Antenatal Depiction of the Fetal Ear With Three-Dimensional Ultrasonography

Autor: Chien-Nan Lee, Fon-Jou Hsieh, Ming-Kwang Shyu, Chih-Hsiu Wu, Ghi-Jen Lin, Jin-Chung Shih
Rok vydání: 1998
Předmět:
Zdroj: Obstetrics & Gynecology. 91:500-505
ISSN: 0029-7844
DOI: 10.1097/00006250-199804000-00004
Popis: Objective: To evaluate the feasibility of examining the fetal ear with three-dimensional ultrasound. Methods: In 125 pregnancies between 19 and 38 weeks of gestation, fetal ears were evaluated by three-dimensional ultrasound. The volume images with surface rendering were analyzed to depict the morphology, lying axis, orientation, and cranial location of the fetal ears. Results: Three-dimensional images of one or both ears were successfully reconstructed in 105 fetuses. Among them, 18 fetuses had anomalous ears. The anomalous ears, including microtia, low-set ear with slope axis, abnormal ear orientation, and edematous ear, were confirmed after delivery. Three-dimensional ultrasound consistently displayed fetal ear abnormalities with greater accuracy and clarity. Conclusion: Because anomalous ears may be a part of complex fetal malformations, it is important to recognize ear abnormalities. Due to the complexity of the fetal ear, three-dimensional ultrasound offers more important information than two-dimensional ultrasound, which simply gives auricular geometry. We suggest that three-dimensional ultrasound can be used better to examine the fetal ear and may prove to be useful for prenatal diagnosis and genetic counseling.
Databáze: OpenAIRE
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