弥散张量成像在脑肿瘤中的应用

目的 探讨脑肿瘤弥散张量成像(DTI)的特点及其在脑肿瘤中的诊断和鉴别诊断价值.方法 对39例经病理证实的脑肿瘤患者(脑膜瘤10例,胶质瘤17例,转移瘤12例),采用PhilipsAchieva 1.5 T磁共振行常规MRI和DTI,在工作站上重建部分各向异性(FA)图、表观弥散系数(ADC)图和三维白质纤维束图,选择...

Application of diffusion tensor imaging in brain tumors

Objective To study the characteristics of diffusion tensor imaging (DTI) in brain tumor and it's diagnosis and differential diagnosis value.Methods Thirty-nine patients with brain tumors proven by pathologically (10 meningioma,17 glioma,12 metastatic tumors) were enrolled,by using Philips Achieva 1.5 T MRI,conventional MRI and DTI were underwent on them,fractional anisotropy (FA) maps,apparent diffusion coefficient (ADC) maps and three dimensional white matter fiber bundle map were reconstructed in the workstation.The core substance of the tumor area and the contralateral mirror area were selected as the region of interest,and FA and ADC values of them were measured,and t test was performed.Results The FA values of meningioma,metastases tumors and gliomas were 0.36 ± 0.08,0.28 ± 0.03,0.18 ± 0.06,respectively,and the differences among them were significant( P ＜ 0.05).The ADC values of meningioma,metastases tumors and gliomas were 1.72 ± 0.10,1.52 ± 0.22,1.34 ± 0.14,respectively,and the differences among them were significant( P ＜ 0.05).Conclusion DTI has high clinical value in identification of meningiomas,metastatic tumors and glioma.