Antenatal depiction of the fetal ear with three-dimensional ultrasonography.

Abstract:

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.

journal_name

Obstet Gynecol

authors

Shih JC,Shyu MK,Lee CN,Wu CH,Lin GJ,Hsieh FJ

doi

10.1016/s0029-7844(98)00021-0

subject

Has Abstract

pub_date

1998-04-01 00:00:00

pages

500-5

issue

4

eissn

0029-7844

issn

1873-233X

pii

S0029-7844(98)00021-0

journal_volume

91

pub_type

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