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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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Estimation of Cranial Capacity in 17-26 Years Old University Students International Journal of Morphology
Acer,Niyazi; Usanmaz,Mustafa; Tugay,Urnut; Erteki'n,Tolga.
It is natural that there is close relationship between cranial capacity, and the size of brain. Several studies have estimated the cranial capacity which indirectly reflects the brain volume. This study was carried out on 366 (226 male and 140 female) healthy university students aged between 17-26 years old at Mugla University, Mugla, Turkey. By using linear dimensions of the head the mean cranial capacity and SD in males and females were 1411.64+118.9 cm³ and 1306.95+162.9 cm³, respectively. There was a significant difference between genders (p<0.05). This investigation was showed the cranial capacity is larger in males than females. We also proposed a regression formula that could be used to predict the cranial capacity
Tipo: Journal article Palavras-chave: Craniometry; Cranial capacity; Regresión formula.
Ano: 2007 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022007000100008
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Which Method is Gold Standard for Determination of Thyroid Volume? International Journal of Morphology
Erçikti,Nurcan; Acer,Niyazi; Apaydi,Nihal; Güven,Inanç; Zararsiz,Gökmen.
Change of the thyroid gland volume is often the symptom of most common pathological conditions some thyroid diseases. The exact calculation for the thyroid volume is very important for the assessment and management of thyroid disorders. The volume of thyroid gland, using computed tomography (CT), ultrasound (USG) and magnetic resonance imaging (MRI) has been accessed in few studies published; however a gold standard method has not yet been determined. The purpose of this study was to estimate the volume of normal thyroid gland to define an optimal correction factor therefore was to compare different techniques using the CT. We used computed tomography images obtained from 8 cadavers (2 females, 6 males) to calculate the thyroid volumes. In the present...
Tipo: Journal article Palavras-chave: Thyroid volume; Actual volume; Correction factor; Stereology.
Ano: 2017 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022017000200011
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