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Provedor de dados:  International Journal of Morphology
País:  Chile
Título:  Characterization of Tympanic Cavity Volume in Newborns using Computerized Tomography Scanning
Autores:  Acer,Niyazi
Unur,Erdogan
Sönmez,M. Fatih
Zararsiz,Gökmen
Arslan,Ayla
Sagiroglu,Ayse
Ertekin,Tolga
Erkan,Mustafa
Coskun,Abdulhakim
Bilgen,Mehmet
Data:  2016-03-01
Ano:  2016
Palavras-chave:  Computerized tomography
Tympanic cavity
Tympanic cavity volume
Similarity index
Resumo:  This study reports tympanic cavity (TC) volume in newborns, which was missing in the literature. Ex vivo histology and computerized tomography (CT) scans were performed on temporal bone and data were analyzed in part using software developed in house. CT images with a slice thickness of 0.5 mm were obtained from 5 newborn cadavers and analyzed independently by two expert researchers. The border of the TC was delineated manually and measurement of area of interest was calculated on masked images. Then, the area measurements from all sections were added to estimate the total volume. The agreements between the histological and CT findings were then compared for accuracy, repeatability and reliability. The Dice and Jaccard similarity coefficient measures were used as a statistical validation metric to evaluate the assessor's performance in manual volume segmentation. Good assessor agreement was observed with average Dice values above 0.8 indicating that consistent and reliable volume measurements were feasible. The proposed protocol was shown to be accurate in calculating the TC volume, and thus can be used for computer-assisted presurgical planning or for diagnosing structural alterations in TC.
Tipo:  Journal article
Idioma:  Inglês
Identificador:  http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022016000100027
Editor:  Sociedad Chilena de Anatomía
Formato:  text/html
Fonte:  International Journal of Morphology v.34 n.1 2016
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