Freesurfer June 2009

freesurfer@nmr.mgh.harvard.edu

94 participants
140 discussions

Stand processing prepared for longitudinal pipeline.
by Hui Zheng 08 Jun '09

08 Jun '09

Hi, We are processing our data for the longitudinal pipeline. I found some subjects' brainmask with skull/dura remaining, and a portion of the skull was segmented as cortical gray matter in aseg. I'd like to ask if this kind of problem will affect the longitudinal registration/template creation? I have one more question. Is the method described in the paper by Golland P (2003), Permutation Tests for Classification: Towards Statistical Significance in Image-Based Studies, used in FreeSurfer? Thanks, Zheng Hui

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mri_glmfit significiance verification outside freesurfer
by Jeff Sadino 08 Jun '09

08 Jun '09

Hello Surfers, I am trying to verify the p-value sig.mgh maps outputted from the mri_glmfit command as the first part of a more advanced analysis. We have been extracting the thickness data for a single vertex from each of our 58 subjects in two control groups and then running a significiance analysis is SAS. We thought that the output from SAS should match the p-value in the sig.mgh file, but the p-values do not match at all. We have tested multiple data points. Does freesurfer do some sort of a more advanced significance analysis that is not in the standard documentation? Thank you very much, Jeff Sadino _________________________________________________________________ Windows Live™ SkyDrive™: Get 25 GB of free online storage. http://windowslive.com/online/skydrive?ocid=TXT_TAGLM_WL_SD_25GB_062009

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Brain cortical structures segmentation - comparison of hippocampal volumes
by Flavio Seixas 08 Jun '09

08 Jun '09

My name is Flavio, student at Universidade Federal Fluminense. I research image segmentation methods applied to brain cortical structures segmentation. I've compared against the hippocampal region got from FIRST-FSL to Freesurfer, using the same magnetic resonance (MR) image. The FSL is a neuroimage analysis tool developed by FMRI group from Oxford. I found out a great volume difference between segmentations. Despite different automated image analysis tool, I was expecting a higher volume overlap index when comparing the same brain structure from the same MR image. I got about 25% volume overlap. Is there any "recon-all" flag that I can use in conjunction with entire process so as to get better volume overlap? I would appreciate any suggestion. Thank you in advance, Flavio.

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TAL QA check failed
by Barnali Basu 08 Jun '09

08 Jun '09

Experts, I got the following error while running a subject with recon-all autorecon1 ERROR: Talairach QA check failed! z-score = -8 <= -4 = threshold Manual Talairach alignment may be necessary, or include the -notal-check flag to skip this test. See http://surfer.nmr.mgh.harvard.edu/fswiki/FsTutorial/Talairach Linux barnali-work 2.6.24-16-server #1 SMP Thu Apr 10 13:58:00 UTC 2008 i686 GNU/Linux recon-all exited with ERRORS at Fri Jun 5 22:35:17 PDT 2009 I gathered from other posts on this error that the fix depends upon the z -score. In this case the z-score is -8, what is the best way to get it fixed. Previously i had fixed similar error and i had fixed it with tkregister2, but z-score was different Thanks and Regards -- Barnali Basu Cell : 425 638 2936 Home: 206 257 0174

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Re: [Freesurfer] mris_anatomical_stats
by Nick Schmansky 08 Jun '09

