Segmentation leaves empty vertical lines

Hi all,

I am having trouble with segmenting an MRI. I am using the ‘draw’ tool in the ‘Segment editor’. I draw the outline you can see in this picture:
draw_outline

And when I press enter, this is what I get:
draw_segmentation

As you can see, there are unsegmented vertical lines that should be filled. In addition, some filled vertical lines show up in the next slice. I segmented one slice every three slices and this is what I get in the axial plane (see green lines on the left):
axial

My guess is that this error is related to the orientation of the slices or something like that. Can someone help?

Thanks!

Alessandro

Have a look at this topic, it should solve this for you:

Steve,

that fixed the problem, thanks a lot for your help!

Alessandro