tag:blogger.com,1999:blog-1405968300258104460.post3078943975974789653..comments2024-03-27T01:18:24.341-04:00Comments on Andy's Brain Blog: AFNI Start to Finish PlaylistAndrew Jahnhttp://www.blogger.com/profile/16435706598096921650noreply@blogger.comBlogger5125tag:blogger.com,1999:blog-1405968300258104460.post-35967584925486800512017-11-22T10:35:46.299-05:002017-11-22T10:35:46.299-05:00Hey there,
AFNI does have a drawing tool that is ...Hey there,<br /><br />AFNI does have a drawing tool that is used for ROI analysis; go to Define Datamode -> Plugins -> Draw Dataset. Note that you will need a 3-button mouse (e.g., one with a wheel you can push down) in order to draw the ROI.<br /><br />-AndyAndrew Jahnhttps://www.blogger.com/profile/16435706598096921650noreply@blogger.comtag:blogger.com,1999:blog-1405968300258104460.post-22431898498661115672017-10-11T23:34:43.742-04:002017-10-11T23:34:43.742-04:00Thank you very very much!
Thank you very very much!<br />Anonymoushttps://www.blogger.com/profile/00009275590042541529noreply@blogger.comtag:blogger.com,1999:blog-1405968300258104460.post-66758952727993330302017-10-11T23:34:13.624-04:002017-10-11T23:34:13.624-04:00Hi, Andy,
Is there any drawing pen you can use in...Hi, Andy, <br />Is there any drawing pen you can use in AFNI? The reason I am asking is that I want to contour out the tumor on each slice and then extract the volume of the tumor (and possible acquire the coordinates of these tumor voxels). I remember doing this with FSL but not sure whether AFNI has the same tool? Anonymoushttps://www.blogger.com/profile/00009275590042541529noreply@blogger.comtag:blogger.com,1999:blog-1405968300258104460.post-76916693866520688362016-08-09T17:05:04.163-04:002016-08-09T17:05:04.163-04:00Hi there,
Yes, you can use synthetic datasets; se...Hi there,<br /><br />Yes, you can use synthetic datasets; several researchers use them to test whether certain tools can distinguish between signal and noise. However, I wouldn't base all of your research on that; it would be hard to say much about the brain with only simulated datasets.<br /><br />I haven't created fMRI datasets, so I don't know what a good range of values is. If you want to be in the range of most published fMRI studies, I would generate values between -2 and 2.<br /><br /><br />Good luck!<br /><br />-AndyAndrew Jahnhttps://www.blogger.com/profile/16435706598096921650noreply@blogger.comtag:blogger.com,1999:blog-1405968300258104460.post-1355580785205084152016-08-05T11:15:57.493-04:002016-08-05T11:15:57.493-04:00Hi Andrew,
I am very new in fMRI and in my researc...Hi Andrew,<br />I am very new in fMRI and in my research I am trying to find high performance solutions for fMRI problems using parallel computation techniques. I am wondering can I use synthetic fMRI datasets in my research rather than actual datasets? since I need to test my approaches on multiple fMRI datasets with varying size of voxels and multiple number of subjects (e.g. 5000 subjects). I am generating random float numbers between -6 to 6 as intensity of each voxel. Is it a good idea? if it is not is there any source for already preprocessed fMRI datasets for ver large number of subjects?<br />Thank youAnonymoushttps://www.blogger.com/profile/03990571857781714396noreply@blogger.com