08 Jun '09

Kevin, I've tracked down some memory trampling going on in mris_anatomical_stats, and posted a fixed version for linux x86_64 here: ftp://surfer.nmr.mgh.harvard.edu/pub/dist/freesurfer/fixes/linux- centos4_x86_64 Nick On Mon, 2009-06-08 at 15:10 -0700, Kevin Scheibel wrote: > I am running mris_anatomical_stats and keep getting the same error. > Here’s the entire log file…looks like the big error happens at ‘glibc > detected’ > > > > computing statistics for each annotation > in /ifs/woods/scott_temp/kevin_work/freeseg/subj/078/label/rh.aparc.annot. > > outputting results > to /ifs/tmp/pipeline-4.2/pipelnvr/2009June08_15h03m16s361ms/MRISAnatomicalStats.StatsFile_0-077.stats... > > reading > volume /ifs/woods/scott_temp/kevin_work/freeseg/subj_xfm/078/mri/wm.mgz... > > reading input > surface /ifs/woods/scott_temp/kevin_work/freeseg/subj_xfm/078/surf/lh.pial... > > reading input pial > surface /ifs/woods/scott_temp/kevin_work/freeseg/subj_xfm/078/surf/lh.pial... > > reading input white > surface /ifs/woods/scott_temp/kevin_work/freeseg/subj_xfm/078/surf/lh.white... > > reading colortable from annotation file... > > colortable with 36 entries read > (originally /autofs/space/amaebi_026/users/buckner_cortical_atlas/scripts/colortable_final.txt) > > *** glibc detected > *** /usr/local/freesurfer-4.3.0_64bit/bin/mris_anatomical_stats: free > (): invalid pointer: 0x00002af35c93d000 *** > > ======= Backtrace: ========= > > /lib64/libc.so.6[0x35c4671684] > > /lib64/libc.so.6(cfree+0x8c)[0x35c4674ccc] > > /lib64/libc.so.6(_IO_free_backup_area+0x18)[0x35c466dd68] > > /lib64/libc.so.6(_IO_file_overflow+0x1d2)[0x35c466bd62] > > /lib64/libc.so.6(_IO_vfprintf+0x4a7e)[0x35c4646d4e] > > /lib64/libc.so.6(_IO_fprintf+0x88)[0x35c464cf68] > > /usr/local/freesurfer-4.3.0_64bit/bin/mris_anatomical_stats(vfprintf > +0x338d)[0x40898d] > > /lib64/libc.so.6(__libc_start_main+0xf4)[0x35c461d8b4] > > /usr/local/freesurfer-4.3.0_64bit/bin/mris_anatomical_stats > (__gxx_personality_v0+0xfa)[0x40626a] > > ======= Memory map: ======== > > 00400000-00786000 r-xp 00000000 00:16 > 238900739 /usr/local/freesurfer-4.3.0_64bit/bin/mris_anatomical_stats > > 00886000-008e0000 rw-p 00386000 00:16 > 238900739 /usr/local/freesurfer-4.3.0_64bit/bin/mris_anatomical_stats > > 008e0000-0209f000 rw-p 008e0000 00:00 0 > > 04da5000-0b132000 rw-p 04da5000 00:00 0 > > 35c4200000-35c421a000 r-xp 00000000 08:01 > 4321433 /lib64/ld-2.5.so > > 35c441a000-35c441b000 r--p 0001a000 08:01 > 4321433 /lib64/ld-2.5.so > > 35c441b000-35c441c000 rw-p 0001b000 08:01 > 4321433 /lib64/ld-2.5.so > > 35c4600000-35c474a000 r-xp 00000000 08:01 > 4321434 /lib64/libc-2.5.so > > 35c474a000-35c4949000 ---p 0014a000 08:01 > 4321434 /lib64/libc-2.5.so > > 35c4949000-35c494d000 r--p 00149000 08:01 > 4321434 /lib64/libc-2.5.so > > 35c494d000-35c494e000 rw-p 0014d000 08:01 > 4321434 /lib64/libc-2.5.so > > 35c494e000-35c4953000 rw-p 35c494e000 00:00 0 > > 35c4a00000-35c4a21000 r-xp 00000000 08:01 > 12354411 /usr/lib64/libjpeg.so.62.0.0 > > 35c4a21000-35c4c20000 ---p 00021000 08:01 > 12354411 /usr/lib64/libjpeg.so.62.0.0 > > 35c4c20000-35c4c21000 rw-p 00020000 08:01 > 12354411 /usr/lib64/libjpeg.so.62.0.0 > > 35c4e00000-35c4e57000 r-xp 00000000 08:01 > 12354412 /usr/lib64/libtiff.so.3.8.2 > > 35c4e57000-35c5056000 ---p 00057000 08:01 > 12354412 /usr/lib64/libtiff.so.3.8.2 > > 35c5056000-35c5059000 rw-p 00056000 08:01 > 12354412 /usr/lib64/libtiff.so.3.8.2 > > 35c5200000-35c5282000 r-xp 00000000 08:01 > 4321204 /lib64/libm-2.5.so > > 35c5282000-35c5481000 ---p 00082000 08:01 > 4321204 /lib64/libm-2.5.so > > 35c5481000-35c5482000 r--p 00081000 08:01 > 4321204 /lib64/libm-2.5.so > > 35c5482000-35c5483000 rw-p 00082000 08:01 > 4321204 /lib64/libm-2.5.so > > 35c6200000-35c6214000 r-xp 00000000 08:01 > 12346484 /usr/lib64/libz.so.1.2.3 > > 35c6214000-35c6413000 ---p 00014000 08:01 > 12346484 /usr/lib64/libz.so.1.2.3 > > 35c6413000-35c6414000 rw-p 00013000 08:01 12346484 > /usr/lib64/libz.so.1.2.3 > > 35c6600000-35c6609000 r-xp 00000000 08:01 > 4321447 /lib64/libcrypt-2.5.so > > 35c6609000-35c6808000 ---p 00009000 08:01 > 4321447 /lib64/libcrypt-2.5.so > > 35c6808000-35c6809000 r--p 00008000 08:01 > 4321447 /lib64/libcrypt-2.5.so > > 35c6809000-35c680a000 rw-p 00009000 08:01 > 4321447 /lib64/libcrypt-2.5.so > > 35c680a000-35c6838000 rw-p 35c680a000 00:00 0 > > 35c6a00000-35c6ae6000 r-xp 00000000 08:01 > 12346051 /usr/lib64/libstdc++.so.6.0.8 > > 35c6ae6000-35c6ce5000 ---p 000e6000 08:01 > 12346051 /usr/lib64/libstdc++.so.6.0.8 > > 35c6ce5000-35c6ceb000 r--p 000e5000 08:01 > 12346051 /usr/lib64/libstdc++.so.6.0.8 > > 35c6ceb000-35c6cee000 rw-p 000eb000 08:01 > 12346051 /usr/lib64/libstdc++.so.6.0.8 > > 35c6cee000-35c6d00000 rw-p 35c6cee000 00:00 0 > > 35c7200000-35c720d000 r-xp 00000000 08:01 > 4321444 /lib64/libgcc_s-4.1.2-20080102.so.1 > > 35c720d000-35c740d000 ---p 0000d000 08:01 > 4321444 /lib64/libgcc_s-4.1.2-20080102.so.1 > > 35c740d000-35c740e000 rw-p 0000d000 08:01 > 4321444 /lib64/libgcc_s-4.1.2-20080102.so.1 > > 2af35799b000-2af35799e000 rw-p 2af35799b000 00:00 0 > > 2af3579a7000-2af3579a8000 rw-p 2af3579a7000 00:00 0 > > 2af3579a8000-2af3579aa000 r-xp 00000000 08:01 > 4321435 /lib64/libdl-2.5.so > > 2af3579aa000-2af357baa000 ---p 00002000 08:01 > 4321435 /lib64/libdl-2.5.so > > 2af357baa000-2af357bab000 r--p 00002000 08:01 > 4321435 /lib64/libdl-2.5.so > > 2af357bab000-2af357bac000 rw-p 00003000 08:01 > 4321435 /lib64/libdl-2.5.so > > 2af357bac000-2af357bc1000 r-xp 00000000 08:01 4321439 > /lib64/libpthread-2.5.so > > 2af357bc1000-2af357dc0000 ---p 00015000 08:01 > 4321439 /lib64/libpthread-2.5.so > > 2af357dc0000-2af357dc1000 r--p 00014000 08:01 > 4321439 /lib64/libpthread-2.5.so > > 2af357dc1000-2af357dc2000 rw-p 00015000 08:01 > 4321439 /lib64/libpthread-2.5.so > > 2af357dc2000-2af35c93f000 rw-p 2af357dc2000 00:00 0 > > 2af360000000-2af360021000 rw-p 2af360000000 00:00 0 > > 2af360021000-2af364000000 ---p 2af360021000 00:00 0 > > 7fff52ee6000-7fff5310f000 rw-p 7fff52ee6000 00:00 0 > [stack] > > ffffffffff600000-ffffffffffe00000 ---p 00000000 00:00 0 > [vdso] > > /ifs/woods/scott_temp/kevin_work/freeseg/freesurfer-4.3.0_64bit/bin/mris_anatomical_stats.sh: line 8: 28655 Aborted /usr/local/freesurfer-4.3.0_64bit/bin/mris_anatomical_stats $@ > > > > > > > > Kevin Scheibel > > k.scheibel(a)ucla.edu > > > > > _______________________________________________ > Freesurfer mailing list > Freesurfer(a)nmr.mgh.harvard.edu > https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer

