Hi,
one instance where the number of slices would actually worry me is
during slice timing, as then the timing assumed by the algorithm is
wrong. If that actually makes a difference later on, I cannot say, but I
agree with Michael about simply running the script again.
Cheers,
Marko
Michael T Rubens wrote:
> if it was me i would just reprocess the data. still, if its the same for
> all subjects it probably just means the last 2 slices were not included,
> which means that you just won't have data for those slices, but the rest
> of the brain data should be fine.
>
> cheers,
> michael
>
> On Sun, Jan 23, 2011 at 3:26 PM, Ti Da <[log in to unmask]
> <mailto:[log in to unmask]>> wrote:
>
> Sorry, I intended to acquire 32 slices and I collecetd 32 slices for
> all my participants. It is just a typo that I have in my scripts
> where I state in my scripts that I have 30 instead of 32
> slices. I had presumed that if my scripst we not compatiable with my
> data that they would not run and that an error message would come up
> but this was not the case, so I am worried that my analysis results
> are innacurate as this typo occured early in the analysis that it
> will affect end result. Let me know if I still have not explained
> myself.
>
> Tim
> ------------------------------------------------------------------------
> From: [log in to unmask] <mailto:[log in to unmask]>
> Date: Thu, 20 Jan 2011 23:07:08 -0800
> Subject: Re: [SPM] number of slices-analysis
> To: [log in to unmask] <mailto:[log in to unmask]>
> CC: [log in to unmask] <mailto:[log in to unmask]>
>
>
> you should give more details. Do you mean you accidentally acquired
> 30 instead of 32 for some people, or 32 was acquired but you only
> ended up with 30. if the latter, at what stage did it occur? you
> can't really expect help without giving at least a minimal amount of
> info.
>
> Cheers,
> Michael
>
> On Thu, Jan 20, 2011 at 8:32 PM, Ti Da <[log in to unmask]
> <mailto:[log in to unmask]>> wrote:
>
> Hi
>
> I have run an analysis on SPM 8 using scripts. Everything worked
> successfully. I checked back on my script and noticed that
> instead of having 32 slices I have 30 slices. Everything else is
> correct (TR etc.) What implicatiosn does this have for my
> results. Would I have to redo everything?
>
> Tim
>
>
>
>
> --
> Research Associate
> Gazzaley Lab
> Department of Neurology
> University of California, San Francisco
>
>
>
>
> --
> Research Associate
> Gazzaley Lab
> Department of Neurology
> University of California, San Francisco
--
____________________________________________________
PD Dr. med. Marko Wilke
Facharzt für Kinder- und Jugendmedizin
Leiter, Experimentelle Pädiatrische Neurobildgebung
Universitäts-Kinderklinik
Abt. III (Neuropädiatrie)
Marko Wilke, MD, PhD
Pediatrician
Head, Experimental Pediatric Neuroimaging
University Children's Hospital
Dept. III (Pediatric Neurology)
Hoppe-Seyler-Str. 1
D - 72076 Tübingen, Germany
Tel. +49 7071 29-83416
Fax +49 7071 29-5473
[log in to unmask]
http://www.medizin.uni-tuebingen.de/kinder/epn
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