[Freesurfer] mri_convert

2012-07-03 Thread Chen, Xiaoyan
Hi,
I have the data from one of our collaborators. They are dicom files, 
and they are collected from GE. I try to use mri_convert to convert the files 
from dicom to nifti. However, the following error shows up.


 mri_convert 1.2.840.113619.2.135.2025.3762570.5144.1309404440.95.dcm 
1.2.840.113619.2.135.2025.3762570.5144.1309404440.95.nii.gz
mri_convert 1.2.840.113619.2.135.2025.3762570.5144.1309404440.95.dcm 
1.2.840.113619.2.135.2025.3762570.5144.1309404440.95.nii.gz 
$Id: mri_convert.c,v 1.179.2.2 2011/05/16 20:53:47 greve Exp $
reading from 1.2.840.113619.2.135.2025.3762570.5144.1309404440.95.dcm...
Starting DICOMRead2()
dcmfile = 
/autofs/cluster/randy/5/helen/resting_jiliang/1.2.840.113619.2.135.2025.3762570.5144.1309404440.95.dcm
dcmdir = /autofs/cluster/randy/5/helen/resting_jiliang
Ref Series No = 2
Found 15 files, checking for dicoms
Found 1 dicom files in series.
First Sorting
Computing Slice Direction
Vs: 0 0 0
Vs: nan nan nan
Second Sorting
Counting frames
nframes = 1
nslices = 1
ndcmfiles = 1
PE Dir = COL (dicom read)
TransferSyntaxUID: --1.2.840.10008.1.2--
jpegUID:   --1.2.840.10008.1.2.4--
Loading pixel data
TR=2500.00, TE=30.00, TI=0.00, flip angle=90.00
i_ras = (-1, 0, 0)
j_ras = (0, -0.974123, -0.226021)
k_ras = (nan, nan, nan)
Reslicing using trilinear interpolation 
MRIresample(): error inverting matrix; determinant is nan, matrix is:
-3.750   0.000   nan   nan;
 0.000  -3.653   nan   nan;
 0.000  -0.848   nan   nan;
 0.000   0.000   0.000   1.000;

Please suggest the possible reason for the error. Thanks a lot!

Helen


On Jul 3, 2012, at 11:55 AM, Bruce Fischl wrote:

> Hi Brianna
> 
> If the white surface is correct and you can't get watershed/graph cuts to do 
> any better, it may be that erasing voxels from the brainmask or 
> brain.finalsurfs is your only option. If you had multi-echo MPRAGE you might 
> be able to get rid of it also.
> 
> sorry,
> Bruce
> On Tue, 3 Jul 2012, Kolody, Brianna wrote:
> 
>> Hi,
>> We are having problems with some of our pial surfaces extending into the
>> sagittal sinus. We are interested in cortical thickness around the
>> precuneus, etc. I attached a couple screen shots to describe. The error is
>> not repaired by adjusting watershed parameters. How do you suggest we
>> proceed? Should we erase voxels from brainmask? We are concerned since these
>> errors extend for a significant number of slices, in many subjects, and
>> include such a large amount of the sinus.
>> As a second part to this question, I am unclear on how cortical thickness is
>> calculated and whether the statistics are directly derived from the visible
>> surfaces. For instance, when there is an error with the cortical surface
>> image including the sagittal sinus, it also visibly appears as an error in
>> aseg and aparc. However, the mistaken area doesn't have an associated region
>> label in aseg or aparc when we move the cursor over it. Are the cortical
>> thickness statistics reflected by the parcellation, which possibly does not
>> include the sinus, or the surfaces, which do seem to include the sinus?
>> Brianna
>>  
>> 
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[Freesurfer] flip brain

2012-11-20 Thread Chen, Xiaoyan
Dear Freesurfer experts,

   I have a general question regarding data 
analysis. Our group has collected data from patients with OA, some of them 
received treatment on their left leg, some of them on their right leg. We would 
like to flip the brain for the people that received treatment on their left leg 
to match the right leg group. Next, we would like perform group analysis on 
them. My question is, when should we flip the brain for the left leg group 
patients? Should we flip the raw images before we do any preprocessing at the 
individual level? Or should we flip the first level contrast images when we get 
some results for each of these subjects? I tried to flip the contrast images, 
but it seems to give me a lot of error at the second level group analysis 
level. It says that the flipped contrast image does not match the unflipped 
contrast image in orientation. Thank you very much.


