CT Scan Imaging of the Human Fetal Labyrinth: Case Series Data Throughout Gestation.
Details
Serval ID
serval:BIB_EF6DACD0EE97
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
CT Scan Imaging of the Human Fetal Labyrinth: Case Series Data Throughout Gestation.
Journal
Otology and Neurotology : Official Publication of the American Otological Society, American Neurotology Society [and] European Academy of Otology and Neurotology
ISSN
1537-4505 (Electronic)
ISSN-L
1531-7129
Publication state
Published
Issued date
2016
Peer-reviewed
Oui
Volume
37
Number
5
Pages
602-607
Language
english
Notes
Publication types: Journal ArticlePublication Status: ppublish
Abstract
OBJECTIVES: The inner ear in humans reaches its final configuration and its adult size during fetal life. According to the literature, this occurs between 18 and 25 weeks of amenorrhea (WA). Our goal is to clarify the course of inner ear size development.
METHODS: Using computed tomography (CT) scanner, we studied 13 measurements in the inner ear of a collection of 153 fetuses from 21 to 40 WA.
RESULTS: We found no side-related differences or sexual dimorphism in the measurements. Cochlear and vestibular bone measurements did not show growth from 21 to 40 WA, with the exception of the lateral semicircular canal (LSCC) bony island, which grows until 25 WA. Internal auditory canal (IAC) and cochlear aqueduct (CA) growth are correlated with gestational age. As our cochlear measurements are similar to those of infants and adults, in accordance with the literature we conclude that the cochlea has reached its adult size before 21 WA. The continuous growth of the IAC and CA is linked to petrous ossification that continues during fetal gestation and after birth.
CONCLUSION: We confirm that the cochlea reaches its adult size during the second trimester of fetal life.
METHODS: Using computed tomography (CT) scanner, we studied 13 measurements in the inner ear of a collection of 153 fetuses from 21 to 40 WA.
RESULTS: We found no side-related differences or sexual dimorphism in the measurements. Cochlear and vestibular bone measurements did not show growth from 21 to 40 WA, with the exception of the lateral semicircular canal (LSCC) bony island, which grows until 25 WA. Internal auditory canal (IAC) and cochlear aqueduct (CA) growth are correlated with gestational age. As our cochlear measurements are similar to those of infants and adults, in accordance with the literature we conclude that the cochlea has reached its adult size before 21 WA. The continuous growth of the IAC and CA is linked to petrous ossification that continues during fetal gestation and after birth.
CONCLUSION: We confirm that the cochlea reaches its adult size during the second trimester of fetal life.
Pubmed
Web of science
Create date
20/04/2016 13:23
Last modification date
20/08/2019 16:17
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