This app will quickly check the dwi image to see if any bvecs directions needs to be flipped. The algorithm finds bvecs that are pointing toward certain direction and find the volume slice within 4D DWI data and see how many image slices indeed seems to contain features that are orthogonal to the bvecs directions. Inconclusive output from this App usually means you have some data quality issue with your dwi.
If only y/z direction shows a flip (for example), I should display a note like following
WARNING: The algorithm could not determine if bvecs is flipped or not. This normally happens when you have some data quality issue, or your image is too tilted.
If only y/z direction shows a flip (for example), I should display a note like following
WARNING: The algorithm could not determine if bvecs is flipped or not. This normally happens when you have some data quality issue, or your image is too tilted.