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Sharper Brain Scans Mostly Erased the Small Lesions
Three super-resolution methods improved detection over thick slices, but their dominant mistake was deleting real signal rather than inventing it.
Summary
Three super-resolution methods improved detection over thick slices, but their dominant mistake was deleting real signal rather than inventing it.
Researchers degraded one-millimeter FLAIR scans from 29 ADNI participants to simulated three- and five-millimeter acquisitions, reconstructed them with two learned methods and cubic interpolation, and compared lesion segmentation with expert annotations. Every reconstruction improved detection over the raw thick slice, but small real lesions were erased more often than false lesions were hallucinated, especially at greater thickness; ECLARE preserved the most small-lesion signal. This small retrospective simulation does not validate super-resolution for clinical diagnosis.
Why it matters
Three super-resolution methods improved detection over thick slices, but their dominant mistake was deleting real signal rather than inventing it.
Limits and context
- This small retrospective simulation does not validate super-resolution for clinical diagnosis.
Key claims
Three super-resolution methods improved detection over thick slices, but their dominant mistake was deleting real signal rather than inventing it.
Qualification: This small retrospective simulation does not validate super-resolution for clinical diagnosis.
Evidence: source-2026-08-08-014
Sources
- arXiv preprint 2608.06311arXiv · primary research
Corrections
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