Diagnostic Performance of Transient Elastography Versus Two-Dimensional Shear Wave Elastography for Liver Fibrosis in Chronic Viral Hepatitis: Direct Comparison and a Meta-Analysis

Table 2

Technical characteristics of the included studies.

Id	TE				2D-SWE
	No. of reader	Experience of operator	Probe	Technical failure rate	No. of reader	Experience of operator	Probe	Diameter of ROI	Technical failure rate
Leung [17]	1	More than 5 years	NA	10.4% (47/454)	1	NA	SC6-1	3-4 cm	1.1% (5/454)
Yao [22]	1	At least 100 TE procedures	M	0	1	NA	SC6-1	2 cm	0
Zeng [18]	2	At least 100 TE procedures	M	3.1% (8/257)	2	More than 6 months	SC6-1	2 cm	0.8% (2/257)
Ferraioli [21]	1	At least 50 TE procedures	NA	2.5% (3/121)	2	NA	SC6-1	2 cm	1.7% (2/121)
Deffieux [11]	1	More than 7 years	NA	5.3% (6/114)	2	NA	SC6-1	3 cm	1.7% (2/120)
Xia 2019 [19]	NA	NA	M or L	NA	2	NA	L5-1	NA	NA
Paul [23]	NA	NA	M or XL	2.1% (5/240)	NA	NA	SC6-1	1-1.5 cm	1.3% (3/240)
Osman [24]	1	NA	NA	14.0% (30/210)	1	NA	NA	NA	5.7% (12/210)

2D-SWE: two-dimensional shear wave elastography; NA: not available; ROI: region of interest; QUADAS: quality assessment of studies of diagnostic accuracy studies; TE: transient elastography.