There is space in the NIfTI headers for slice timing information, but
as I did not see a way to reliably obtain this information, I do not
attempt to encode the information during the file format conversion.
It's one of those pieces of information that you need to get from your
physicists/radiographers. Note also that the order that the slices
are entered into the file will depend on the orientation of each
slice. The ordering is chosen so that the left/right handedness of
the coordinate system is as required by the setting in
spm_flip_analyze_images.m.
Best regards,
-John
On 23 January 2012 16:09, Harold Mouras <[log in to unmask]> wrote:
> Dear SPM list,
> I am beginning to work on data acquired in a new experiment. When looking at
> DICOM data under osiriX for example, data appeared to have been acquired
> sequentially from the bottom of the brain. A very first question would be
> how to be sure of this parameter when looking at the DICOM header ?
> Moreover, I wondered if the conversion to nifti could have an influence on
> this in order to plan the slice timing parameters I'll apply in my
> preprocessing steps. Once the conversion is done, is there any information
> regarding this parameter in the nifti file header ?
> Thank you so much in advance,
> Best regards,
> Harold
>
>
> --
> Harold Mouras
> Maître de Conférences en Neuroscience
> Editeur "Socioaffective Neuroscience & Psychology"
>
> -------------------------------------------------------------------------
> Laboratoire de Neurosciences Fonctionnelles et Pathologies
> Faculté de médecine
> 3, rue des Louvels
> 80036 Amiens, France
> Téléphone: +33 9 50 48 30 10
> [log in to unmask]
> In french: Website personnal page / Lab page (Amiens) / Lab page (Lille)
> In english: Website personnal page / Lab page (Amiens) / Lab page (Lille)
> -------------------------------------------------------------------------
>
|