Research Article
Prenatal Ultrasound Screening for External Ear Abnormality in the Fetuses
Table 1
Detection rate of fetal external ear in different gestational ages for routine obstetric ultrasonography.
| Gestational age (week) | Fetus (n) | Number of auricles (n) | Detection rate (%) |
| 16~<20 | 4825 | 9650 | 94.11 | 20~<24 | 7892 | 15784 | 95.19 | 24~<28 | 7256 | 14512 | 87.45 | 28~<32 | 6621 | 13242 | 77.56 | 32~<36 | 6324 | 12648 | 68.84 | 36~40 | 4245 | 8490 | 50.73 |
| Total | 37163 | 74326 | 78.98 |
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