p.s. what we do is not really bias field estimation/correction, but something much more aggressive, really a pre-segmentation, which accounts for bias fields as well as tissue inhomogeneity. If what you want is really the bias field for some other purpose, you're probably better of using the EM stuff from the FSL (unless you can measure it directly with your scanner, which is the best solution!).
Bruce On Thu, 29 Aug 2002, Stephen Smith wrote: > > Hi - no, it doesn't - that is part of the initial freesurfer processing > (which estimates white matter and then estimates bias field on the basis > of white matter points), not the format conversion. > > ttfn, Steve. > > On Thu, 29 Aug 2002, Darren Weber wrote: > > > > > Dear Bruce et al, > > > > does mri_convert automatically apply RF bias field estimation/correction? > > If it can do the RF bias correction, what is the best command line option > > for this? > > > > Take care, Darren > > > > > > -- > > Darren Weber, PhD Student > > Cognitive Neuroscience, School of Psychology > > Flinders University of SA, GPO Box 2100, Adelaide, SA 5001, Aust. > > Ph: (61 8) 8201 3889, Fax: (61 8) 8201 3877 > > http://203.3.164.46/~dlw/homepages/index.html > > > > > > > > Stephen M. Smith > Head of Image Analysis, FMRIB > > Oxford University Centre for Functional MRI of the Brain > John Radcliffe Hospital, Headington, Oxford OX3 9DU, UK > +44 (0) 1865 222726 (fax 222717) > > [EMAIL PROTECTED] http://www.fmrib.ox.ac.uk/~steve >
