Freesurfer

freesurfer@nmr.mgh.harvard.edu

6 participants
30055 discussions

overlay of multiple *.w files onto the same surface
by Joongnam Yang 27 Jan '05

27 Jan '05

Hi, I know how to overlay a *.w file with a surface. Is it possible to overlay multiple *.w files onto the same surface on TkSurfer? If so, would someone let me know how to do it? Thanks. Nam.

2 1

how to seed points 3
by Wan Park 27 Jan '05

27 Jan '05

Hi, To create the surface, I have to define the corpus callosum and the pons as well. I have been suggested to get a talairach transform first, so I did: (22970 is the subject folder) $ talairach 22970 but I have received this message: wpark% talairach 22970 registering 22970 mri_convert orig orig/orig.mnc reading from orig... TR=0.00, TE=0.00, TI=0.00, flip angle=0.00 i_ras = (-1, 0, 0) j_ras = (0, 0, -1) k_ras = (0, 1, 0) writing to orig/orig.mnc... Can't locate Getopt/Tabular.pm in @INC (@INC contains: /usr/local/mni/lib/mni_autoreg /System/Library/Perl/5.8.1/darwin-thread-multi-2level /System/Library/Perl/5.8.1 /Library/Perl/5.8.1/darwin-thread-multi-2level /Library/Perl/5.8.1 /Library/Perl /Network/Library/Perl/5.8.1/darwin-thread-multi-2level /Network/Library/Perl/5.8.1 /Network/Library/Perl .) at /usr/pubsw/packages/mni/bin/mritotal line 56. BEGIN failed--compilation aborted at /usr/pubsw/packages/mni/bin/mritotal line 56. Error: could not open file "/usr/local/freesurfer_package/freesurfer/subjects/22970/mri/ transforms/talairach.xfm". System message: No such file or directory mri_add_xform_to_header: could not read xform file '/usr/local/freesurfer_package/freesurfer/subjects/22970/mri/ transforms/talairach.xfm' No such file or directory [ogden:freesurfer_package/freesurfer/subjects] wpark% I checked and I have no talairach.xfm under transforms. what should i do? The COR-.info file in mri/wm does not have a line beginning with xform, so I added: xform /usr/local/freesurfer_package/freesurfer/subjects/22970/mri/transforms/ talaraich.xfm and ran the talairach 22970 again, but I received the same message. Thanks!! Wan

2 2

how to seed points 2
by Wan Park 26 Jan '05

26 Jan '05

Hello, Because I had problems finding automatically the corpus callosum cutting plane, I loaded the wm volume, click in the center of the corpus in coronal view, switch to sagittal plane and used the volume RAS coordinates (tailarach coord says "none"). then I ran this line: recon-all -stage2 -cc-xyz -2.0 25.0 0.0 -subjid 22970 but it showed this: ... masking possible pons locations using cc cutting plane voxel to talairach voxel transform 1.000 0.000 0.000 0.000; 0.000 1.000 0.000 0.000; 0.000 0.000 1.000 0.000; 0.000 0.000 0.000 1.000; brainstem (min, max) thickness = (15,35) brainstem min height = 25 min_delta_thickness = 6 min_cont_brainstem_thickness = 8 min_cont_brainstem_height = 3 Looking for area (min, max) = (350, 790) area[0] = 78 (min = 350, max = 790), aspect = 0.52 (min = 0.60, max = 1.20) need search nearby using +/- offset search region where offset is 3..... using +/- offset search region where offset is 6..... using +/- offset search region where offset is 9..... using +/- offset search region where offset is 12..... using +/- offset search region where offset is 15..... using +/- offset search region where offset is 18..... using +/- offset search region where offset is 21..... using +/- offset search region where offset is 24..... using +/- offset search region where offset is 27..... using +/- offset search region where offset is 30..... using +/- offset search region where offset is 33..... using +/- offset search region where offset is 36..... using +/- offset search region where offset is 39..... using +/- offset search region where offset is 42..... using +/- offset search region where offset is 45..... using +/- offset search region where offset is 48..... initial attempt at finding brainstem failed - initiating backup plan A.... brainstem (min, max) thickness = (15,35) brainstem min height = 25 min_delta_thickness = 6 min_cont_brainstem_thickness = 8 min_cont_brainstem_height = 3 Looking for area (min, max) = (350, 790) area[0] = 78 (min = 350, max = 790), aspect = 0.52 (min = 0.60, max = 1.20) need search nearby using +/- offset search region where offset is 3..... using +/- offset search region where offset is 6..... using +/- offset search region where offset is 9..... using +/- offset search region where offset is 12..... using +/- offset search region where offset is 15..... using +/- offset search region where offset is 18..... using +/- offset search region where offset is 21..... using +/- offset search region where offset is 24..... using +/- offset search region where offset is 27..... using +/- offset search region where offset is 30..... using +/- offset search region where offset is 33..... using +/- offset search region where offset is 36..... using +/- offset search region where offset is 39..... using +/- offset search region where offset is 42..... using +/- offset search region where offset is 45..... using +/- offset search region where offset is 48..... Looking for area (min, max) = (350, 790) area[0] = 1 (min = 350, max = 790), aspect = 1.00 (min = 0.60, max = 1.20) need search nearby using +/- offset search region where offset is 3..... using +/- offset search region where offset is 6..... using +/- offset search region where offset is 9..... using +/- offset search region where offset is 12..... using +/- offset search region where offset is 15..... using +/- offset search region where offset is 18..... using +/- offset search region where offset is 21..... using +/- offset search region where offset is 24..... using +/- offset search region where offset is 27..... using +/- offset search region where offset is 30..... using +/- offset search region where offset is 33..... using +/- offset search region where offset is 36..... using +/- offset search region where offset is 39..... using +/- offset search region where offset is 42..... using +/- offset search region where offset is 45..... using +/- offset search region where offset is 48..... mri_fill: could not find pons No such file or directory INFO: volume does not have linear_transform set nor lta is given by option.-xform. INFO: use identity matrix as the talairach transform. INFO: use src volume parameters for the talairach volume. INFO: Modifying dst c_(r,a,s), using the transform dst INFO: Modifying dst c_(r,a,s), using the transform dst talairach cc position changed to (-2.00, 25.00, 0.00) INFO: Modifying dst c_(r,a,s), using the transform dst find_cutting_plane:seed point not in structure! Searching neighborhood... ERROR: mri_fill exited with non-zero status ------------------------------------------ Filesystem 512-blocks Used Avail Capacity Mounted on /dev/disk0s9 320144448 98977240 220655208 31% / ------------------------------------------ recon-all exited with errors at Wed Jan 26 16:07:52 EST 2005 what could be the problem? thanks a lot. wan

