2017
DOI: 10.1016/j.compbiomed.2017.06.016
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An Independent Active Contours Segmentation framework for bone micro-CT images

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Cited by 14 publications
(6 citation statements)
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“…The influence of operator experience (experienced and inexperienced examiners), filter thickness (aluminum 0.5 and 1 mm), and scanning voxel size (6 and 12 µm) on BV/TV and Tb.Th were assessed using three-way analysis of variance (ANOVA) with Tukey's post hoc test. Intraclass correlation coefficients (ICCs) for absolute agreement among total tissue volume measurements were calculated 17 (MATLAB MathWorks, Natick, USA) to evaluate inter-examiner reliability 16 for cortical and trabecular bone segmentation in both the experienced and inexperienced groups.…”
Section: Methodsmentioning
confidence: 99%
“…The influence of operator experience (experienced and inexperienced examiners), filter thickness (aluminum 0.5 and 1 mm), and scanning voxel size (6 and 12 µm) on BV/TV and Tb.Th were assessed using three-way analysis of variance (ANOVA) with Tukey's post hoc test. Intraclass correlation coefficients (ICCs) for absolute agreement among total tissue volume measurements were calculated 17 (MATLAB MathWorks, Natick, USA) to evaluate inter-examiner reliability 16 for cortical and trabecular bone segmentation in both the experienced and inexperienced groups.…”
Section: Methodsmentioning
confidence: 99%
“…HashishGhosh and Bandyopadhyay [40] put forward image co-segmentation using dual active contours: two contours proceed towards the boundary of the common object until the two contours coincide at the object boundary. Korfiatis et al [41] proposed a new independent active contour segmentation framework based on two autonomous modules, namely automatic ROI extraction and independent active contours evolution, which segment the ROI image using multiple active contours. Although these contour-based algorithms have made some progress, they are time consuming and difficult to be applied to our network.…”
Section: Related Workmentioning
confidence: 99%
“…Em seguida, a partir da visualização das duas imagens na tela do programa, o registro automático foi iniciado selecionando (DOMARK et al, 2013;PATEL et al, 2014;ESTRELA et al, 2015;MANNOCCI;PATEL, 2016;MAMEDE-NETO et al, 2017;ORDINOLA-ZAPATA et al, 2017;ESTRELA et al, 2018;PAUWELS, 2018;GROPPO et al, 2018;VASCONCELOS et al, 2018), impulsionando a realização de novas pesquisas para avaliação da anatomia (ESTRELA et al, 2015;STUDEBAKER et al, 2018), do preparo (SCARFE; FARMAN; SUKOVIC; 2006) e da obturação do sistema de canais radiculares , por meio da análise quali-quantitativa de parâmetros morfométricos bidimensionais (área, perímetro, circularidade, diâmetros maior e menor, centroides, porosidade) e tridimensionais (volume, área de superfície e SMI). Entretanto, destacase que este recurso imaginológico pode apresentar limitações como a presença de artefatos que levam a distorções das imagens, quando comparadas às estruturas reais (SCHULZE et al, 2011;FLORES-MIR et al, 2014;DARBY et al, 2015;YUAN et al, 2016; (OTSU, 1979;SAUVOLA;PIETAKSINEN, 2000;MOREIRA et al, 2012;KORFIATIS;MATSOPOULOS, 2017). Entretanto, as especificações da configuração geométrica dos TCFCs resultam em quantidade maior de radiação dispersa detectada, o que leva à redução significativa do contraste em qualquer TCFC quando comparado à microCT (JACOBS, 2011;PAUWELS et al, 2012;NEMTOI et al, 2013;MARET et al, 2014;MICHETTI et al, 2015;PAUWELS, 2018) (JACOBS, 2011;PAUWELS et al, 2012;NEMTOI et al, 2013;MARET et al...…”
Section: Escaneamento Em Tcfcunclassified
“…PECORA; DE SOUSA-NETO, 2012;VERSIANI et al, 2013;LEONI et al, 2014;VERSIANI et al, 2018), por meio do processo de limiarização que segmenta a imagem em duas fases de interesse através do ajuste dos níveis de tons de cinza, levando em consideração a utilização de um histograma de contraste de cada imagem (MOREIRA et al, 2012). O processo de limiarização seleciona os pixels da área de interesse, identificando, por meio de tons de cinza, as estruturas de maior e menor densidade e, dessa forma, torna o processo binarizado, ou seja, transforma as estruturas analisadas em uma escala de duas cores: branco e preto (OTSU, 1979;SAUVOLA;PIETAKSINEN, 2000;MOREIRA et al, 2012;KORFIATIS;MATSOPOULOS, 2017).…”
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