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mris_anatomical_stats
by Kevin Scheibel 08 Jun '09

08 Jun '09

I am running mris_anatomical_stats and keep getting the same error. Here's the entire log file.looks like the big error happens at 'glibc detected' computing statistics for each annotation in /ifs/woods/scott_temp/kevin_work/freeseg/subj/078/label/rh.aparc.annot. outputting results to /ifs/tmp/pipeline-4.2/pipelnvr/2009June08_15h03m16s361ms/MRISAnatomicalStats .StatsFile_0-077.stats... reading volume /ifs/woods/scott_temp/kevin_work/freeseg/subj_xfm/078/mri/wm.mgz... reading input surface /ifs/woods/scott_temp/kevin_work/freeseg/subj_xfm/078/surf/lh.pial... reading input pial surface /ifs/woods/scott_temp/kevin_work/freeseg/subj_xfm/078/surf/lh.pial... reading input white surface /ifs/woods/scott_temp/kevin_work/freeseg/subj_xfm/078/surf/lh.white... reading colortable from annotation file... colortable with 36 entries read (originally /autofs/space/amaebi_026/users/buckner_cortical_atlas/scripts/colortable_fin al.txt) *** glibc detected *** /usr/local/freesurfer-4.3.0_64bit/bin/mris_anatomical_stats: free(): invalid pointer: 0x00002af35c93d000 *** ======= Backtrace: ========= /lib64/libc.so.6[0x35c4671684] /lib64/libc.so.6(cfree+0x8c)[0x35c4674ccc] /lib64/libc.so.6(_IO_free_backup_area+0x18)[0x35c466dd68] /lib64/libc.so.6(_IO_file_overflow+0x1d2)[0x35c466bd62] /lib64/libc.so.6(_IO_vfprintf+0x4a7e)[0x35c4646d4e] /lib64/libc.so.6(_IO_fprintf+0x88)[0x35c464cf68] /usr/local/freesurfer-4.3.0_64bit/bin/mris_anatomical_stats(vfprintf+0x338d) [0x40898d] /lib64/libc.so.6(__libc_start_main+0xf4)[0x35c461d8b4] /usr/local/freesurfer-4.3.0_64bit/bin/mris_anatomical_stats(__gxx_personalit y_v0+0xfa)[0x40626a] ======= Memory map: ======== 00400000-00786000 r-xp 00000000 00:16 238900739 /usr/local/freesurfer-4.3.0_64bit/bin/mris_anatomical_stats 00886000-008e0000 rw-p 00386000 00:16 238900739 /usr/local/freesurfer-4.3.0_64bit/bin/mris_anatomical_stats 008e0000-0209f000 rw-p 008e0000 00:00 0 04da5000-0b132000 rw-p 04da5000 00:00 0 35c4200000-35c421a000 r-xp 00000000 08:01 4321433 /lib64/ld-2.5.so 35c441a000-35c441b000 r--p 0001a000 08:01 4321433 /lib64/ld-2.5.so 35c441b000-35c441c000 rw-p 0001b000 08:01 4321433 /lib64/ld-2.5.so 35c4600000-35c474a000 r-xp 00000000 08:01 4321434 /lib64/libc-2.5.so 35c474a000-35c4949000 ---p 0014a000 08:01 4321434 /lib64/libc-2.5.so 35c4949000-35c494d000 r--p 00149000 08:01 4321434 /lib64/libc-2.5.so 35c494d000-35c494e000 rw-p 0014d000 08:01 4321434 /lib64/libc-2.5.so 35c494e000-35c4953000 rw-p 35c494e000 00:00 0 35c4a00000-35c4a21000 r-xp 00000000 08:01 12354411 /usr/lib64/libjpeg.so.62.0.0 35c4a21000-35c4c20000 ---p 00021000 08:01 12354411 /usr/lib64/libjpeg.so.62.0.0 35c4c20000-35c4c21000 rw-p 00020000 08:01 12354411 /usr/lib64/libjpeg.so.62.0.0 35c4e00000-35c4e57000 r-xp 00000000 08:01 