Author/Authors :
Hidemasa Uematsu، نويسنده , , Tetsuya Matsuda، نويسنده , , Masaya Takahashi، نويسنده , , Hiroshi Inoue، نويسنده , , Koji Hayashi، نويسنده , , Hiroki Yamada، نويسنده , , Yoshiharu Yonekura، نويسنده , , Harumi Itoh، نويسنده ,
Abstract :
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.
Keywords :
Spin echo , susceptibility , contrast agent , Hypervascular tumor , Gradient echo
