期刊
RADIOLOGY
卷 214, 期 3, 页码 912-917出版社
RADIOLOGICAL SOC NORTH AMER
DOI: 10.1148/radiology.214.3.r00mr15912
关键词
brain, MR; brain, neoplasms; magnetic resonance (MR), diffusion study; magnetic resonance (MR), perfusion study; magnetic resonance (MR), tissue characterization; meninges, MR; meninges, neoplasms
Double-echo dynamic magnetic resonance (MR) imaging was used to evaluate both vascularity and permeability of tissues simultaneously. Vascularity was evaluated on the basis of the T2*-shortening effect due to the intravascular fraction of the contrast agent and permeability on the basis of the T1-shortening effect due to the extravascular fraction. Meningioma was characterized on the basis of higher vascularity and neurinoma on the basis of higher permeability. The proposed method enables better tissue characterization.
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