I'm trying to correct a DTI dataset for signal drift and Gibb's ringing effect. I have a few questions about the pipeline:
1. I'm doing the corrections in the following order: a) Correct for Signal Drift b) Correct for Gibb's ringing effect c) Estimate the DTI .mat file d) Motion and EPI distortion correction. Is this order the correct order?
2) My dataset includes 10 b0 images at the beginning followed by 30 b1000 images. I know for signal drift correction it is better to have b0 acquisitions in the middle of the DWI acquisition, but we haven't acquired the data like that. So, I was wondering whether I can still correct my dataset for signal drift with this acquisition method.
3) For Gibb's ringing effect correction, I keep the default values for lambda, # of iterations and step size (100, 100 and 0.01, respectively). Do I have to somehow calculate these parameters and use specific values for my data?