Dear Marco,
run the following code and select an image from a subject where slice
timing crashes:
v = spm_vol(spm_select(1,'image'));
v.dim
Does the number of slices you entered in the interface matches the third
number displayed?
Best regards,
Guillaume.
Hubert, Marco wrote:
> Dear Camille,
>
> Thanks for your quick answer. The problem is for some participants it works for some not. Isnt this a data aquisition failure?
>
> Best Marco
>
>
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> -----Ursprüngliche Nachricht-----
> Von: SPM (Statistical Parametric Mapping) [mailto:[log in to unmask]] Im Auftrag von Camille Maumet
> Gesendet: Freitag, 19. März 2010 13:51
> An: [log in to unmask]
> Betreff: Re: [SPM] Wrong TR?
>
> Hi Marco,
>
> I had a similar problem in SPM5 : I specified a TR of "3" and during slice timing the TR displayed was different, I also got the same error message as you did. I then realised that the slice order I had indicated was wrong (it was [1:2:24 2:2:24] for interleaved data while my images were 36 slices). Maybe you could check that you correctly specified this parameter. This message
> (https://www.jiscmail.ac.uk/cgi-bin/wa.exe?A2=ind0712&L=SPM&P=R35003&D=0)
> from the mailing list also mention that this error can arise if the number of slices is not correctly specified.
>
> Hope this helps,
>
> Camille
>
> --
> Camille MAUMET
>
> Unité/Projet VisAGeS U746
> IRISA-INRIA Rennes
> Campus de Beaulieu
> 35042 Rennes Cedex
> France
>
> [log in to unmask]
>
>
>
> Hubert, Marco wrote:
>>
>>
>> Hello,
>>
>> Sorry for bothering i am struggling with spm8 etc.
>>
>> I have the following error message:
>>
>> SPM8: spm_slice_timing (v2696) 13:16:42 - 19/03/2010
>> ======================================================================
>> ==
>> Your TR is 3.3
>> Failed 'Slice Timing'
>> Improper assignment with rectangular empty matrix.
>> In file "C:\Programme\MATLAB\R2008b\spm8\spm_slice_timing.m" (v2696),
>> function "spm_slice_timing" at line 233.
>> In file "C:\Programme\MATLAB\R2008b\spm8\config\spm_run_st.m" (v2312),
>> function "spm_run_st" at line 25.
>>
>>
>> I am wondering because within my batch i put a TR value of 3 in it.
>>
>> So where lies the failure... In my batch or within the data aquisition?
>>
>> Best and thank you in advance
>>
>> Marco
>>
>
>
--
Guillaume Flandin, PhD
Wellcome Trust Centre for Neuroimaging
University College London
12 Queen Square
London WC1N 3BG
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