Usefulness of DWI in preoperative assessment of deep myometrial invasion in patients with endometrial carcinoma: a systematic review and meta-analysis

Table 1 Description of studies included in meta-analysis

Author	Year	Journal	Study patient**	Total No. of patient	Age (range)	Index test	Field strength	b-value (s/mm²)	Time interval
Shen	2008	AJR	Pro	21	33 - 82 years	DWI + T2	1.5T	1,000	NR
Takeuchi	2009	Acta Radiol	Retro	33	24 - 85 years	DWI + T2	*1.5 or 3.0T	0 and 800	NR
Lin	2009	Radiology	Pro	48	25-80 years	DWI with Fused T2	3.0T	0 and 1000	1 - 21 days
Rechichi	2010	Eur Radiol	Pro	47	36 - 84 years	Only DWI (no referring to T2)	1.5T	0 and 500	5-35 days
Beddy	2012	Radiology	Retro	48	NR	DWI + T2	1.5T	0 and 800	NR
Seo		J Magn Reson Imaging	Pro	52	29 - 75 years	DWIBS with fused T2	3.0T	1000	1 - 20 days
Hori	2013	Eur Radiol	Pro	71	31 - 82 years	DWI + T2 Also referred to DWI with Fused T2	3.0T	0 and 1000	Less than 70 days

Note:
The study identification (ID) numbers correspond to study numbers on the graphs in Figures 5.
Time interval is the time between DWI examination and surgical procedure to histopathologically confirm the extent of myometrial invasion.
All studies had a standard reference of histopathology i.e., all the patients in each study had pathological confirmation of endometrial cancer by Dilation and Curettage or endometrial biopsy.
All studies enrolled patients consecutively.
NR = not reported.
*Some patients were evaluated using Magnetic field strength 1.5T while others with 3.0T.
**Pro = Prospective, Retro = Retrospective.

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