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Are you sure you are applying the fieldmap correction correctly? Do the images look more distorted after the correction? T On 12 Dec 2007, at 20:51, Megan Herting wrote: > Hi- > > I am currently processing some DTI data, and I am finding that when > I skip > field map correction via fugue, my FA vales are a lot larger (.78 vs. > 1.00) in some regions of the brain, although not consistently. This > increase in FA value is more tons In addition, the DTI images do > not look > distorted when fugue is not used. Has anyone had a similar experience? > Anyone have a suggestion on if I should or should not field map > correct my > data before running programs like TBSS? > > I'm not sure if it matters but we are using a 3T Siemens scanner > for data > acquisition. > > Any suggestions would be appreciated. Thanks! > > > -Megan >