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.