Hi, No problem - thanks for coming back to me.
Imaging was carried out with a GE Excite II 3-T scanner using an eight- channel phased array coil. We acquired coronal 3D-T1 weighted fast spoiled gradient echo (FSPGR) (0.94 × 0.94 × 1.1 mm) which is what I am plugging into Freesurfer. There is actual data present - changing the windowing settings (brightness and contrast) at the front it is possible to make out both grey and white matter. It is at a low intensity compared with the rest of the brain. The data was acquired some time ago, and I am not sure what the source of drop off is. Thanks for your advice in advance. Thanks. M On Mon, Jan 23, 2012 at 11:07 PM, Bruce Fischl <fis...@nmr.mgh.harvard.edu>wrote: > Hi Mahinda, > > sorry, I meant to respond to this. It's hard to tell from the image - is > there actually data in the frontal regions? What is the source of the > drop-off? Is it a slab selective acquisition and is anterior/posterior the > slab direction? > > cheers > Bruce > > > > On Mon, 23 Jan 2012, Mahinda Yogarajah wrote: > > Dear Experts, >> >> Sorry if this is a repost, but I was not sure it got posted. >> >> I have a few subjects that I want to salvage and use where there appears >> to >> be significant signal inhomogeniety in the last few frontal slices (see >> T1.mgz in attached figure 1). Despite the use of control points (placed >> with careful adjustments of windowing parameters), I still can't encompass >> all of the the gyri right at the front (see brainmask.mgz coronal slice in >> figure 2). I would really appreciate some advice on how to proceed from >> here. Is placing white matter voxels in wm.mgz a possible solution ? Or >> is >> there another solution ? >> >> Thanks. >> >> M >> >> > > 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<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. >
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