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Characterization of Tympanic Cavity Volume in Newborns using Computerized Tomography Scanning International Journal of Morphology
Acer,Niyazi; Unur,Erdogan; Sönmez,M. Fatih; Zararsiz,Gökmen; Arslan,Ayla; Sagiroglu,Ayse; Ertekin,Tolga; Erkan,Mustafa; Coskun,Abdulhakim; Bilgen,Mehmet.
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...
Tipo: Journal article Palavras-chave: Computerized tomography; Tympanic cavity; Tympanic cavity volume; Similarity index.
Ano: 2016 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022016000100027
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Evaluation of Lumbar Vertebral Body and Disc: A Stereological Morphometric Study International Journal of Morphology
Gocmen-Mas,Nuket; Karabekir,Hamit; Ertekin,Tolga; Edizer,Mete; Canan,Yazici; Duyar,Izzet.
Anterior access to the L1-L5 vertebrae and disc spaces can be technically challenging, frequently requiring the use of an approach to a surgeon for an adequate exposure. The technique is used for lesion excision, corpectomy, vertebral body reconstruction with cages, realignment, and/or plating or screwing. For a successful anterior approach and a suitable instrumental design via screw, adequate morphometric knowledge about body of lumbar vertebrae and disc spaces and standardized volumetric data are also required for neurosurgeons. We aimed morphometric and volumetric evaluation of lumbar bodies and discs to contribute to a safe anterior approach during surgery. We evaluated vertebral body and disc morphometry using stereology in right-handed 25 adult...
Tipo: Journal article Palavras-chave: Lumbar vertebra; Body; Morphometry; Volumetry; Stereology; Anterior access.
Ano: 2010 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022010000300028
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Morphometric Analysis of Hemicerebellar Asymmetryn with Central Vertigo Cases: A Stereological Study International Journal of Morphology
Nuket Gocmen-Mas,H; Karabekir,Selim; Yilmaz Kusbeci,Ozge; Sahin,Bunyamin; Ertekin,Tolga; Bas,Orhan; Canan Yazici,A; Senan,Sevda.
We aimed to evaluate the relevant methods of stereology to estimate hemicerebellar asymmetry according to sex in both adult right handed vertigo cases and comparing with healthy cases. The study included 14 adult control subjects and 18 patients with vertigo. The volumes of the cerebellar hemispheres were determined by MRI using the point-counting approach of stereological methods. The mean (±SD) of the right cerebellar hemispheres in the patients with vertigo were 52.49±5.42 cm3 in males, 50.11±4.02 cm3 in females. The mean (±SD) of the left cerebellar hemispheres in the patients with vertigo were 53.11±3.70 cm3 in males, 49.73±4.69 cm3 in females. There was not significant quantitative evidence detected in terms of cerebella asymmetry between sagittal...
Tipo: Journal article Palavras-chave: Cavalier principle; Stereology; Hemicerebellar asymmetry; Magnetic resonance imaging; Vertigo.
Ano: 2010 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022010000200048
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