452593 abstract "Objective To quantitatively evaluate the diffusion changes of high-grade astrocytoma(grades Ⅲ～Ⅳ) and meningioma associated with peritumoral edema using magnetic resonance diffusion tensor imaging(DTI),and to compare the differences between them.Methods DTI was performed for 15 cases with high-grade astrocytoma and 16 cases with meningioma proven pathologically.Average diffusion coefficient(DCavg) values and fractional anisotropy(FA) values of peritumoral edema and the contralateral normal brain white matter were measured on DCavg and FA imagings of each patient.Compared the DCavg and FA values of peritumoral edema with contralateral normal brain white matter.Compared the DCavg and FA values of peritumoral edema in astrocytoma with meningioma.Results In astrocytoma and meningioma,the DCavg and FA values of peritumoral edema were significantly higher and lower than those of contralateral normal brain white matter in both of them,respectively.The FA values of peritumoral edema in patients with high-grade astrocytomas were significantly lower than those in patients with meningiomas.The decreased degree of the FA values of peritumoral edema between patients with high-grade astrocytomas and contralateral normal brain white matter was more severe than that of patients with benign meningioma.Conclusion Diffusion tensor imaging can evaluate quantitatively diffusion changes and differences of peritumal edema,which is a new method for clinical functional study of high-grade astrocytoma(grades Ⅲ～Ⅳ) and meningioma,and can reaveal the microcosmic pathological changes and their differences which can not obtained by normal MRI." @default.
- W2373452593 created "2016-06-24" @default.
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- W2373452593 date "2012-01-01" @default.
- W2373452593 modified "2023-09-23" @default.
- W2373452593 title "The characteristics of peritumoral edema caused by high-gade astrocytoma and meningioma on magnetic resonance diffusion tensor imaging" @default.
- W2373452593 hasPublicationYear "2012" @default.
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