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Hi,Xu, Do you have the SPM extension 'xjview'? You can save the result as a binary .img file using some button in File menu when you review the activation results using xjview. I hope it helps. Hongjian He On 6/23/07, Jiansong Xu <[log in to unmask]> wrote: > Peter: > > It works. It saved me a lot of troubles. Otherwise, I cannot image how to > combine them one by one. > > You are my hero, at least for today. > > Best Regards. > > Jiansong > > > > From: Peter LaViolette <[log in to unmask]> > > Date: Fri, 22 Jun 2007 13:28:53 -0400 (EDT) > > To: Jiansong Xu <[log in to unmask]> > > Cc: <[log in to unmask]> > > Subject: Re: [SPM] roi > > > > Hit build in marsbar instead of import. then select from image, and select > > your binarized image, and apply no function. I think that should do it. > > Pete > > > > > > On Fri, 22 Jun 2007, Jiansong Xu wrote: > > > >> Peter, Thanks again. > >> > >> It works. But, ... > >> > >> My plan is to use marsbar to calculate the mean BOLD signal changes within > >> the big ROI. When I imports this mask into marsbar, marsbar separate the > >> ROI into > 60 ROIs. It did exactly what I did not want to do at the first > >> step. Can you or anyone else provide a clue to calculate the mean BOLD > >> signal changes in this big ROI? > >> > >> Best > >> > >> Jiansong > >> > >> > >>> From: Peter LaViolette <[log in to unmask]> > >>> Date: Fri, 22 Jun 2007 12:49:36 -0400 (EDT) > >>> To: Jiansong Xu <[log in to unmask]> > >>> Cc: <[log in to unmask]> > >>> Subject: Re: [SPM] roi > >>> > >>> Hit results, grab the SPM.mat file, and select the contrast you want. > >>> Then in the lower right corner of the GUI there is a save button. Press > >>> it. You are then saving the glass brain values as an image. Because they > >>> are values you have to binarize it (1s and 0s) to create your ROI. > >>> Therefore you press imcalc, select the image you just saved, it prompts > >>> you for an equation, type in i1>0, which takes all the glass brain voxels > >>> that are above zero and changes them to 1. Then name the new image and > >>> you are all set. > >>> Pete > >>> > >>> On Fri, 22 Jun 2007, Jiansong Xu wrote: > >>> > >>>> Peter: > >>>> > >>>> Thanks. But, I didn't get it. Could you a little bit more detail (the > >>>> sequence of button pushes). > >>>> > >>>> Best > >>>> > >>>> Jiansong > >>>> > >>>> > >>>>> From: Peter LaViolette <[log in to unmask]> > >>>>> Date: Fri, 22 Jun 2007 12:14:16 -0400 (EDT) > >>>>> To: Jiansong Xu <[log in to unmask]> > >>>>> Cc: <[log in to unmask]> > >>>>> Subject: Re: [SPM] roi > >>>>> > >>>>> Plot the results, hit save, then do an imcalc selecting the image you > >>>>> saved, and use the equation i1>0 to binarize it. > >>>>> Pete > >>>>> > >>>>> On Fri, 22 Jun 2007, Jiansong Xu wrote: > >>>>> > >>>>>> Dear Friend: > >>>>>> > >>>>>> I'm using SPM2 and want to make a ROI consists of all the significant > >>>>>> voxels > >>>>>> of a contrast, which too can I use? > >>>>>> > >>>>>> Thanks > >>>>>> > >>>>>> Jiansong > >>>>>> > >>>>>> > >>>>>> > >>>> > >>>> > >>>> > >>>> > >> > >> > >> > >> > -- 何宏建, He Hongjian Biox laboratory of physics department, Zhejiang University. Zheda Road 38, Hang Zhou, China. 310027 Phone: 86-571-87952811