Hi, I'm currently running the latest developmental release for RedHat 9, but I seem to have some problems concerning the intesity-normalization. Unfortunately, my images have some intensity inhomogenities, but the first normalization-step seems to take care of most of these. However, some regions inside the white matter has a somewhat high value, for example 130 -140. These regions are not included in the white matter when I run the recon-all -segmentation program. Adding control-points to these areas does not work, obviously, since only values lower than 110 are considered when the normalization-step is re-runned. (right?) Is there any way to include these areas in my final white matter whithout manually drawing them onto the wm.mgz -volume? For instance raising the threshold for wm-segmentation? If so, would this produce any kind new artifacts which I need to be aware of?

Thanks,

Martin Ystad Medical Student University of Bergen Institute of Biomedicine Jonas Lies vei 91, 5009 Bergen, Norway.