# National Lung Screening Trial (NLST)

## License
**CC BY 4.0**  
[Creative Commons Attribution 4.0 International License](https://creativecommons.org/licenses/by/4.0/)

## Citation
Paper BibTeX:
```bibtex
@article{national2011reduced,
  title={Reduced lung-cancer mortality with low-dose computed tomographic screening},
  author={National Lung Screening Trial Research Team},
  journal={New England Journal of Medicine},
  volume={365},
  number={5},
  pages={395--409},
  year={2011},
  publisher={Mass Medical Soc}
}
```

Dataset:

```bibtex
National Lung Screening Trial Research Team. (2013). Data from the National Lung Screening Trial (NLST) [Data set]. The Cancer Imaging Archive. https://doi.org/10.7937/TCIA.HMQ8-J677
```


## Dataset description

The NLST investigated whether low-dose CT screening could reduce lung cancer mortality in high-risk individuals. Between 2002–2004, 53,454 participants were randomized to three annual screenings with either low-dose CT or chest radiography. This dataset includes low-dose CT scans from 26,254 subjects and histopathology images from 451 subjects, enabling research on early detection and screening efficacy.

**Number of CT volumes**: 7172

**Contrast**: Low-dose, non-contrast

**CT body coverage**: Chest

**Does the dataset include any ground truth annotations?**: No

**Original GT annotation targets**: -

**Number of annotated CT volumes**: -

**Annotator**: -

**Acquisition centers**: 33 medical centers across the United States

**Pathology/Disease**: High-risk individuals screened for lung cancer

**Original dataset download link**: https://www.cancerimagingarchive.net/collection/nlst/

**Original dataset format**: DICOM