2 1

functional overlay overlap
by Ramapriyan Pratiwadi 26 Jan '05

26 Jan '05

hi all - i've succeeded in displaying FSL z-maps on an inflated brain. however, i'm trying to find a way to display the overlap between two z-maps. i was able to get one to display in red, and the other in blue, with the overlap being purple. however, this doesn't look very convincing, and it would be more helpful to calculate the total number of points in each z-map, and then how many points are in common. is there a way to do this within the freesurfer environment, or even in matlab or idl ? thanks, Ram -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. MailScanner thanks transtec Computers for their support.

2 1

average of functional overlays across subjects
by Joongnam Yang 26 Jan '05

26 Jan '05

Hi All, Would someone point me to a place where I can get information on averaging of functional overlays across subjects? All the materials I have do not have any information about averaging.... Nam.

2 1

topology of vertices in cortical reconstructions
by Glenn Lawyer 26 Jan '05

26 Jan '05

Hi, We are experimenting with statistical methods for analyzing cortical thickness differences in a case/control study. After doing the cortical reconstructions and running mris_glm, we will have the significance (p-value) of the t-ratio of the contrast between case and control. What we want to do is first apply some spatial smoothing to the p-values, and use a false discovery rate controlling method on the resulting smoothed p-values to find an appropriate significance level. We can run mris_glm, save the output in bfloat format, and load into Matlab using 'fread'; no problems. What we are lacking is a description of the topology of the vertices, and the mapping from the vector of floats to this topology. I assume a triangulation implies a 6-connect structure. Correct? Assume the vertices are numbered 1:163842 (as in the output of mris_glm --sigt), which vertices are neighbors (what are the six neighbors of vertex 100) ?? Are distances between neighbors (nearly) constant, or do they vary??? Very much appreciative of your reply, +glenn -- I want to go farther, farther! A. E. L. > Glenn Lawyer < > Instituttgruppe for psykiatri < > Postboks 1130 Blindern < > 0318 Oslo < < http://folk.uio.no/davidgl > <><><><><><><><><><><><><><><><><:)

