[caret-users] constantly getting either Error in hind brain segmentation or segmentation fault

[Krishna Srihasam]

Hi Everyone,

I am new to CARET . As a first project, I've been trying to segment a 
hemisphere in Caret 5.5 ( using the instructions from Caret 5 tutorial : 
Segmentation, Flattening, and Registration).

I have a 0.5mm isotropic anatomical image of a macaque in Analyze format 
and where ever I set the gray and white peaks I  get a hindbrain  
segmentation error. If I disable disconnect hind brain I get a 
segmentation fault repeatedly.

I have tried several different combinations of Gray and White peak values:

Gray 34, White 38;
Gray 38, White 42;
Gray 43, White 46;
 
All these peak values give a Hindbrain Error and disabling Disconnect 
Hindbrain in SureFit Segmentation operations  gives me a segmentation 
fault.

I tried using Gray 29, White 61 as peaks.  The segmentation went through 
when i set low threshold for hindbrain. But the output after this had 
most of occipital lobe missing.

Any help me would be greatly appreciated.

Thanks in advance.
regards,
Krishna.