BUG: Lesions in background or surrounded by darker tissue could cause… #1265
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… a divide by zero Fix this by checking lesion clusters for non-zero intensity. Also, for very small clusters, dilate by 2 voxels instead of 1, to improve the chance of finding suitable neighborhood voxels. If lesions cannot be filled, they are skipped and a warning is printed
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@ntustison @dorianps this is mostly a bug fix but I did add extra dilation for small lesions. The problem encountered by a user was that for small lesions near CSF, the immediate neighborhood may contain 0 valid (ie, brighter) voxels. So I added extra dilation in that case to have a slightly larger pool of voxels to choose from. Does that sound OK? |
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Unfortunately I have not used LesionFilling that much. I created a separate approach based on JIF and a number of T1w from controls (starting with a symmetric left right flip to fill first with the subject itself). So, I can't say if this is good or not. From what you describe @cookpa sounds ok. |
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OK thanks! |
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… a divide by zero
Fix this by checking lesion clusters for non-zero intensity. Also, for
very small clusters, dilate by 2 voxels instead of 1, to improve the
chance of finding suitable neighborhood voxels.
If lesions cannot be filled, they are skipped and a warning is printed
Fixes #1258