Parameter Optimization for Quantitative Signal-Concentration Mapping Using Spoiled Gradient Echo MRI

Table 1

Calculated baseline 𝑇1 and 𝑇2 and relaxivities 𝑅1 and 𝑅2. Values calculated as described in Section 2, and compared to estimates from Su et al. [10]. There is excellent agreement between our results and those of Su et al., suggesting a linear relationship between relaxivity and gadolinium concentration.

𝑇 (ms)	𝑅(ms^−1 mM^−1)	𝑅^∗(ms^−1 mM^−1)
𝑇10 = 1480	𝑅1 = 0.0055	𝑅1 = 0.0053
𝑇20 = 195	𝑅2 = 0.0069	𝑅2 = 0.0068