MRI sequence information and bias correction

Hi
1.could I found sequence parameters of MRI?
2. how can enhance signal uniformity, which filter and how it works?

thanks

  1. the dicom module has a button to display the metadata (dicom header) for any instances.
  2. https://www.slicer.org/wiki/Documentation/4.10/Modules/N4ITKBiasFieldCorrection