Improve RTSTRUCT contour slice matching#910
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wahln
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May 29, 2026
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I made some minor revisions to code style, but other than that it looks really good and i will merge as soon as the tests pass.
Codecov Report❌ Patch coverage is Additional details and impacted files@@ Coverage Diff @@
## dev #910 +/- ##
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+ Coverage 54.79% 54.83% +0.03%
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Files 320 321 +1
Lines 20548 20568 +20
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+ Hits 11260 11278 +18
- Misses 9288 9290 +2 ☔ View full report in Codecov by Sentry. |
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Bug description
RTSTRUCT contours close to CT slice boundaries can be incorrectly omitted during DICOM import or contour voxelization. The previous sanity check only compared the contour z-position against the minimum and maximum CT slice positions, instead of checking whether the contour plane intersects the physical CT slice slab.
Approach
This PR centralizes RTSTRUCT contour-to-CT slice matching in
matRad_findRtssContourSlicesInCt.The helper matches a contour z-position against the CT z-axis using
ct.dicomInfo.SliceThickness, and is used consistently in:matRad_importDicomRtssmatRad_convRtssContours2IndicesContours outside the available CT volume are omitted with a warning. Valid contours near slice boundaries are accepted and voxelized on the matching CT slice.
No new user-facing parameters, external dependencies are introduced.
Validation
matRad_runTests('test/dicom/test_rtssContourSliceMatching.m')