2 1

how to seed points
by Wan Park 25 Jan '05

25 Jan '05

when i try to create the surface, i receive this message: /usr/local/freesurfer_package/freesurfer/bin/Darwin/mri_fill -lval 255 -rval 80 -ccmask -T 1 -L /usr/local/freesurfer_package/freesurfer/subjects/23963/mri/tmp/ ponscall.dat /usr/local/freesurfer_package/freesurfer/subjects/23963/mri/wm /usr/local/freesurfer_package/freesurfer/subjects/23963/mri/filled using 255 as fill val for left hemisphere. using 80 as fill val for right hemisphere. not using corpus callosum to mask possible location of pons. logging cutting plane coordinates to /usr/local/freesurfer_package/freesurfer/subjects/23963/mri/tmp/ ponscall.dat... reading input volume...done. searching for cutting planes...voxel to talairach voxel transform 1.000 0.000 0.000 0.000; 0.000 1.000 0.000 0.000; 0.000 0.000 1.000 0.000; 0.000 0.000 0.000 1.000; /usr/local/freesurfer_package/freesurfer/bin/Darwin/mri_fill: could not find valid seed for the cc No such file or directory Looking for area (min, max) = (350, 1400) area[0] = 2435 (min = 350, max = 1400), aspect = 0.88 (min = 0.10, max = 0.75) need search nearby using +/- offset search region where offset is 3..... using +/- offset search region where offset is 6..... using +/- offset search region where offset is 9..... using +/- offset search region where offset is 12..... using +/- offset search region where offset is 15..... using +/- offset search region where offset is 18..... using +/- offset search region where offset is 21..... using +/- offset search region where offset is 24..... using +/- offset search region where offset is 27..... using +/- offset search region where offset is 30..... using +/- offset search region where offset is 33..... using +/- offset search region where offset is 36..... using +/- offset search region where offset is 39..... using +/- offset search region where offset is 42..... using +/- offset search region where offset is 45..... using +/- offset search region where offset is 48..... Looking for area (min, max) = (350, 1400) area[0] = 2001 (min = 350, max = 1400), aspect = 0.99 (min = 0.10, max = 0.75) need search nearby using +/- offset search region where offset is 3..... using +/- offset search region where offset is 6..... using +/- offset search region where offset is 9..... using +/- offset search region where offset is 12..... using +/- offset search region where offset is 15..... using +/- offset search region where offset is 18..... using +/- offset search region where offset is 21..... using +/- offset search region where offset is 24..... using +/- offset search region where offset is 27..... using +/- offset search region where offset is 30..... using +/- offset search region where offset is 33..... using +/- offset search region where offset is 36..... using +/- offset search region where offset is 39..... using +/- offset search region where offset is 42..... using +/- offset search region where offset is 45..... using +/- offset search region where offset is 48..... /usr/local/freesurfer_package/freesurfer/bin/Darwin/mri_fill: could not find corpus callosum No such file or directory INFO: volume does not have linear_transform set nor lta is given by option.-xform. INFO: use identity matrix as the talairach transform. INFO: use src volume parameters for the talairach volume. INFO: Modifying dst c_(r,a,s), using the transform dst find_cutting_plane:seed point not in structure! Searching neighborhood... could you please teach me how to solve the problem? thanks, wan park

2 1

manual parcellation of labels
by Ketwaroo, Gyanprakash Avinash 25 Jan '05

25 Jan '05

Hello, I guess my main question is are the volume tal coordinates in tkmedit equivalent to the vertex Tal in tksurfer. That is, can I ignore drawing the line in tkmedit and converting with csurf, and just trace out the Tal = 0 line in tksurfer? I think this is what you are implying but just want to make sure. Also, the cingulate labels are in RAS coordinates. Is there a quick way to convert the Tal=0 coordinate to a RAS coordinate so that I can just divide the cingulate label by applying a condition (eg RAS < x) rather than tracing it out in tksurfer. Thank you for all your help. Avinash Hi Aviinas, you could draw the label directly on the inflated surfaces, then use mri_label2label to map it from one subject (or the average) to the others. cheers, Bruce

1 0

manual parcellation of labels
by Ketwaroo, Gyanprakash Avinash 25 Jan '05

25 Jan '05

Hi, I want to divide my cingulate labels into anterior and posterior cingulate labels. This divison is based on a line perpendicular to the AC-PC axis, and through the AC. Currently, I am trying to do this by using csurf and clicking and saving points along the Tal = 0 coordinate within the midsagittal plane of the tkmedit view. I then go to the points in the tksurfer view and then draw a line here to create a new label. It seems that there must be an easier way of doing this using the code that csurf employs to link the volume and surface coordinates. If you could suggest a method for automating this, I would greatly appreciate it. Thanks, Avinas

2 1

Functional Overlay
by Ruth Smans 25 Jan '05

25 Jan '05

Hi, I am having problems with functional overlays onto my anatomical. When I go to set functional sessions directory an Alert message appears saying : session:left_down (functional name) scripts subdir not found using /tmp make scripts dir to save session_specific params. What exactly is this refering too? Thanks alot Ruth Smans

1 0

Jump to page:

2026

2025

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

2009

2008

2007

2006

2005

2004

Freesurfer