what is the bandwidth? The typical way to fix it is to increase the
bandwidth. You can probably recover some of the SNR you will lose by
reducing your flip angle, which is pretty far from the Ernst angle.
Also, minimize your TE (if 4ms is not already the min)
cheers
Bruce
On Tue, 13 Nov 2012,
I'm not engaged in obtaining images, so I don't have any details about the
images.
I wonder the method which you commented can be applied to images I already
earned.
If it's not, is there any way to recover SNR after image scanning?
Thanks,
Youngmin Huh.
2012/11/13 Bruce Fischl
it's not a question of SNR, the problem appears to me to be that the B0
distortions are so bad that a bunch of the temporal lobe is piled up on top
of itself. There's no way to fix that posthoc. If you upload the full
volume I'm happy to take a look
On Wed, 14 Nov 2012, youngmin huh wrote:
Hi,
3D SPGR sequences were used. (TR=22, TE=4, thickness=1.4, FOV=240*240,
FA=40)
If the artifacts are due to B0 distortion, I wonder how I can fix it.
Thanks,
Youngmin Huh
2012/11/12 Bruce Fischl fis...@nmr.mgh.harvard.edu
Can you give us the acquisition details? I suspect this is not
acquisition and noise problem.
Hi,
3D SPGR sequences were used. (TR=22, TE=4, thickness=1.4, FOV=240*240,
FA=40)
If the artifacts are due to B0 distortion, I wonder how I can fix it.
Thanks,
Youngmin Huh
2012/11/12 Bruce Fischl fis...@nmr.mgh.harvard.edu
Can you give us the acquisition details? I
