CTICasesCT reconstruction kernel artifact
Imaging findings
Chest CT reconstructed with a very high spatial frequency algorithm (B80 kernel) demonstrates excessive image noise that falsely simulates reticulation and interstitial fibrosis.
Key takeaways
Using excessively sharp reconstruction kernels (designed for thick slices) on thin-section CTs creates severe noise artifacts that can mimic or exaggerate fibrotic lung disease. Selection of appropriate soft/medium kernels is essential.
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