Study	LUS sensitivity (%)	LUS specificity (%)	Criteria	Population characteristics (mean n, age, BMI; % male)
				COVID +	COVID−
Bar	96.8%	62.3%	≥3 B-lines at the upper site; consolidation and thickened pleura at the lower site; and thickened pleura.	31, 66.8 yr, 30.0 kg/m2; 35%	69, 68.7 yr, 26.4 kg/m2; 44%
Pare	88.9%	56.3%	Any B-lines were detected.	27, 53.0 yr, 31.7 kg/m2; 59.3%	16, 50.0 yr, 31.3 kg/m2; 31.3%
Yassa	72.1%	77.8%	LUS score ≥ 1.	43 pregnant women	9 pregnant women
Yassa	73.9%	94.1%	LUS score ≥ 1.	23 pregnant women	273 pregnant women
Favot	70.0%	75.0%	Nondependent bilateral pulmonary edema (bilateral B-lines with superior count ≥ inferior count and no pleural effusions).	40, 69 yr, 31 kg/m2; 60%	16, 63 yr, 29 kg/m2; 63%
Dini	78.7%	57.1%	LUS score ≥ 1.	94	56
Gil	100.0%	80.6%	Any pattern not compatible with A-lines in all intercostal areas.	27, 48 yr; 33.3%	31, 45 yr; 16.1%
Battista	68.2%	78.9%	Not specified.	44, 66 yr; 65.9%	19, 61 yr; 63.2%
Narinx	93.3%	21.3%	≥ 3 B-lines.	15, 49.9 yr; 60.0%	75, 50.5 yr; 42.7%
Bosso	73.1%	90.3%	LUS score > 12.5.	26, 66 yr; 69.2%	27, 65 yr; 70.4%
Colombi	93.5%	28.3%	Not specified.	341	145
Pivetta	94.4%	95.0%	Focal or diffuse interstitial syndrome plus with spared areas, subpleural consolidations, and irregular or thickened pleural line.	107, 62.8 yr; 54.1%	121, 50.3 yr; 43.7%
Lieveld	91.9%	71.0%	≥3 or more B-lines and/or consolidation in two or more zones unilaterally or in one or more zones bilaterally.	86, 63.4 yr; 58.1%	100, 64.1 yr; 58.0%
Sorlini	92.0%	64.9%	(A) Interstitial lung syndrome1 (B) Interstitial lung pattern2 (C) White lung (coalescent B lines) in two or more zones. (D) Subpleural consolidations.	287	97
Jalil	86.1%	90.9%	Multifocal confluent B-lines, irregular pleura, and the absence of a moderate or large pleural effusion.	36, 62.5 yr, 30.5 kg/m2; 52%	33, 65 yr, 29 kg/m2; 42%
Gibbons	97.6%	33.3%	≥3 B-lines was considered positive. Additionally, the presence of a single confluent B-line encompassing a third or more of the visualized distal intercostal space was considered positive3.	83, 56 yr; 43.4%	27, 64 yr; 55.6%
Haak	95.8%	59.4%	Irregular pleural line, multiple or confluent B-lines, subpleural consolidations and small pleural effusions.	24	69
Schmid	76.9%	77.1%	Bilateral patchy distribution of one of the following: pleural line irregularity OR ≥ 3 B-Lines per intercostal space OR small subpleural consolidation (<1.5 cm) OR no or small pleural effusion unilateral appearance of two or more of the criteria above.	39, 61 yr, 26.3 kg/m2; 56.4%	96, 60 yr, 26.3 kg/m2; 53.1%
Speidel	90.9%	76.3%	LUS score ≥ 8.	11, 76.0 yr; 73%	38, 69.5 yr; 47%
Ibrahim	97.4%	90.6%	(A) Patchy distribution of multiple coalesced and separated B-lines with the light beam sign, with bilateral and well-demarcated separation from large “spared” areas. (B) The pleural is sliding and might appear irregular and fragmented. (C) Multiple small subpleural consolidations are limited to the periphery of the lungs.	77, 53 yr; 83%	32, 68 yr; 50%
Bock	91.7%	64.8%	Lung sliding, lung pulse, lung point, multiple B-lines (≥3 per intercostal space), or thickened or fragmented visceral pleura were present.	12, 68 yr; 58%	71, 63 yr; 46%