Geometrical parameters of the mandible in 3D CBCT imaging
Publication date: Available online 1 October 2018Source: Biocybernetics and Biomedical EngineeringAuthor(s): A.M. Ryniewicz, W. Ryniewicz, Ł. BojkoAbstractThe aim of the study is to report on a method for the measurement and analysis of the accuracy in mapping the shape of the mandible spatially modeled based on cone beam imaging. To achieve this goal, the geometrical determinants of the mandible shape were identified; in addition, the accuracy of their cone beam in computer tomography (CBCT) images was verified. The latter – verification of images – was based on reference measures made by a coordinate measuring machi...
Source: Biocybernetics and Biomedical Engineering - October 4, 2018 Category: Biomedical Engineering Source Type: research

Detection of Modic changes in MR images of spine using local binary patterns
ConclusionA novel approach to identify MC in vertebrae by exploiting textural features is proposed. This shall assist radiologists in detecting abnormalities and in treatment planning. (Source: Biocybernetics and Biomedical Engineering)
Source: Biocybernetics and Biomedical Engineering - October 4, 2018 Category: Biomedical Engineering Source Type: research

Evaluation of filters over different stimulation models in evoked potentials
In this study, data were recorded from university students whose age between 18 and 25 years with visual and auditory stimuli. Discrete wavelet transforms, singular spectrum analysis, empirical mode decomposition and discrete Fourier transform based filters were used and compared with raw data on classification performance. Higuchi fractal dimension and entropy features were extracted from EEG; P300 features were extracted from EP signals. Classification was applied with support vector machines. All filtered data gave better scores than raw data. Empirical mode decomposition (EMD) and Fourier-based filter yielded lower res...
Source: Biocybernetics and Biomedical Engineering - September 18, 2018 Category: Biomedical Engineering Source Type: research

Statistical methods for constructing gestational age-related charts for fetal size and pregnancy dating using longitudinal data
This article suggests how this method can be extended to longitudinal data using fractional polynomials in linear mixed effect regression. The presented approach includes maximum likelihood estimation for fitting first- and second-order fractional polynomial models, and multimodel inference using Akaike's information criterion and related tools as a suitable strategy for model selection. Finally, an example of the suggested approach is presented. (Source: Biocybernetics and Biomedical Engineering)
Source: Biocybernetics and Biomedical Engineering - September 18, 2018 Category: Biomedical Engineering Source Type: research

Fuzzy genetic-based noise removal filter for digital panoramic X-ray images
Publication date: Available online 5 September 2018Source: Biocybernetics and Biomedical EngineeringAuthor(s): Mehravar Rafati, Fateme Farnia, Mahdi Erfanian Taghvaei, Ali Mohammad NickfarjamAbstractThis paper proposed a novel fuzzy genetic-based noise removal filter and surveyed the gain of popular filters for noise removal in the digital orthopantomography (OPG) images. The proposed filter is a non-invasive technique for attaining sub-clinical information from the areas of interest in each tooth, both jaws and maxillofacial.The proposed Poisson removal filter combines 4th-order partial differential equations (PDE), total...
Source: Biocybernetics and Biomedical Engineering - September 6, 2018 Category: Biomedical Engineering Source Type: research