https://discovery.ucl.ac.uk/1526591/1.hassmallThumbnailVersion/Shmueli_Fairney_2015_SAS%20Symmetric%20Analysis%20of%20Z-Spectra%2C%20a%20Method%20to%20Evaluate%20B0%20Correction%20Techniques%20for%20CEST%20Data%20in%20Clinical%20Systems%20Using%20Non-Exchanging%20Phantoms_Proc_ISM-1.pdf