. 2021 Aug 24;69(1):73–83. doi: 10.1109/TUFFC.2021.3107598

TABLE II. Correlations of the Proposed Features With Severity of COVID-19 Pneumonia.

Features			value
Pleural line	TPL	0.31	0.12
	RPL	0.39	< 0.05^*
	MPLI	−0.31	0.12
	SDPLI	0.21	0.30
B-lines	NBL	0.66	< 0.001^***
	AWBL	0.70	< 0.001^***
	ACBL	0.19	0.34
	AIBL	0.39	< 0.05^*

^{^*}

Inline graphic , ,

^{^***}

Inline graphic : Spearman’s correlation coefficient. TPL = thickness of pleural line, RPL = roughness of pleural line, MPLI = mean value of pleural line intensity, SDPLI = SD of pleural line intensity, NBL = number of B-lines, AWBL = accumulated width of B-lines, ACBL = attenuation coefficient of B-lines, AIBL = accumulated intensity of B-lines.