Helen
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[Freesurfer] bbregister with SPM

2013-02-28 Thread Chen, Xiaoyan
Dear freesurfer experts,
 I have a question regarding how to 
incorporating bbregister coregistered mean image into the SPM batch.

After realignment step, I convert the mean functional image from the analyze 
format to nii format (to avoid flipping brain using bbregister)

Then, I use bbregister to co-register the mean functional image to subjects' 
surfaces using following command


bbregister -- s subject_name_freesurfer -- mov mean.nii --init-spm -- bold 
--reg register.dat  -- spm-nii


After this step, is the mean.nii the coregistered image already? If it is, in 
SPM, shall I skip the coregistration and segmentation step? If I do skip them, 
in the Normalization step, is the following correct?

source image: mean.nii that has been coregistered in bbregister

image to write: (Dependency) realigned session1 and realigned session2

template image: EPI


Thank you very much for your help.



Helen


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Re: [Freesurfer] bbregister with SPM

2013-03-01 Thread Chen, Xiaoyan
Doug,
   Do you mean that the functional file mean.nii is not aligned 
with the structural data? I know that -- o means resample mov and save as 
outvol. Why do you need to resample the mean.nii? To align with structural data 
in freesurfer? If you do that, will the outvol be able to later be incorporated 
into SPM since it's not in the same dimension as it originally was? Thank you 
very much.


I added -- spm-nii previously. Does this works?

>> bbregister -- s subject_name_freesurfer -- mov mean.nii --init-spm -- bold 
>> --reg register.dat  -- spm-nii -- o mean_new.nii


Helen 


On Feb 28, 2013, at 6:29 PM, Douglas N Greve wrote:

> 
> Hi Helen, it is not aligned. You will need to apply the registration 
> with mri_vol2vol or use the --o option to output a volume. I did not 
> follow how you are trying to incorporate this into the SPM pipeline. 
> Also note that if you are using SPM8, make sure to added --spm-nii or 
> else you will get LR reversals.
> doug
> 
> On 02/28/2013 04:24 PM, Chen, Xiaoyan wrote:
>> Dear freesurfer experts,
>>  I have a question regarding how to 
>> incorporating bbregister coregistered mean image into the SPM batch.
>> 
>> After realignment step, I convert the mean functional image from the analyze 
>> format to nii format (to avoid flipping brain using bbregister)
>> 
>> Then, I use bbregister to co-register the mean functional image to subjects' 
>> surfaces using following command
>> 
>> 
>> bbregister -- s subject_name_freesurfer -- mov mean.nii --init-spm -- bold 
>> --reg register.dat  -- spm-nii
>> 
>> 
>> After this step, is the mean.nii the coregistered image already? If it is, 
>> in SPM, shall I skip the coregistration and segmentation step? If I do skip 
>> them, in the Normalization step, is the following correct?
>> 
>> source image: mean.nii that has been coregistered in bbregister
>> 
>> image to write: (Dependency) realigned session1 and realigned session2
>> 
>> template image: EPI
>> 
>> 
>> Thank you very much for your help.
>> 
>> 
>> 
>> Helen
>> 
>> 
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>> 
>> 
> 
> -- 
> Douglas N. Greve, Ph.D.
> MGH-NMR Center
> gr...@nmr.mgh.harvard.edu
> Phone Number: 617-724-2358
> Fax: 617-726-7422
> 
> Bugs: surfer.nmr.mgh.harvard.edu/fswiki/BugReporting
> FileDrop: www.nmr.mgh.harvard.edu/facility/filedrop/index.html
> Outgoing: ftp://surfer.nmr.mgh.harvard.edu/transfer/outgoing/flat/greve/
> 
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[Freesurfer] set path for BBR

2013-03-01 Thread Chen, Xiaoyan
Hi,

If I want to use epi_reg, what do I need to do for the environment in fsl? It 
says that it's not recognizing the function bbr. How do find the path to BBR in 
/usr/pubsw? 

