Strange looking result images

Submitted by Lisa_Kr on Sun, 12/13/2015 - 11:31

Hello,

I have a question regarding my resulting images. They are ARWSCF data. I did quality check after every step and up until the covariate regression they look fine but after it they become very strange looking. I tried to play around with the settings (to use another subject, to use the segmentation masks instead of the SPM ones, with and without the global signal regression etc etc) but always ended up with an image like this. Is it normal? Should it look like this? Or is there an error somewhere?

 

Thanks a lot!!

 

Lisa

AttachmentSize
Image icon norm_ncr_segm_masks.png143.77 KB
Image icon norm_ncr_spm.png126.2 KB

Forums:

Lisa_Kr

Sun, 12/13/2015 - 12:50

and also: even when I choose to use the segmenation masks I still see the following line during the matlab processing:

"Resample Masks (home/lisak/DPABI_V1.3_150710/Templates/BrainMask_05_91x109x91.img) to the resolution of the functional image

Resample Masks (home/lisak/DPABI_V1.3_150710/Templates/CsfMask_07_91x109x91.img) to the resolution of the functional image

Resample Masks (home/lisak/DPABI_V1.3_150710/Templates/WhiteMask_09_91x109x91.img) to the resolution of the functional image"

Why does it still use the predefined masks if I chose my segmentation masks?

 

Thanks!

YAN Chao-Gan

Mon, 12/14/2015 - 00:46

Hi,

Please see http://rfmri.org/faq #4. Why the data after nuisance regression looks so strange (distorted)?

If you choose segmentation masks, the "CsfMask_07_91x109x91.img" will be resampled but never be used.

Best,

Chao-Gan

Lisa_Kr

Mon, 12/14/2015 - 14:02

Dear Chao-Gan,

thank you for your answer! 

Best,

Lisa