نتایج جستجو برای: cephalometry
تعداد نتایج: 464 فیلتر نتایج به سال:
Cephalometric analysis is commonly used as a standard tool for orthodontic diagnosis and treatment planning. The identification of cephalometric landmarks on images of the skull allows the quantification and classification of anatomical abnormalities. In clinical practice, the landmarks are placed manually which is time-consuming and subjective. This work investigates the application of Random ...
In this paper, we present an algorithm for aligning and matching unlabeled sets of points and a method for building a statistical model composed of a mean observation and associated variability. This model is used to solve the cephalometric problem. The main idea of this paper consists in using a dual step strategy: estimate the pose and then the correspondence alternatively. Correspondence bei...
the aim of this study was to investigate the reproducibility of natural head position (nhp) at different times of the day and to compare the reproducibility of the initial photographs with 6-month repeat photographs.the participants in this prospective study were seventy 14 to 50-year-old individuals. each participant was photographed with a digital camera twice, at three different times of the...
templates are very useful tools for diagnosis of malocclusions. a number of templates have been provided for some populations in previous years. since craniofacial characteristics of different ethnic groups are not the same, each population needs its own norms. the aim of this study was to provide orthodontic craniofacial templates for 8-16 year old iranian boys and compare dentoskeletal featur...
In this paper, a regional minimal cost approach without parameters is used for contour tracking with a good robustness. Dynamic programming is exploited for its efficiency. This general method is applied to the extraction of the cranial contour on higth resolution X-Ray image. Ellipse is then fitted on the extracted contour to represent it as a first step for automatic localisation of cephalome...
Cephalometric lateral radiography is an important paraclinical tool in diagnosing and treatment design of skeletaldental malocclusions. Objective of this study is to determine accuracy amount of measurements of cephalometry in two types of digital and ordinary graphy to specify the more beneficial method having more accuracy. In this descriptive-analytical study samples include digital and ordi...
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