Table 2.
Characteristics of the included studies (n = 107)
| Characteristics | Number of studies |
|---|---|
| Type of publication | (n, %) |
| Journal article | (53, 49.53) |
| Conference proceedings | (43, 40.18) |
| Book chapter | (11, 10.28) |
| Year of publication | |
| 2021 | (19, 17.75) |
| 2020 | (30, 28.03) |
| 2019 | (14, 13.08) |
| 2018 | (11, 10.28) |
| 2017 | (6, 5.60) |
| 2016 | (4, 3.73) |
| 2015 | (6, 5.60) |
| 2014 | (9, 8.41) |
| 2013 | (3, 2.80) |
| 2012 | (1, 0.93) |
| 2011 | (3, 2.80) |
| 2010 | (1, 0.93) |
| Fetal Organ | |
| Fetus body | (31, 28.97) |
| Fetal part structures | (13, 12.14) |
| Anatomical structures | (8, 7.47) |
| Growth disease | (6, 5.60) |
| Gestational age | (3, 2.80) |
| Gender | (1, 0.93) |
| Fetus head | (43, 40.18) |
| Skull localization and measurement | (25, 23.36) |
| Brain standard plane | (13, 12.14) |
| Brain disease | (5, 4.67) |
| Fetus face | (10, 9.34) |
| Fetal facial standard planes | (5, 4.67) |
| Face anatomical landmarks | (3, 2.80) |
| Facial expressions | (2, 1.86) |
| Fetus heart | (13,12.14) |
| Heart disease | (7, 6.54) |
| Heart chambers view | (6, 5.60) |
| Fetus abdomen | (10, 9.34) |
| Abdominal anatomical landmarks | (10, 9.34) |
| Publication Country and top institute | |
| China | (41, 38.31) |
| Shenzhen University | (13, 12.14) |
| Beihang University | (5, 4.67) |
| Chinese University of Hong Kong | (4, 3.73) |
| Hebei University of Technology | (2, 1.86) |
| Fudan University | (2, 1.86) |
| Shanghai Jiao Tong University | (2, 1.86) |
| South China University of Technology | (2, 1.86) |
| Other institutes | (11, 10.28) |
| UK | (25, 23.36) |
| University of Oxford | (20, 18.69) |
| Imperial College London | (4, 3.73) |
| King’s College, London | (1, 0.93) |
| India | (14, 13.08) |
| Japan | (4, 3.73) |
| Indonesia | (4, 3.73) |
| USA | (3, 2.80) |
| South Korea | (3, 2.80) |
| Iran | (3, 2.80) |
| Australia | (1, 0.93) |
| Canada | (1, 0.93) |
| Mexico | (1, 0.93) |
| France | (1, 0.93) |
| Italy | (1, 0.93) |
| Tunisia | (1, 0.93) |
| Spain | (1, 0.93) |
| Iraq | (1, 0.93) |
| Brazil | (1, 0.93) |
| Malaysia | (1, 0.93) |