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 (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 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), and would like to correct my T1 maps >>> accordingly. Looking at the online help of mri_ms_fitparms, I think the >>> parameter -afi should do the trick. However, I'm not sure about the >>> properties of the flip angle map that I need to supply to mri_ms_fitparms. >>> Does that programme expect absolute flip angle values? Or can I feed in my >>> two AFI FLASH volumes in some way? >>> If anyone can point me in the right direction, that would be great! >>> Thanks for you help, >>> Johannes >>> _______________________________________________ >>> Freesurfer mailing list >>> Freesurfer@nmr.mgh.harvard.edu >>> https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer >>> >>> >>> >> >> >> The information in this e-mail is intended only for the person to whom it is >> addressed. If you believe this e-mail was sent to you in error and the e-mail >> contains patient information, please contact the Partners Compliance >> HelpLine at >> http://www.partners.org/complianceline . If the e-mail was sent to you in >> error >> but does not contain patient information, please contact the sender and >> properly >> dispose of the e-mail. >> > > > > _______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