12354412 /usr/lib64/libtiff.so.3.8.2 35c4e57000-35c5056000 ---p 00057000 08:01 12354412 /usr/lib64/libtiff.so.3.8.2 35c5056000-35c5059000 rw-p 00056000 08:01 12354412 /usr/lib64/libtiff.so.3.8.2 35c5200000-35c5282000 r-xp 00000000 08:01 4321204 /lib64/libm-2.5.so 35c5282000-35c5481000 ---p 00082000 08:01 4321204 /lib64/libm-2.5.so 35c5481000-35c5482000 r--p 00081000 08:01 4321204 /lib64/libm-2.5.so 35c5482000-35c5483000 rw-p 00082000 08:01 4321204 /lib64/libm-2.5.so 35c6200000-35c6214000 r-xp 00000000 08:01 12346484 /usr/lib64/libz.so.1.2.3 35c6214000-35c6413000 ---p 00014000 08:01 12346484 /usr/lib64/libz.so.1.2.3 35c6413000-35c6414000 rw-p 00013000 08:01 12346484 /usr/lib64/libz.so.1.2.3 35c6600000-35c6609000 r-xp 00000000 08:01 4321447 /lib64/libcrypt-2.5.so 35c6609000-35c6808000 ---p 00009000 08:01 4321447 /lib64/libcrypt-2.5.so 35c6808000-35c6809000 r--p 00008000 08:01 4321447 /lib64/libcrypt-2.5.so 35c6809000-35c680a000 rw-p 00009000 08:01 4321447 /lib64/libcrypt-2.5.so 35c680a000-35c6838000 rw-p 35c680a000 00:00 0 35c6a00000-35c6ae6000 r-xp 00000000 08:01 12346051 /usr/lib64/libstdc++.so.6.0.8 35c6ae6000-35c6ce5000 ---p 000e6000 08:01 12346051 /usr/lib64/libstdc++.so.6.0.8 35c6ce5000-35c6ceb000 r--p 000e5000 08:01 12346051 /usr/lib64/libstdc++.so.6.0.8 35c6ceb000-35c6cee000 rw-p 000eb000 08:01 12346051 /usr/lib64/libstdc++.so.6.0.8 35c6cee000-35c6d00000 rw-p 35c6cee000 00:00 0 35c7200000-35c720d000 r-xp 00000000 08:01 4321444 /lib64/libgcc_s-4.1.2-20080102.so.1 35c720d000-35c740d000 ---p 0000d000 08:01 4321444 /lib64/libgcc_s-4.1.2-20080102.so.1 35c740d000-35c740e000 rw-p 0000d000 08:01 4321444 /lib64/libgcc_s-4.1.2-20080102.so.1 2af35799b000-2af35799e000 rw-p 2af35799b000 00:00 0 2af3579a7000-2af3579a8000 rw-p 2af3579a7000 00:00 0 2af3579a8000-2af3579aa000 r-xp 00000000 08:01 4321435 /lib64/libdl-2.5.so 2af3579aa000-2af357baa000 ---p 00002000 08:01 4321435 /lib64/libdl-2.5.so 2af357baa000-2af357bab000 r--p 00002000 08:01 4321435 /lib64/libdl-2.5.so 2af357bab000-2af357bac000 rw-p 00003000 08:01 4321435 /lib64/libdl-2.5.so 2af357bac000-2af357bc1000 r-xp 00000000 08:01 4321439 /lib64/libpthread-2.5.so 2af357bc1000-2af357dc0000 ---p 00015000 08:01 4321439 /lib64/libpthread-2.5.so 2af357dc0000-2af357dc1000 r--p 00014000 08:01 4321439 /lib64/libpthread-2.5.so 2af357dc1000-2af357dc2000 rw-p 00015000 08:01 4321439 /lib64/libpthread-2.5.so 2af357dc2000-2af35c93f000 rw-p 2af357dc2000 00:00 0 2af360000000-2af360021000 rw-p 2af360000000 00:00 0 2af360021000-2af364000000 ---p 2af360021000 00:00 0 7fff52ee6000-7fff5310f000 rw-p 7fff52ee6000 00:00 0 [stack] ffffffffff600000-ffffffffffe00000 ---p 00000000 00:00 0 [vdso] /ifs/woods/scott_temp/kevin_work/freeseg/freesurfer-4.3.0_64bit/bin/mris_ana tomical_stats.sh: line 8: 28655 Aborted /usr/local/freesurfer-4.3.0_64bit/bin/mris_anatomical_stats $@ Kevin Scheibel k.scheibel(a)ucla.edu

