COVID19, Pneumonia and Normal Chest X-ray PA Dataset

The dataset is organized into 3 folders (covid, pneumonia , normal) and metadata.csv which contain chest X-ray posteroanterior (PA) images. X-ray samples of COVID-19 were retrieved from different sources for the unavailability of a large specific dataset. First, 613 X-ray images of COVID-19 cases were collected from the following websites: GitHub [1,2], Radiopaedia [3], The Cancer Imaging Archive (TCIA) [4], and the Italian Society of Radiology (SIRM) [5]. Then, instead of data being independently augmented, a dataset containing 912 already augmented images was collected from Mendeley [6]. Finally, 1525 images of pneumonia cases and 1525 X-ray images of normal cases were collected from the Kaggle repository [7] and NIH dataset [8]. A total of 4575 samples were used in the experiment, where 1525 samples were used for each case. References: [1] http://arxiv.org/abs/2003.11597 [2] https://github.com/agchung [3] https://radiopaedia.org/ [4] https://www.cancerimagingarchive.net/ [5] https://www.sirm.org/en/category/articles/covid-19-database/ [6] https://data.mendeley.com/datasets/2fxz4px6d8/4 [7] https://www.kaggle.com/paultimothymooney/chest-xray-pneumonia [8] https://www.kaggle.com/nih-chest-xrays/data本数据集共分为3个分类文件夹（covid、pneumonia、normal）以及metadata.csv文件，内部存储胸部X射线后前位（posteroanterior, PA）图像。由于缺乏大规模专用数据集，新冠病毒肺炎（COVID-19）的X射线影像样本从多渠道采集。 具体采集流程如下：首先，从GitHub[1,2]、Radiopaedia[3]、癌症影像档案库（The Cancer Imaging Archive, TCIA）[4]以及意大利放射学学会（Italian Society of Radiology, SIRM）[5]四个平台，收集了613例新冠病例的胸部X射线图像；其次，未独立开展数据增强，而是从Mendeley[6]获取了包含912张已完成增强处理的影像数据集；最后，从Kaggle仓库[7]与美国国立卫生研究院（National Institutes of Health, NIH）数据集[8]中，分别采集了1525张肺炎病例的X射线图像与1525张健康对照病例的X射线图像。 本实验共使用4575个影像样本，每一类病例各占1525个样本。 参考文献： [1] http://arxiv.org/abs/2003.11597 [2] https://github.com/agchung [3] https://radiopaedia.org/ [4] https://www.cancerimagingarchive.net/ [5] https://www.sirm.org/en/category/articles/covid-19-database/ [6] https://data.mendeley.com/datasets/2fxz4px6d8/4 [7] https://www.kaggle.com/paultimothymooney/chest-xray-pneumonia [8] https://www.kaggle.com/nih-chest-xrays/data