VolBrain does not accept 32 bit 0.8 mm resolution MPRAGE.nii.gz

[linnmanlab]

Describe the bug
Brain AssemblyNet and BrainAge accept a submitted mprage, but the results page do not contain anything, when I open the results link, i get:

(404) Not Found
File report.csv doesn't exists in job 1668088

I submitted the same mprage to VolBrain2, and that gave me an error: job failed

Tried other mprages that look good in a viewer, in the same format, they all fail.

The mprage is quite large, 59 to 65 Mb nii.gz files that are 0.8x0.8x0.8 mm resolution. Looking at the data encoding, they are in 32 bit real*, whereas prior data that worked well was in 1x1x1 mm, encoded as 16 bit int S*

Configuration (please complete the following information):

• OS: [linux]
• Browser [e.g. chrome

Additional context
thanks!

[linnmanlab]

Update: The MPRAGE had been corrected for field inhomogeneity to make sure that spinal cord thickness was correct at the edge of the field of view. Using the raw, uncorrected data, with 16 bit encoding, works

thanks for a neat tool
Clas

[pierrickvolbrain]

The job indeed failed due to your preprocessing. The bug from our side is that we did not detect the failure (it is due to nan in your image). The issue is from your side, your preprocessing introduced incompatible format (N4 failed) or nan in the image. As mentioned on the submit page, please sent image without any preprocessing.