Hi Cedric,

the base image looks bad. The reason could be a mis-registration. More likely though you have two time points that come from different subjects?

Best, Martin

On 09/02/2014 04:09 AM, Koolschijn, Cédric wrote:

Dear experts,

I'm performing a longitudinal analysis, and have done so before, but I encounter an error after running -base for one subject which I haven't seen before.

The cross surfaces of both timepoints look OK, but the base surface is seems to be shrunken for unknown reasons. I reran all steps, but with the same results. The log file also doesn't provide any useful information, no errors were reported.

Below, please find screenshots of the surfaces for each tp. tp1: https://www.dropbox.com/s/5cwksrzqyw9jxxo/n4t1.tif?dl=0 tp2: https://www.dropbox.com/s/858062gh1uwigo2/n4t2.tif?dl=0 base: https://www.dropbox.com/s/hutaarl7jvthwcy/n4base.tif?dl=0

Do you have any idea what caused the mess-up in -base, and how to fix this? It will be a lot of editing should this be done manually, so I'm hoping for a better option.

Many thanks! Best, Cédric

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