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Susceptibility-induced changes in signal intensity from spin-echo versus gradient-echo sequences
Hidemasa Uematsu1, Tetsuya Matsuda, Masaya Takahashi
1Department of Radiology, Fukui Medical University, Fukui, Japan. uematsu@oasis.rad.upenn.edu
Clinical Imaging
|November 13, 2002
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.