urfer-boun...@nmr.mgh.harvard.edu] on behalf of Lars M. Rimol
[lari...@gmail.com]
Sent: Friday, October 21, 2016 8:19 AM
To: FS maling list
Subject: [Freesurfer] tracula reinit
Hi,
Rerunning the tractography using reinit, is it an absolute requirement to
specify number of control points? It doesn't
Hi Anastasia!
That makes sense, thank you! So the question is how do I evaluate the
noisiness of a path?
1) Most of my isosurfaces look a lot noisier than your example on the wiki.
There's obviously no hard and fast rule here but is there any way to gauge
the noisiness of a reconstructed pat
Hi,
Rerunning the tractography using reinit, is it an absolute requirement to
specify number of control points? It doesn't seem like I can just set
reinit = 1 and let the number of control points be the default.
Also, is there a trade-off in terms of number of control points? For
instance, when re
Hi Peggy - It's trying out all the paths from all the atlas subjects for
candidates to use to initialize the path in your subject. If it's having
such a hard time finding a good candidate, I suspect that something went
wrong earlier in the pre-processing, something like a serious registration
Hi,
I'm using freesurfer-Darwin-lion-stable-pub-v5.3.0 and the latest version
of tracula (downloaded Sept 2014). I was running 'trac-all -prior -c
mydmrircfile.txt' with reinit=1 on a few tracts that initially
reconstructed to look like single voxels. The log file indicated there was
difficulty co
Hi Lars - A path with fewer control points will generally be smoother. So
if the tract is pretty much a straight line, you might get a noisier
result if you increase the number of control points. But if the tract is
more convoluted than a straight line, then you need more control points to
def
Hi,
The various tracts have different default numbers of control points, with a
higher number for more curved paths. In a previous mail Dr. Yendiki
recommended changing the number of control points if several attempts
rerunning reinit don't produce a satisfactory result. Is it always better
to hav
