3D exemplar-based random walks for tooth segmentation from cone-beam computed tomography images

2016 ◽  
Vol 43 (9) ◽  
pp. 5040-5050 ◽  
Author(s):  
Yuru Pei ◽  
Xingsheng Ai ◽  
Hongbin Zha ◽  
Tianmin Xu ◽  
Gengyu Ma
Keyword(s):  
Computed Tomography ◽  
Random Walks ◽  
Cone Beam Computed Tomography ◽  
Cone Beam ◽  
Computed Tomography Images ◽  
Tooth Segmentation

scholarly journals Is Manual Segmentation the Real Gold Standard for Tooth Segmentation? A Preliminary in vivo Study Using Cone-beam Computed Tomography Images

2021 ◽  
Vol 22 (3) ◽  
pp. 263-273
Author(s):  
Sercan Sabancı ◽  
Elif Şener ◽  
Rukiye Irmak Turhal ◽  
Barış Oğuz Gürses ◽  
Figen Gövsa ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Gold Standard ◽  
Cone Beam ◽  
Manual Segmentation ◽  
The Real ◽  
Computed Tomography Images ◽  
Tooth Segmentation

Implant treatment planning regarding augmentation procedures: panoramic radiographs vs. cone beam computed tomography images

2015 ◽  
Vol 27 (8) ◽  
pp. 1010-1016 ◽  
Author(s):  
Dorothea C. Dagassan-Berndt ◽  
Nicola U. Zitzmann ◽  
Clemens Walter ◽  
Ralf K. W. Schulze
Keyword(s):  
Computed Tomography ◽  
Treatment Planning ◽  
Cone Beam Computed Tomography ◽  
Cone Beam ◽  
Panoramic Radiographs ◽  
Computed Tomography Images ◽  
Implant Treatment

scholarly journals Oral and maxillofacial anatomical structures acknowledgment through cone beam computed tomography images – a teaching practice experience

2019 ◽  
Vol 19 (3) ◽  
pp. 163-171
Author(s):  
Solange Kobayashi-Velasco ◽  
Fernanda Cristina Sales Salineiro ◽  
Ivan Onone Gialain ◽  
Wellington Hideaki Yanaguizawa ◽  
Marcelo Gusmão Paraiso Cavalcanti
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Teaching Practice ◽  
Cone Beam ◽  
Anatomical Structures ◽  
Practice Experience ◽  
Computed Tomography Images

O objetivo deste estudo foi relatar uma metodologia de ensino de tomografia computadorizada de feixe cônico (TCFC) aplicada a estudantes de graduação, avaliando o conhecimento de estruturas anatômicas do complexo dentomaxilofacial. Os estudantes foram orientados quanto às estruturas anatômicas e às aplicações clínicas da TCFC em aulas teóricas e práticas, compreendendo 45 horas de aula. Foram submetidos a duas avaliações, a primeira na metade do semestre, e a segunda no término do semestre. Os escores das avaliações (três variáveis: 1) nome, 2) lado - esquerdo/direito e 3) reconstruções multiplanares (RMP) - imagens ortogonais de identificação) foram comparados para verificar se houve melhora na aprendizagem. Testes de medianas e Wilcoxon compararam os exames intermediário e final. Os valores medianos para a variável 1 foram 6,0 (intermediário) e 8,0 (final). Em relação à variável 2, a mediana variou de 9,0 (intermediário) a 10,0 (final). Quando os resultados da variável 3 foram analisados, ambas as medianas foram 10,0. Houve diferença significativa (teste de Wilcoxon, p<0,05) quando foram comparados os exames intermediário e final, nas três categorias. Correlações lineares foram estabelecidas entre as três categorias e foram estatisticamente significantes para duas associações (“nome da estrutura anatômica” com “lado da estrutura anatômica” e “nome da estrutura anatômica” com “imagens da MPR”). Os estudantes de graduação apresentaram uma melhora em termos do reconhecimento correto das estruturas anatômicas, nome e lado, bem como imagens de MPR quando comparadas as duas avaliações.

scholarly journals Evaluation of the Prevalence of Concha Bullosa in Cone-Beam Computed Tomography Images

2020 ◽  
Vol 12 (3) ◽  
pp. 93-96
Author(s):  
Nasim Shams ◽  
Bahareh Shams ◽  
Zahra Sajadi
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Middle Turbinate ◽  
Cone Beam ◽  
P Value ◽  
Concha Bullosa ◽  
Computed Tomography Images ◽  
Significant Difference ◽  
And Gender ◽  
Sinus Ostium

Background: The ostiomeatal complex (OMC) is not a separate anatomical structure although it is a functional unit of structures, including the middle meatus, uncinate process, infundibulum, maxillary sinus ostium, ethmoidal bulla, anterior ethmoid sinus ostium, and frontal recess. Concha bullosa is the pneumatization of the concha, which is one of the most common anatomical variations in the middle turbinate. Methods: This study was conducted using the cone-beam computed tomography (CBCT) images of 172 patients in the archives of the Department of Oral and Maxillofacial Radiology, Dentistry School, Ahvaz Jundishapur. Patient information including age and gender, presence or absence of concha bullosa, the involved side (left or right), and its type (i.e., extensive, lamellar, and bulbous) were collected in the information form. Finally, the chi-square test (with SPSS, version 22) was used to analyze the data, and P value less than 0.05 was considered statistically significant. Results: Patients with and without concha bullosa were 39.1 and 41.7 years, respectively, but it was no significant difference in terms of age (P = 0.321). Out of 52 patients with concha bullosa, 19 (36.5%) cases were males and 33 (63.5%) of them were females. The prevalence of concha bullosa was higher for the bilateral side (20 patients, 38.5%, P = 0.000). The prevalence of bulbulsand lamellar-shape was nearly the same (32.7% and 30.8%, respectively). Eventually, the extensive shape with 36.5% was more frequent for the shape of concha bullosa (P = 0.000). Conclusions: The prevalence of concha bullosa was high. There was no significant difference in terms of age (P = 0.321) and gender (P = 0.058) of patients with concha bullosa. The extensive type and the bilateral appearance of concha bullosa were more significant (P = 0.000).

Sign in / Sign up

Export Citation Format

Share Document