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vtkMultiThreader error
by Don Hagler 08 Jun '09

08 Jun '09

When we run v430 on our cluster, running rocks redhat 4.3, we get the error message below when mris_volmask is run. From a google search, I see that someone had the same error message back in Oct 2007. Was a solution found for this? It runs fine on our desktop machines as well as when we log in directly to a node and run the job interactively. mris_volmask --label_left_white 2 --label_left_ribbon 3 --label_right_white 41 --label_right_ribbon 42 --save_ribbon --save_distance FREESURFERRECON_NTNU_PRE_095v2_20071126.173245.968000_1 SUBJECTS_DIR is /home/dhagler/data_test ERROR: In /usr/pubsw/packages/vtk/5.2.0/src/Common/vtkMultiThreader.cxx, line 372 vtkMultiThreader (0x1306ec80): Unable to create a thread. pthread_create() returned 12 ERROR: In /usr/pubsw/packages/vtk/5.2.0/src/Common/vtkMultiThreader.cxx, line 372 vtkMultiThreader (0x1306ec80): Unable to create a thread. pthread_create() returned 12 ERROR: In /usr/pubsw/packages/vtk/5.2.0/src/Common/vtkMultiThreader.cxx, line 372 vtkMultiThreader (0x1306ec80): Unable to create a thread. pthread_create() returned 12 ERROR: In /usr/pubsw/packages/vtk/5.2.0/src/Common/vtkMultiThreader.cxx, line 372 vtkMultiThreader (0x1306ec80): Unable to create a thread. pthread_create() returned 12 ERROR: In /usr/pubsw/packages/vtk/5.2.0/src/Common/vtkMultiThreader.cxx, line 372 vtkMultiThreader (0x1306ec80): Unable to create a thread. pthread_create() returned 12 ERROR: In /usr/pubsw/packages/vtk/5.2.0/src/Common/vtkMultiThreader.cxx, line 372 vtkMultiThreader (0x1306ec80): Unable to create a thread. pthread_create() returned 12 ERROR: In /usr/pubsw/packages/vtk/5.2.0/src/Common/vtkMultiThreader.cxx, line 372 vtkMultiThreader (0x1306ec80): Unable to create a thread. pthread_create() returned 12 Segmentation fault Linux compute-0-12.local 2.6.9-55.0.2.ELsmp #1 SMP Tue Jun 26 14:14:47 EDT 2007 x86_64 x86_64 x86_64 GNU/Linux recon-all exited with ERRORS at Fri Jun 5 18:58:09 PDT 2009 _________________________________________________________________ Hotmail® has ever-growing storage! Don’t worry about storage limits. http://windowslive.com/Tutorial/Hotmail/Storage?ocid=TXT_TAGLM_WL_HM_Tutori…

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Talairach coordinates
by Rafa x 08 Jun '09

08 Jun '09

Dear Freesurfer team, I used the lh.inflated file in an average subject to obtain its vertex’s coordinates. My question is: What anatomical space or reference system was use in this file? or instead, How I could obtain the Talairach coordinates of each vertex? Thank you in advance, Rafa.

2 1

about ROI
by Gabriel Go.Es. 08 Jun '09

08 Jun '09

hello freesurfers i have a doubt: i have convert a subject brainmask from freesurfer to nii and then i've convert a label that i create on freesurfer to *.nii using for registration the brainmask.mgz, i've made that for working in SPM, but when i open the ROI just not match with my subject... Regards Gabriel _________________________________________________________________ Chatea sin límites en Messenger con la tarifa plana de Orange http://serviciosmoviles.es.msn.com/messenger/orange.aspx

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extracting bval and bvecs from Siemens trio DWI
by raka maitra 08 Jun '09

08 Jun '09

Hello Doug The Siemen's Trio gives us Diffusion weighted images in the form of MR.10284.746.There are no extensions such as .dcm or .ima I can convert the dicom to nifti .nii format using SPM or FSL.But neither program extracts the bval or bvec information. I am working on Mac OsX 10.5 and am using FS v4.3.1 I tried using mri_convert subject/MR* dwi.nii -it siemens_dicom I am trying to ckeck the quality of the DWI and hence would like to perform eddy current correction and preprocess the images to generate FA maps. Thanks in advanceRaka

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Freesurfer June 2009