Table 1.
Summary of studies included in the present meta-analysis.
| Author | Year | Country | Mean age | Cases | Predesign | Model | Contrast agent | Blinded | Staging criteria | Quadas score | Refs | Final diagnosis | Symptoms |
| Sun et al | 2008 | China | 55.4 | 30 | Retro | IU22 | SonoVue | Single | FIGO | 11 | (21) | pathology | Irregular vaginal bleeding, discharge, Irregular menstruation |
| Song et al | 2009 | China | none | 35 | Prosp | IU22 | SonoVue | Single | FIGO | 11 | (22) | pathology | Irregular vaginal bleeding |
| Zhang et al | 2011 | China | none | 28 | Retro | IU22 | SonoVue | Single | FIGO 2009 | 11 | (23) | pathology | Irregular vaginal bleeding, discharge |
| Liu et al | 2011 | China | 56 | 37 | Retro | Aloka α10 | SonoVue | Double | FIGO 1988 | 12 | (24) | pathology | Irregular vaginal bleeding |
| Chen et al | 2011 | China | 55.7 | 28 | Prosp | Mylab90 | SonoVue | Single | FIGO 2000 | 11 | (25) | pathology | Irregular vaginal bleeding, Postmenopausal hemorrhage |
| Pei et al | 2011 | China | 52.6 | 48 | Prosp | Acuson Sequoia 512 | SonoVue | Single | FIGO 2009 | 11 | (26) | pathology | Irregular vaginal bleeding |
| Xie et al | 2012 | China | 56 | 37 | Prosp | Aloka α-10 | SonoVue | Single | FIGO 1988 | 11 | (27) | pathology | Irregular vaginal bleeding |
| Wang et al | 2013 | China | 56 | 31 | Prosp | GE Logiq 9 | SonoVue | Single | FIGO 2009 | 11 | (28) | pathology | Irregular vaginal bleeding |
| Xu et al | 2013 | China | 42 | 47 | Prosp | Acuson Sequoia 512 | SonoVue | Single | FIGO 2009 | 11 | (29) | pathology | Irregular vaginal bleeding |
| Ding et al | 2013 | China | 55 | 40 | Retro | MyLabTwice | SonoVue | Double | FIGO 2009 | 12 | (30) | pathology | Irregular vaginal bleeding, discharge, Irregular menstruation |
| Zhou et al | 2013 | China | 52 | 40 | Prosp | Technos MPX DU8 | SonoVue | Single | FIGO 1988 | 11 | (31) | pathology | Irregular vaginal bleeding, discharge |
| Huang et al | 2016 | China | 49.8 | 80 | Prosp | Aloka SSD-ALPHA10 | SonoVue | Single | FIGO 2009 | 11 | (32) | pathology | Irregular vaginal bleeding, discharge |
| Yi et al | 2015 | China | 55.4 | 60 | Retro | GE Logiq E9 | SonoVue | Single | FIGO 2009 | 11 | (33) | pathology | Irregular vaginal bleeding, Irregular menstruation |
| Zhang et al | 2018 | China | 54.58 | 82 | Retro | Acuson Sequoia 512 | SonoVue | Single | FIGO 2013 | 11 | (34) | pathology | Irregular vaginal bleeding, Irregular menstruation |
| Mao et al | 2019 | China | 55 | 62 | Prosp | GE Logiq E9 | SonoVue | Single | FIGO 2009 | 11 | (35) | pathology | Irregular vaginal bleeding |
Retro = retrospective study, Prosp = prospective study.