Susceptibility-induced changes in signal intensity from spin-echo versus gradient-echo sequences.
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.
Uematsu
Hidemasa
H
Department of Radiology, Fukui Medical University, Fukui, Japan. uematsu@oasis.rad.upenn.edu
Matsuda
Tetsuya
T
Takahashi
Masaya
M
Inoue
Hiroshi
H
Hayashi
Koji
K
Yamada
Hiroki
H
Yonekura
Yoshiharu
Y
Itoh
Harumi
H
D003287:Contrast Media; D019786:Gadolinium DTPA; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods*; D009369:Neoplasms / Q000098:blood supply; D006435:Renal Dialysis / Q000295:instrumentation
D003287:Contrast Media; D019786:Gadolinium DTPA