Re: [Freesurfer] questions regarding bias correction prior to Freesurfer processing

2018-07-09 Thread Bruce Fischl
Hi Stacey we recommend processing all of your subjects the same way. Do you understand why some would have a big bias field and some would not? It was always the same coil, wasn't it? cheers Bruce On Mon, 9 Jul 2018, STACEY M SCHAEFER wrote: External Email - Use Caution

[Freesurfer] questions regarding bias correction prior to Freesurfer processing

2018-07-09 Thread STACEY M SCHAEFER
External Email - Use Caution Hello Freesurfer experts, Our current 3T T1s exhibit structural hyperintensities due to the inhomogeneity of the receiver coil, but not all scans have hyperintensity issues. The local MRI physicist suggests running N4BiasFieldCorrection through mul