# \#nlst

**URL:** https://discourse.canceridc.dev/tag/nlst/83.md

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## [Aligning Segmentation and CT slices for feature extraction via Pyradiomics](https://discourse.canceridc.dev/t/aligning-segmentation-and-ct-slices-for-feature-extraction-via-pyradiomics/625)

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**Author:** [@Nav\_Malhotra](https://discourse.canceridc.dev/u/Nav_Malhotra)\
**Replies:** 4\
**Last updated:** [August 12, 2026, 1:56pm UTC](https://discourse.canceridc.dev/t/aligning-segmentation-and-ct-slices-for-feature-extraction-via-pyradiomics/625 "2026-08-12T13:56:48Z")

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Currently I am trying to extract higher order and texture based features from NLST chest CTs from their downloaded DICOM format. I was having trouble properly formatting the data for insertion into a feature extraction …

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## [NLST Data Completeness: Missing 28 CT Cancer Patients](https://discourse.canceridc.dev/t/nlst-data-completeness-missing-28-ct-cancer-patients/765)

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**Author:** [@kosmasgal](https://discourse.canceridc.dev/u/kosmasgal)\
**Replies:** 7\
**Last updated:** [December 17, 2025, 2:52pm UTC](https://discourse.canceridc.dev/t/nlst-data-completeness-missing-28-ct-cancer-patients/765 "2025-12-17T14:52:05Z")

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Hi everyone, I am working with the NLST collection in IDC and have performed a detailed completeness check against the NLST User Guide and original publications. I am using the idc\_index package to work with the data, m…

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## [NLST clinical data notebook question](https://discourse.canceridc.dev/t/nlst-clinical-data-notebook-question/642)

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**Author:** [@kirbyju](https://discourse.canceridc.dev/u/kirbyju)\
**Replies:** 3\
**Last updated:** [November 19, 2024, 8:45pm UTC](https://discourse.canceridc.dev/t/nlst-clinical-data-notebook-question/642 "2024-11-19T20:45:24Z")

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I was just looking over your notebook at IDC-Tutorials/notebooks/collections\_demos/nlst\_clinical\_data.ipynb at master · ImagingDataCommons/IDC-Tutorials · GitHub. This does a really nice job making it easy to track do…

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## [NLST images a subset of those in CDAS?](https://discourse.canceridc.dev/t/nlst-images-a-subset-of-those-in-cdas/621)

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**Author:** [@Ahmed\_Hosny](https://discourse.canceridc.dev/u/Ahmed_Hosny)\
**Replies:** 2\
**Last updated:** [August 22, 2024, 11:18pm UTC](https://discourse.canceridc.dev/t/nlst-images-a-subset-of-those-in-cdas/621 "2024-08-22T23:18:48Z")

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I know that IDC hosts a subset of the NLST clinical data (with the full clinical data in CDAS). I was wondering if the IDC imaging data is also a subset of those in CDAS. Thanks!