Performance comparison of ultrasonography and magnetic resonance imaging in their diagnostic accuracy of placenta accreta spectrum disorders: a systematic review and meta-analysis

Insights into Imaging

Table 1 General characteristics of studies included in the systematic review (18 studies)

References	Country	Study design	Period analyzed	Trimester at scan	Reference standard	Mean age (years)	Image interpretation	Pregnancies	PAS at delivery
Levine [9]	USA	Prosp	1995–1997	2–3	Path/Surg	N/A	Blind	18	6
Masselli [10]	Italy	Prosp	2006–2007	3	Path/Surg	31	Blind & Experienced	50	12
Dwyer [11]	USA	Retro	2001–2006	N/A	Path/Surg	N/A	N/A	32	15
Mansour [12]	Egypt	Prosp	2010–2011	3	Surg	32	Blind & Experienced	35	15
Lim [13]	USA	Retro	2009–2010	2–3	Path	33	N/A	13	9
Elhawary [14]	Egypt	Retro	2010–2012	3	Surg	32	Blind	39	9
Peker [15]	Turkey	Retro	2008–2011	3	Path	N/A	Blind	40	20
Riteau [16]	France	Retro	2001–2012	3 (28–30)	Path/Surg	34	Blind & Experienced	42	26
Algebally [17]	Qatar	Prosp	2011–2014	3	NA	33	Blind & Experienced	100	32
Satija [18]	India	Prosp	2013–2014	3 (majority)	Path/Surg	29	Blind & Experienced	30	8
Balcacer [19]	USA	Retro	2004–2014	3 (majority)	Path/Surg	N/A	Blind & Experienced	40	18
Rezk [20]	Egypt	Prosp	2012–2014	3	Path/Surg	30	Blind & Experienced	74	53
Marcillac [21]	France	Retro	2010–2014	N/A	Path/Surg	32	Blind	22	13
Budorick [22]	USA	Retro	2006–2012	2–3	Path/Surg	34	Blind & Experienced	45	14
Kumar [23]	India	Prosp	2011–2013	2–3	Path/Surg	N/A	N/A	22	9
Ayati [24]	Iran	Prosp	2012–2013	2–3	Path/Surg	31	Blind & Experienced	82	17
Romeo [25]	Italy	Retro	2012–2018	3	Path/Surg	35	Blind & Experienced	51	23
Xia [26]	China	Retro	2012–2018	3	Path/Surg	36	Blind & Experienced	126	40

Only first author of each study is shown
PAS, placenta accrete spectrum disorder; Prosp, prospective; Retro, retrospective; Surg, surgical findings; Path, pathology; N/A, not available