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The Image Integral Uniformity Values. The Image Integral Uniformity (IU) was calculated for each patient image obtained with and without local RF shimming. A significant reduction in inhomogeneity is noticed when local RF shimming is employed (23.7 ± 11.8 vs. 16.7 ± 6.9). This reduction is statistically significant (p = 0.013; paired Student’s t-test) and highlights the beneficial effects of local RF shimming on image signal homogeneity.
