It is strange: Here is the test that I did with one of the structual images of the spm-sample datasets and two structurals of two studies of our own lab:
original bias corrected
spm-sample 256*256*54 int16 6.8MB -1*1*3 256*256*54 float32 13.5MB -1*1*3 viewable
test1 320*512*512 int16 160MB -0.5*0.5*0.5 320*512*512 float32 320MB -0.5*0.5*0.5 not viewable
test2 512*512*320 int16 160MB -0.5*0.5*0.5 512*512*320 float32 320MB -0.5*0.5*0.5 not viewable
Is it possible that SPM can simply not handle images of this size? Because it is no problem e.g. to open all images with freesurfers tkmedit.
All the best,
- Lucas
> -----Ursprüngliche Nachricht-----
> Von: "John Ashburner" <[log in to unmask]>
> Gesendet: 28.08.08 12:18:02
> An: [log in to unmask]
> Betreff: Re: [SPM] Problems viewing bias corrected image
> I'm not sure what the cause of this problem is. If the dimensions are
> 512*512*320, then the size of the file seems to be correct (for a floating
> point image, requireing 4 bytes per voxel). Is it possible that you may have
> tried to display the bias corrected image before SPM had finished writing it?
>
> Best regards,
> -John
>
> On Thursday 28 August 2008 09:53, Lu Eggert wrote:
> > Dear List,
> >
> > I segmented a T1 image with SPM5 default settings. I can view the
> > resulting gray matter and white matter images with SPM-Display without any
> > problem. Trying the same with the bias corrected image gives the following
> > error message:
> >
> > ****************************
> >
> > mt1_huntington_example.img" can not be resampled
> > ??? Error using ==> spm_sample_vol
> > File too small.
> >
> > Error in ==> spm_orthviews>cm_pos at 1843
> >
> > set(findobj(st.vols{i}.ax{1}.cm,'UserData','v_value'),...
> >
> > Error in ==> spm_orthviews at 258cm_pos;
> >
> > Error in ==> spm_orthviews>addcontexts at 762
> > spm_orthviews('reposition',spm_orthviews('pos'));
> >
> > Error in ==> spm_orthviews at 395 addcontexts(handles);
> >
> > Error in ==> spm_check_registration at 44
> > spm_orthviews('AddContext',handle(ij));
> >
> > Error in ==> spm_config_checkreg>dispims at 45 spm_check_registration(job);
> >
> > Error in ==> spm_jobman>run_struct1 at 1474 feval(prog,val);
> >
> > Error in ==> spm_jobman>run_struct1 at 1482 run_struct1(c.val{i});
> >
> > Error in ==> spm_jobman>run_struct1 at 1482 run_struct1(c.val{i});
> >
> > Error in ==> spm_jobman>run_job at 417 run_struct1(c);
> >
> > Error in ==> spm_jobman>serial at 2039 run_job(jobs);
> >
> > Error in ==> spm_jobman at 70 serial(varargin{2:nargin});
> >
> > ??? Error while evaluating uicontrol Callback
> >
> >
> >
> > ****************************
> >
> > The dimensions of the raw, as well as of the bias corrected image is
> > 512*512*320.
> >
> > Trying "spm_slice_vol" gives:
> >
> > ??? Error using ==> spm_slice_vol
> > Incorrect usage.
> >
> > The raw file is 160MB, the bias corrected 320MB.
> >
> >
> > Thank you very much for your help!
> >
> > Lucas
> >
> >
> > _______________________________________________________________________
> > Jetzt neu! Schützen Sie Ihren PC mit McAfee und WEB.DE. 30 Tage
> > kostenlos testen. http://www.pc-sicherheit.web.de/startseite/?mc=022220
>
________________________________________________________________________
Schon gehört? Bei WEB.DE gibt' s viele kostenlose Spiele:
http://games.entertainment.web.de/de/entertainment/games/free/index.html
|