deletions | additions       diff --git a/Assumption_is_made_that_the__.md b/Assumption_is_made_that_the__.md  index 8c65ecb..e4fb726 100644  --- a/Assumption_is_made_that_the__.md  +++ b/Assumption_is_made_that_the__.md 
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* Assumption is made that the major contribution contributions  to the boundary variability are the contrast differences and gradient distortions, but it was shows shown  (see Tardif 2010 "Regional Impact of Field Strength on Voxel-Based Morphometry Results" and Tardif 2009 "Sensitivity of voxel-based morphometry analysis to choice of imaging protocol at 3 T"), that different protocols and field strengths significantly affect signal and contrast inhomogeneity patterns: patterns,  which leads to differences in regional accuracy of tissue classification due to different contrast to noise ratio.