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Quantification by Quadrants of the Distortion Present in Conventional Panoramic Radiograph International Journal of Morphology
Zúñiga,Janneth.
The panoramic radiograph constitutes the "gold standard" for any clinical evaluation in dentistry. It has been universally accepted that it has a global distortion of 25 % due to magnification. The present study was carried out to determine more precise percentages of distortion, and to find out whether the distortion was due to magnification or minimization. Thirty skulls with their mandibles were divided by two horizontal and four vertical planes in ten quadrants. Wires of different lengths were fixed in each of these quadrants. A panoramic radiograph was taken for each skull. The lengths of the wires measured in the images (distorted value) were compared to the actual lengths of the wires (real value). The concordance correlation coefficient was...
Tipo: Journal article Palavras-chave: Panoramic radiograph; Orthopantomograph; Distortion.
Ano: 2017 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022017000100043
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Simultaneous Occurrence of Three Anatomical Variations: Anomalous Right Subclavian Artery, Non-Recurrent Inferior Laryngeal Nerve and Right Thoracic Duct International Journal of Morphology
Peña,Elizabeth; Zúñiga,Janneth; Baena,Gloria.
In one male cadaver of Colombian nationality, dissected by a group of medical students during a gross anatomy course at the Universidad del Valle in Cali, Colombia, three anatomical variations were found: an anomalous or aberrant right subclavian artery (ARSA), a non-recurrent inferior laryngeal nerve and a right thoracic duct. The aortic arch gave origin to four instead of three arteries, which, from right to left, were the right common carotid, the left common carotid, the left subclavian and the right subclavian arteries. The anatomical variation of the right subclavian artery is known also as lusoria artery, in which case the artery passes behind the esophagus and the trachea in its course towards the right side of the neck. The perimeters of the...
Tipo: Journal article Palavras-chave: Aberrant right subclavian artery; Recurrent laryngeal nerve; Thoracic duct; Genetic variation.
Ano: 2013 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022013000400006
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