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- W4240178305 abstract "Relaxivity is a very important indicator to evaluate the signal enhancement caused by MRI contrast agents. Many factors can affect the relaxivity values. The aim of this study is to investigate the influence of factor TE in the curve-fitting equation for T 1 measurements. A spin echo pulse sequence was used as the scanning method. The relaxivity of Gd -DTPA doped saline at a 1.5 T MR scanner was under investigation. Gd -DTPA is the most widely used MRI contrast agent nowadays. In this study, both computer simulations and phantom studies were performed. T 1 values were calculated by using both spin echo MR signal equations: one with the TE factor included and the other with the TE factor omitted. Then, the relaxivity values obtained from these two sets of T 1 values would be compiled and compared. The results show that the T 1 values are longer and the relaxivity is smaller when the factor TE is omitted from the curve-fitting equation. Therefore, it is more desirable to keep the factor TE in the curve-fitting equation to obtain more accurate relaxivity values." @default.
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- W4240178305 date "2008-10-01" @default.
- W4240178305 modified "2023-09-27" @default.
- W4240178305 title "THE IMPACT OF FACTOR TE ON THE MEASUREMENT OF T1 RELAXIVITY" @default.
- W4240178305 doi "https://doi.org/10.4015/s1016237208000891" @default.
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