Re: [Freesurfer] T1 mapping, mri_ms_fitparms and flip angle map

2011-11-21 Thread Bruce Fischl
sure On Mon, 21 Nov 2011, Dr.med. Johannes C. Klein wrote: > Hi Bruce, > Thanks a lot for your (very speedy) help! > Cheers, > Johannes > > Am 21 Nov 2011 um 18:21 schrieb Bruce Fischl: > >> Hi Johannes >> >> you should give it a flip angle map in degrees. We assume that the nominal >> flip angle

Re: [Freesurfer] T1 mapping, mri_ms_fitparms and flip angle map

2011-11-21 Thread Dr.med. Johannes C. Klein
Hi Bruce, Thanks a lot for your (very speedy) help! Cheers, Johannes Am 21 Nov 2011 um 18:21 schrieb Bruce Fischl: > Hi Johannes > > you should give it a flip angle map in degrees. We assume that the nominal > flip angle (that is, if B1 was homogeneous) would be 60 deg. > > cheers > Bruce > >

Re: [Freesurfer] T1 mapping, mri_ms_fitparms and flip angle map

2011-11-21 Thread Bruce Fischl
Hi Johannes you should give it a flip angle map in degrees. We assume that the nominal flip angle (that is, if B1 was homogeneous) would be 60 deg. cheers Bruce On Mon, 21 Nov 2011, Dr.med. Johannes C. Klein wrote: > Dear all, > For a structural study, I would like to determine cortical T1 val

[Freesurfer] T1 mapping, mri_ms_fitparms and flip angle map

2011-11-21 Thread Dr.med. Johannes C. Klein
Dear all, For a structural study, I would like to determine cortical T1 values. T1 map generation from two FLASH images works like a charm, and I would like to add B1 correction now. I have acquired flip angle maps for my subjects (using the Yarnykh method with interleaved FLASH and two TRs), a