Table 2.

Available radiography datasets to detect COVID-19. Here, NC means COVID-19 negative

Sl. No.	Dataset	Date of publication	Modality	Class	Description	Works on the dataset	Highest accuracy
1	COVID-19 Image Data Collection [26]	February 15, 2020a	Chest X-ray CT scan	COVID-19	462 X-ray 80 CT scan	Apostolopoulos et al. [55] Narin et al. [76] Minaee et al. [36] LV et al. [48] Punn et al. [49]	99.18% [55]
2	Actualmed COVID-19 Chest X-ray Dataset initiative [59]	April 20, 2020a	Chest X-ray	COVID-19	238 X-ray	–	–
3	Figure1 COVID-19 Chest X-ray Dataset Initiative [60]	April 3, 2020a	Chest X-ray	COVID-19	55 X-ray	–	–
4	COVID-19 Radiography Dataset [61]	March 28, 2020	Chest X-ray	COVID-19 Normal Pneumoinia	219 COVID-19 1341 Normal 1345 Pneumonia	Chowdhury et al. [31] Bassi et al. [32] Zhang et al. [77]	98.3% [31]
5	COVIDx [39]	March 19, 2020a	Chest X-ray	COVID-19 Pneumonia Normal	473 COVID-19 5459 Pneumonia 7966 Normal	Ucar et al. [38] Farooq et al. [34] Wang et al. [39] Karim et al. [35]	98.26% [38]
6	Augmented COVID-19 X-ray-Images Dataset [66]	March 26, 2020	Chest X-ray	COVID-19 NC (COVID Negative)	912 COVID-19 912 NC	Alqudah et al. [78]	95.2%
7	Italian SIRM COVID-19 Database[62]	March 3, 2020	Chest CT scan	COVID-19	115 COVID-19 cases	Apostolopoulos et al. [55] Bassi et al. [32] Yamac et al. [40] Apostolopoulos et al. [79] Hall et al. [33]	99.18% [55]
8	Radiopaedia[67]	September 8, 2020b	Chest X-ray CT scan	COVID-19	135 COVID-19 485 Pneumonia 153 Normal	Apostolopoulos et al. [55] Yamac et al. [40] Hall et al. [33]	99.18% [55]
9	COVID-CT Dataset [68]	March 28, 2020a	Chest CT scan	COVID-19 Normal	349 COVID-19 463 Normal	He at al. [80]	86% [80]
10	Thread reader [72]	March 28, 2020	Chest X-ray	COVID-19	50 COVID-19 cases	Yamac et al. [40]	95.90% [40]
11	Extensive COVID-19 X-ray and CT Chest Images Dataset [69]	June 13, 2020	Chest X-ray CT scan	COVID-19 Normal	9471 COVID 8128 NC	-	-
12	COVID-19 CT segmentation dataset [70]	April 13, 2020	Chest CT scan	Positive (COVID-19) Negative	373 Positive 456 Negative	Chen et al. [81]	89% [81]
13	COVID-19 X-ray Images [71]	May 15, 2020	Chest X-ray CT scan	COVID-19 Streptococcus Other	309 COVID 17 Streptococcus 47 Other	-	-
14	COVID-19 BSTI Imaging Database [73]	September 8, 2020b	Chest X-ray CT scan	COVID-19 Positive	59 COVID-19 cases	Maghdid et al. [82]	94.1% [82]
15	Coronacases.org [74]	September 8, 2020b	Chest CT scan	COVID-19 cases	10 COVID-19 Positive cases	-	-
16	Eurorad.org [75]	September 8, 2020b	Chest X-ray CT scan	COVID-19 Positive	39 COVID-19 cases	-	-

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