Thank you very much.

Helen
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Re: [Freesurfer] set path for BBR

2013-03-01 Thread Chen, Xiaoyan
Doug,
 epi_reg is using BBregister with FSL. In FSL5 they incorporated 
the tool your guys developed.  The following is the error message

[mi2b2:OAEAA005] (nmr-stable5.1-env) epi_reg --epi=meanuf-ep2d-18-0001.nii.gz 
--t1=MPRAGE1.nii.gz --t1brain=MPRAGE1_manual2.nii.gz --out=epi2struct.nii.gz
Running FAST segmentation
FLIRT pre-alignment
Running BBR
Unrecognised cost function type: bbr
Could not open matrix file epi2struct.mat
terminate called after throwing an instance of 
'NEWMAT::IncompatibleDimensionsException'
/usr/pubsw/packages/fsl/5.0.1/bin/epi_reg: line 353: 47296 Aborted  
   (core dumped) $FSLDIR/bin/applywarp -i ${vepi} -r ${vrefhead} -o ${vout} 
--premat=${vout}.mat --interp=spline
[mi2b2:OAEAA005] (nmr-stable5.1-env) epi_reg --epi=meanuf-ep2d-18-0001.nii.gz 
--t1=MPRAGE1.nii.gz --t1brain=MPRAGE1_manual2.nii.gz --out=epi2struct
Running FAST segmentation
FLIRT pre-alignment
Running BBR
Unrecognised cost function type: bbr
Could not open matrix file epi2struct.mat
terminate called after throwing an instance of 
'NEWMAT::IncompatibleDimensionsException'
/usr/pubsw/packages/fsl/5.0.1/bin/epi_reg: line 353: 48263 Aborted  
   (core dumped) $FSLDIR/bin/applywarp -i ${vepi} -r ${vrefhead} -o ${vout} 
--premat=${vout}.mat --interp=spline



Helen


From: freesurfer-boun...@nmr.mgh.harvard.edu 
[freesurfer-boun...@nmr.mgh.harvard.edu] on behalf of Douglas N Greve 
[gr...@nmr.mgh.harvard.edu]
Sent: Friday, March 01, 2013 2:22 PM
To: freesurfer@nmr.mgh.harvard.edu
Subject: Re: [Freesurfer] set path for BBR

what is epi_reg? Is that an FS program?

On 03/01/2013 02:19 PM, Chen, Xiaoyan wrote:
> Hi,
>
> If I want to use epi_reg, what do I need to do for the environment in fsl? It 
> says that it's not recognizing the function bbr. How do find the path to BBR 
> in /usr/pubsw?
>
> Thank you very much.
>
> Helen
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>
>

--
Douglas N. Greve, Ph.D.
MGH-NMR Center
gr...@nmr.mgh.harvard.edu
Phone Number: 617-724-2358
Fax: 617-726-7422

Bugs: surfer.nmr.mgh.harvard.edu/fswiki/BugReporting
FileDrop: www.nmr.mgh.harvard.edu/facility/filedrop/index.html
Outgoing: ftp://surfer.nmr.mgh.harvard.edu/transfer/outgoing/flat/greve/

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Re: [Freesurfer] set path for BBR

2013-03-01 Thread Chen, Xiaoyan
Dear all,
   Thank you so much! It works now.

Helen


On Mar 1, 2013, at 2:41 PM, Mark Jenkinson wrote:

