Hello DTIPrep team,

Thank you for such a wonderful tool, I've been using it for many years. I'm currently running DTIPrep1.2.4(Linux) and am getting the following error message below, which results in a QC output that is missing the averaged b0 image that I request in my protocol (so the output contains only DWIs).

Interlace-wise Check Artifacts:
Gradient#: AngleX AngleY AngleZ TranslationX TranslationY TranslationZ Metric(MI) Correlation
0 0.005173 0.019200 0.006233 0.067178 0.026310 1.494784 0.260701 0.851486
20 -0.013550 -0.004478 -0.004047 -0.023368 0.108741 1.503283 0.259852 0.855707
Single b-value DWI without a b0/baseline!


The input contains two b0s, such as displayed in my bval table below...

0
1000
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0
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According to the QCReport.txt, the first b0 has an Interlace-wise artifact, so it's being excluded, and so obviously cannot be averaged with the other b0 image (no reported artifacts). So just to make sure, is this why I get the error message above? I was hoping that the baseline averaging option would be automatically ignored if there is only one good b0 gradient remaining, but is this not the case? (the QC output contains only DWIs). Since I'm batching this protocol xml across many subjects (some which have both good b0s, and some which may have one of the b0s corrupted), is there a handy way I could keep the baseline average option and have it ignore if there's only 1 good b0?

The other source of my confusion is that the XMLQCResult.xml (will be attached in another message following) says that the Interlace-wise is fine (Value=INCLUDE), but the QC_Index=-1 which means exclude, so if it's being excluded then why would Value=INCLUDE?

Another apparent mismatch is that the QCReport.txt says that gradient #20 has Interlace-wise artifact, but the XMLQCResult.xml says that gradient #20 is fine (Value=INCLUDE, QC_Index=18)...why?

Thanks so much,
Micah

See previous message, here's the XMLQCResult attached