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Abstract #1151

Relationship Analysis of Axial and Radial Diffusivities May Be Helpful in Discriminating Tumor-Infiltrating Edema from Pure Vasogenic Edema

Zhigang Min1, 2, Chen Niu1, Ming Zhang1

1Radiology, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China; 2Radiology, Yi'xing Hospital Affiliated to Jiangsu University, Yi'xing, Jiangsu, China

Due to the infiltration of tumor cells, the axons and myelin were destroyed. tumor-infiltrating edema has greater radial diffusivities than pure vasogenic edema. But the direct comparisons of ˡ will be influenced by the degree of edema and can not reveal the diffusion characteristics induced by damaged axons and myelin. We compared the relationships of ˡ and ˡ in pure vasogenic edema and tumor-infiltrating edema and found the significant different between the two types of edema. RCˡ-ˡ showed more effective than other metrics in discriminating tumor-infiltrated edema from pure vasogenic edema.