Susceptibility-induced changes in signal intensity from spin-echo versus gradient-echo sequences
- 作者：Uematsu ; Hidemasa ; Matsuda ; Tetsuya ; Takahashi ; Masaya ; Inoue ; Hiroshi ; Hayashi ; Koji ; Yamada ; Hiroki ; et. al.
- 关键词：Spin echo ; Gradient echo ; Susceptibility ; Contrast agent ; Hypervascular tumor
- 刊名：Clinical Imaging
- 出版年：2002
- 期刊代码：58_08997071
- 类别：med
- 出版时间：November - December, 2002
- 卷：26
- 期：6
- 页码：367-370
- 文件大小：108 K
摘要
This manuscript describes a study of the evaluation of T2 and T2* changes in a hypervascular tumor model (hemodialyzer phantom) under conditions simulating dynamic perfusion study. The measured 1/T2* was strongly dependent on the compartmentalization of contrast material within the model, whereas the observed 1/T2 was not. Gradient-echo magnetic resonance (MR) imaging may be more suitable than a spin-echo MR imaging for the evaluation of tumor vascularity.