Table 2.

Dataset of CT image for different sources

Authors	No. of images	Image categories		CT Image capturing parameters	Data sources	Results
Cai et al. [30]	99	Moderate	25	• Automatic tube current • Tube Voltage 120kVp • Position is supine • Collimation 0.725 mm • Reconstruction 1 mm	First affiliated hospital at Zhejiang University School of Medicine	92.7
		Severe	47
		Critical	27
Gao et al. [45]	2870	COVID-19	1008	• Automatic tube current (120-240 mA) • Tube voltage 120kv • Slice thickness 5 mm to 6 mm • Detector 64 mm Iterative reconstruction	Not reported	97.71
		non-COVID-19	1862
Budak et al. [56]	305	COVID-19	249	• Tube voltage 120kv • Slice thickness 1 mm • Detector 64 mm Pitch 0.625 mm	Ethics Committees of Shanghai Public [95]	72%
		Pneumonia	56
Ying et al. [96]	1485	COVID-19	88	• Tube voltage 120kv • Slice thickness 5 mm • Rotation time 0.35 s • Pitch 0.75 mm Spacing 10 mm	Renmin Hospital of Wuhan University[96]	99%
		Healthy	86
		Others	1311
Wang et al. [97]	216	COVID-19 positive	110	Slice thickness range 1.25–5 mm	Data taken from two China hospital and one USA	75%
Zhang et al. [98]	2460	COVID-19	2215	• Automatic tube current 145mAs • Tube voltage 120kv • Slice thickness 0.625 mm • After reconstruction 10 mm	Huoshenshan Hospital in Wuhan from February 11 to March 16, 2020	91%
		Pneumonia	245
Ghomi et al. [99]	96	COVID-19	51	• Tube voltage 120kv • Slice thickness 1.5 mm • Collimation 0.75 mm Lung window width 1000 to 1500HU	Data taken from three expert radiologists [99]	95.4%
		Healthy	44
Shan et al. [100]	249	COVID-19	249	• Automatic tube current 180-400mAs • Tube voltage 120kv • Slice thickness 5 mm Collimation 0.625 mm	From Shanghai, china	91.6%
Zheng et al. [101]	659	COVID-19	262	• Automatic tube current 200-250mAs • Tube voltage 120kv • Slice thickness 5.0 mm • Slice space: 5.0 mm FOV: 500 mm	Sun Yat-sen Memorial Hospital and Renmin Hospital of Wuhan University	85%
		Bacterial pneumonia	100
		Typical viral pneumonia	219
		Healthy controls	78