> Hi,
> 
> It looks like your installation isn't right - you need FSL5.0 or higher for 
> this to work.  If not I would expect it to complain about: "Unrecognised cost 
> function type: bbr" as it seems to do.
> 
> Maybe you should check that you are picking up the right version of FSL, by 
> doing:
>  which flirt
> and
>  echo $FSLDIR
> 
> Only if these are both pointing at the same place and are installations of 
> FSL5.0 or higher, would this work.
> 
> All the best,
>   Mark
> 
> 
> 
> 
> On 1 Mar 2013, at 19:31, Bruce Fischl 
> wrote:
> 
>> oh, this is the FSL reimplementation of Doug's algorithm (they loved it so 
>> much they had to have their own!). You'll need to ask them about it. I'll cc 
>> MJ so he can chime in.
>> 
>> cheers
>> Bruce
>> 
>> 
>> 
>> 
>> On Fri, 1 Mar 2013, Chen, Xiaoyan wrote:
>> 
>>> Doug,
>>>   epi_reg is using BBregister with FSL. In FSL5 they incorporated 
>>> the tool your guys developed.  The following is the error message
>>> 
>>> [mi2b2:OAEAA005] (nmr-stable5.1-env) epi_reg 
>>> --epi=meanuf-ep2d-18-0001.nii.gz --t1=MPRAGE1.nii.gz 
>>> --t1brain=MPRAGE1_manual2.nii.gz --out=epi2struct.nii.gz
>>> Running FAST segmentation
>>> FLIRT pre-alignment
>>> Running BBR
>>> Unrecognised cost function type: bbr
>>> Could not open matrix file epi2struct.mat
>>> terminate called after throwing an instance of 
>>> 'NEWMAT::IncompatibleDimensionsException'
>>> /usr/pubsw/packages/fsl/5.0.1/bin/epi_reg: line 353: 47296 Aborted  
>>>(core dumped) $FSLDIR/bin/applywarp -i ${vepi} -r ${vrefhead} -o 
>>> ${vout} --premat=${vout}.mat --interp=spline
>>> [mi2b2:OAEAA005] (nmr-stable5.1-env) epi_reg 
>>> --epi=meanuf-ep2d-18-0001.nii.gz --t1=MPRAGE1.nii.gz 
>>> --t1brain=MPRAGE1_manual2.nii.gz --out=epi2struct
>>> Running FAST segmentation
>>> FLIRT pre-alignment
>>> Running BBR
>>> Unrecognised cost function type: bbr
>>> Could not open matrix file epi2struct.mat
>>> terminate called after throwing an instance of 
>>> 'NEWMAT::IncompatibleDimensionsException'
>>> /usr/pubsw/packages/fsl/5.0.1/bin/epi_reg: line 353: 48263 Aborted  
>>>(core dumped) $FSLDIR/bin/applywarp -i ${vepi} -r ${vrefhead} -o 
>>> ${vout} --premat=${vout}.mat --interp=spline
>>> 
>>> 
>>> 
>>> Helen
>>> 
>>> 
>>> From: freesurfer-boun...@nmr.mgh.harvard.edu 
>>> [freesurfer-boun...@nmr.mgh.harvard.edu] on behalf of Douglas N Greve 
>>> [gr...@nmr.mgh.harvard.edu]
>>> Sent: Friday, March 01, 2013 2:22 PM
>>> To: freesurfer@nmr.mgh.harvard.edu
>>> Subject: Re: [Freesurfer] set path for BBR
>>> 
>>> what is epi_reg? Is that an FS program?
>>> 
>>> On 03/01/2013 02:19 PM, Chen, Xiaoyan wrote:
>>>> Hi,
>>>> 
>>>> If I want to use epi_reg, what do I need to do for the environment in fsl? 
>>>> It says that it's not recognizing the function bbr. How do find the path 
>>>> to BBR in /usr/pubsw?
>>>> 
>>>> Thank you very much.
>>>> 
>>>> Helen
>>>> ___
>>>> Freesurfer mailing list
>>>> Freesurfer@nmr.mgh.harvard.edu
>>>> https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
>>>> 
>>>> 
>>> 
>>> --
>>> Douglas N. Greve, Ph.D.
>>> MGH-NMR Center
>>> gr...@nmr.mgh.harvard.edu
>>> Phone Number: 617-724-2358
>>> Fax: 617-726-7422
>>> 
>>> Bugs: surfer.nmr.mgh.harvard.edu/fswiki/BugReporting
>>> FileDrop: www.nmr.mgh.harvard.edu/facility/filedrop/index.html
>>> Outgoing: ftp://surfer.nmr.mgh.harvard.edu/transfer/outgoing/flat/greve/
>>> 
>>> ___
>>> Freesurfer mailing list
>>> Freesurfer@nmr.mgh.harvard.edu
>>> https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
>>> 
>>> ___
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>>> 
>>> 
>>> 
>> 
>> 
>> 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 . 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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