Hi Donald,

I used the toolbox but for some VOI I received the error "VOI is larger than dataset. Program will exit". When I checked the mask.hdr, there is indeed signal loss in some part of the VOI. Since there appear to be activated voxels in the remaining parts of the VOI, it looks like this error will come up even though only some voxels within the VOI are affected. Is there any way to get around this without choosing a different VOI? I looked at the timeseries_extract.m but could not figure how to do so. Also, would it be an issue to have VOIs of different sizes in different subjects? I am running PPI in native space but intend to normalize the con-maps afterwards.

Thank you for your help.

Regards,

Kim