 |
 |
Dear all, I'm using the new FSL5 distortion correction tools TOPUP/EDDY and I'm really impressed by these tools! However I'm getting a strange error using EDDY with my data I cannot understand or track - It's a segmentation error. I now try to explain as good as possible what happens: Command (the link to the corresponding data is further down): eddy --imain=all_images --mask=unwarped_T2_fw_brain_mask --acqp=acqparams.txt --index=index.txt --bvecs=bvec.txt --bvals=bval.txt --topup=my_topup_results --out=eddy_corrected_data -verbose Eddy reports: Reading images Loading prediction maker Evaluating prediction maker model ERROR:: Empty mask image Calculating parameter updates Segmentation fault I'm not sure what the Error "Empty mask image" means. However later on I get the segmentation fault - I'm not fully sure if there is something wrong with my txt files, which causes this error (I don't think so). Hardware environment: OS: Neuro Debian in a virtual machine Ram: 10gb (for the virtual machine), it should be enough, I monitored it in Linux and there wasn't a problem CPU: Core I7 If there is more information about the hardware needed - I will send it. Diffusion acquisition scheme: 150 DWIs, undersampled DSI, covering whole sphere, angular and radial, bmax 3000 [cid:image001.jpg@01CEC4F2.57C2D880] Example: This is the folder, containing all files when I run eddy and get the error: https://dl.dropboxusercontent.com/u/23778631/Preprocessing_EDDY_for_FSL_team.zip If you could help me or tell me how I can debug errors like that would be really great. Thank you so much Tim