We built a large lung CT scan dataset for COVID-19 by curating data from 7 public datasets. Three of these datasets had shared COVID-19 lesion masks. This dataset merges the COVID-19 lesion masks and their corresponding frames of these 3 public datasets, with 2729 image and ground truth mask pairs. All different types of lesions are mapped to white color for consistency across datasets.

Acknowledgements

• S. Morozov et al., "MosMedData: Chest CT Scans With COVID-19 Related Findings Dataset," arXiv preprint arXiv:2005.06465, 2020.
• M. Jun et al., "COVID-19 CT Lung and Infection Segmentation Dataset," Zenodo, Apr, vol. 20, 2020.
• "COVID-19." 2020. [Online] http://medicalsegmentation.com/covid19/ [Accessed 23 December, 2020].