Dear spmers:
I use MRIcro to open a set of Rcbf images from GE company¡¯s STARcam format(one group are patient,another is normal,one scan for each person). All the transverse image is normal, but all the coronal images like a broad ¡°Z¡± shape. The sagital images are all another strange separated shape. The size of the Rcbf image is about 2.0 Mb.
The header information in MRIcro is
Dimension size(mm) origin
X 128 3.24 0
Y 128 3.24 0
Z 64 1.00 0
Offset 4978 Scale 1.000
I continue to use SPM99 to prossess the images . in spatial step of normalization, i couldn¡¯t get the correct results(only process one person once a time) , Matlab stop iteself . I have submitted the error message below:
One kind of error message were:
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Subject 1: 3D CT Norm:
iteration 1: FWHM = 67.2 Var = 2034.53
iteration 2: FWHM = 6.187 Var = 1.63275e-005
iteration 3: FWHM = 4.043 Var = 2.74566e-006
iteration 4: FWHM = 2.715 Var = 3.54755e-007
iteration 5: FWHM = 3.403 Var = 1.78775e-007
iteration 6: FWHM = 2.027 Var = 4.29714e-008
iteration 7: FWHM = 0.919 Var = 2.15132e-009
iteration 8: FWHM = 2.368 Var = 1.10975e-008
iteration 9: FWHM = 0.5845 Var = 1.10359e-010
Warning: Matrix is close to singular or badly scaled.
Results may be inaccurate. RCOND = 1.074173e-016.
> In D:\ SPMs\spm99\spm99\spm_snbasis.m at line 126
In D:\ SPMs\spm99\spm99\spm_sn3d.m at line 771
In D:\ SPMs\spm99\spm99\spm_sn3d.m at line 534
iteration 10: FWHM = 0.5295 Var = 3.02684e-012
Warning: Matrix is close to singular or badly scaled.
Results may be inaccurate. RCOND = 2.860708e-018.
> In D:\ SPMs\spm99\spm99\spm_snbasis.m at line 126
In D:\ SPMs\spm99\spm99\spm_sn3d.m at line 771
In D:\ SPMs\spm99\spm99\spm_sn3d.m at line 534
iteration 11: FWHM = 0.7659 Var = 1.45939e-009
iteration 12: FWHM = 1.9 Var = 6.63593e-009
??? Error using ==> save
Variable 'formate\patient\TOMO14_DS_sn3d.mat' not found.
Error in ==> D:\SPMs\spm99\spm99\spm_sn3d.m
On line 788 ==> eval(['save ' matname ' mgc Affine Dims Transform MF MG -v4']);
Error in ==> D:\SPMs\spm99\spm99\spm_sn3d.m
On line 534 ==> spm_sn3d(subj(i).P,subj(i).matname,bb,Vox,...
??? Error while evaluating uicontrol Callback.
¡±-------
Another kind of error message(for part of patient) were:
------- ¡°
Warning: Matrix is singular to working precision.
> In D:\ SPMs\spm99\spm99\spm_affsub3.m (spm_affsub1) at line 440
In D:\ SPMs\spm99\spm99\spm_affsub3.m (spm_affsub2) at line 323
In D:\ SPMs\spm99\spm99\spm_affsub3.m at line 233
In D:\ SPMs\spm99\spm99\spm_sn3d.m at line 755
In D:\ SPMs\spm99\spm99\spm_sn3d.m at line 534
* - SPM99: spm_affsub3 --------------------------------------------
There is not enough overlap in the images to obtain a solution. Please check that your header information is OK.
----------------------------------------- 11:40:52 - 01/12/2001
??? Error using ==> spm_affsub3 (spm_affsub1)
There is not enough overlap of the images to obtain a solution
Error in ==> D:\ SPMs\spm99\spm99\spm_affsub3.m (spm_affsub2)
On line 323 ==> [alpha_t, beta_t, chi2_t, W(im,:)] = ...
Error in ==> D:\ SPMs\spm99\spm99\spm_affsub3.m
On line 233 ==> [params] = spm_affsub2(ifun,VG,VF,VW,VW2, Hold,samp,params,free,pdesc,gorder,mean0,icovar0);
Error in ==> D:\ SPMs\spm99\spm99\spm_sn3d.m
On line 755 ==> p1 = spm_affsub3('affine3',VG,VF,1,6,p1,VW,VW2);
Error in ==> D:\ SPMs\spm99\spm99\spm_sn3d.m
On line 534 ==> spm_sn3d(subj(i).P,subj(i).matname,bb,Vox,...
??? Error while evaluating uicontrol Callback.
¡±--------
i wonder whether the raw data have some problem. But the data provider told me her procedure to check the patient and normal is correct. Is there anyone coming across this kind of problem? Any suggestion is greatly appreciated.
greatly thanks.
hamming zhang Ph.D CAMS&PUMCH
EMAIL: [log in to unmask]
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