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Figure 4 Agreement between area of hyperenhancement (mean value of the differences = closed line; ± 2 SD = dotted lines) from gadophrin-3 and gadophrin-3 plus Magnevist enhanced T1-weighted images depicted in a Bland and Altman graph. Average value of the two measurements is plotted along the x-axis; the difference (gadophrin-3 minus gadophrin-3 plus Magnevist) is plotted along the y-axis.