Table 1.

Characteristics of included studies

Study	Publication year	Country	Operator	US signs	US probe	Sampling	Study subjects
Donmez [11]	2012	Turkey	Radiologist	CT, LS, LP	Linear	NC	Trauma
Abbasi [12]	2012	Iran	Emergency physician	LS, CT	Linear	NC	Trauma
Hyacinthea[13]	2012	France	Emergency physician	LS, CT, LP	Convex	NC	Trauma
Nandipatib[14]	2011	United States	Emergency physician	LS, CT	Linear	C	Trauma
Nagarsheth [15]	2011	United States	Surgeon	CT, LS	Convex and linear	NC	Trauma
Xirouchakia[16]	2011	Greece	Intensivist	LS, CT, LP	Convex	NC	ICU
Brook [17]	2009	Israel	Radiologist	LS, CT	Convex	C	Trauma
Soldati [18]	2008	Italy	Emergency physician	LS, CT, LP	Convex	C	Trauma
Soldati [19]	2006	Italy	Emergency physician	LS, CT, LP	Convex	C	Trauma
Zhang [20]	2006	China	Emergency physician	LS, CT, LP	Convex, linear	NC	Trauma
Chung [21]	2005	South Korea	Radiologist	LS	Linear	C	Post-procedural
Kirkpatrick [22]c	2004	Canada and United States	Surgeon	LS, CT, PDS	Linear	NC	Trauma
Rowan [23]	2002	Canada	Radiologist	LS, CT	Linear	NC	Trauma

^aStudies included multiple conditions; only pneumothorax patients were included.

^bOnly one intercostal space was examined in this study.

^cOnly patients with CT scans were included.

C consecutive sampling, CT comet tail (B-lines).

LP lung point, LS lung sliding, NC nonconsecutive (convenience) sampling. PDS power Doppler sign.