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Mickael, thank you very much for these precisions. My only problem is that even in the DICOM hdr fields, I cannot identify one of these fields corresponding to this information. Maybe I did not identify this information well. Thanks, Best regards, H 2012/1/23 Michael Harms <[log in to unmask]> > Hi Harold, > I don't think that there is any way for you to distinguish between the > possibility of sequential vs. interleaved acquisitions simply based on > the ordering of the voxel coordinates. (Because interleaved > acquisitions get un-interleaved in terms of the slice ordering when the > DICOMs are written). So, you'll need to look in the DICOM fields > themselves to know whether the acquisition was interleaved or > sequential. > > cheers, > -MH > > > On Mon, 2012-01-23 at 17:52 +0100, Harold Mouras wrote: > > Thank you very much for these quick and kind responses ! > > When moving the crosshair from the bottom to the upper side of the > > brain for example on the saggital plan, this third coordinate goes > > from 0 to 28 (we hade 28 slices). So, simply, we acquired sequentially > > from the bottom to the upper part of the brain, am I right....? > > > > > > 2012/1/23 John Ashburner <[log in to unmask]> > > Just to add something to my previous response... > > > > You can see which is the first slice in an image via the > > Display > > button. You can identify the first slice by clicking on the > > corners > > of the volume and looking at the the voxel coordinates. The > > third > > value is the slice number of that point. > > > > Best regards, > > -John > > > > On 23 January 2012 16:09, Harold Mouras <harold.mouras@u- > > picardie.fr> 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) > > > > > > ------------------------------------------------------------------------- > > > > > > > > > > > > > > > -- > > 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) > > ------------------------------------------------------------------------- > > > > > > -- Harold Mouras Maître de Conférences en Neuroscience Editeur "Socioaffective Neuroscience & Psychology<http://www.socioaffectiveneuroscipsychol.net> " ------------------------------------------------------------------------- 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<http://sites.google.com/site/lnfpamienssite/the-team/chercheurs---enseignants-chercheurs/harold-mouras>/ Lab page (Amiens) <http://sites.google.com/site/lnfpamienssite/> / Lab page (Lille) <http://lnfp.dr18.cnrs.fr/> In english: Website personnal page<http://translate.google.fr/translate?hl=fr&sl=fr&tl=en&u=http%3A%2F%2Fsites.google.com%2Fsite%2Flnfpamienssite%2Fthe-team%2Fchercheurs---enseignants-chercheurs%2Fharold-mouras>/ Lab page (Amiens)<http://translate.google.fr/translate?hl=fr&sl=fr&tl=en&u=http%3A%2F%2Fsites.google.com%2Fsite%2Flnfpamienssite%2F>/ Lab page (Lille)<http://translate.google.fr/translate?hl=fr&sl=fr&tl=en&u=http%3A%2F%2Flnfp.dr18.cnrs.fr%2F> -------------------------------------------------------------------------