Hi IvanaWould you by any chance have had time to work on the interleaved feature, it would be so great to demonstrate intra-volume movement and spin history effects. I have tried to look at the code myself, but since I am not even close to being a C++ user I did not get very far.BestTorbenTorben Ellegaard LundAssistant Professor, PhDThe Danish National Research Foundation's Center for Functionally Integrative Neuroscience (CFIN)Aarhus UniversityAarhus University HospitalBuilding 30Noerrebrogade8000 Aarhus CDenmarkPhone: +4589494380Fax: +4589494400On 14/08/2007, at 18.07, Ivana Drobnjak wrote:Hello Torben :),thanks. There is no interleaved. Ascending or descending is defined as "slice acquisition order " which you will find as part of the "Pulse sequence" tab. There are two options: "+" (which is bottom to top of the head if the slice selection is in z-direction) and "-" (which is top to bottom).Hopefully interleaved will be there soon.All the best,IvanaOn 14 Aug 2007, at 16:49, Torben Ellegaard Lund wrote:Dear FSL'sI have just had a quick look at the GUI of POSSUM. It looks great, but I could not find any info on slice order i.e. interleaved, ascending or descending. It is probably described in the MRM paper, but is it possible to change the order, and which one is being used by default?BestTorben Ellegaard Lund