The impact of different cone beam computed tomography and multi-slice computed tomography scan parameters on virtual three-dimensional model accuracy using a highly precise ex vivo evaluation method

Matta, Ragai Edward; Wilmowsky, Cornelius von; Neuhuber, Winfried; Lell, Michael; Neukam, Friedrich Wilhelm; Adler, Werner; Wichmann, Manfred; Bergauer, Bastian

doi:10.1016/j.jcms.2016.02.005

Cited by 14 publications

(9 citation statements)

References 26 publications

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“…Although veterinary studies evaluating anatomical accuracy and comparison between methods (MSCT and CBCT) are lacking, their reconstruction algorithms provide isometrically similar and accurate images for bone, as demonstrated in previous studies in the human field. 3,4 The morphometric data documented in this study identified differences in the conformation of the mandibular fossa, in the head of the mandible and in joint congruity between two groups of cats with different skull conformations. The findings were of statistical significance, despite of the small number of individuals, which was a limitation of the study.…”

Section: Discussionmentioning

confidence: 64%

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Comparative morphometry of the temporomandibular joint in brachycephalic and mesocephalic cats using multislice CT and cone beam CT

Delesalle

Lopes

Gawor³

et al. 2020

Journal of Feline Medicine and Surgery

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Objectives The purpose of this study was to analyse and compare morphometric measurements of the temporomandibular joint (TMJ) in two groups of cats with brachycephalic and mesocephalic craniofacial skull conformations using multislice CT and cone beam CT. Methods CT records of 20 cats without TMJ pathology were included in the study, and were divided into two groups according to those with mesocephalic or brachycephalic skull conformation. Width and depth of the mandibular fossa, width and height of the head of the mandible, and two different angles were measured in 40 TMJs. Results TMJ conformation differed between groups: 3/6 parameters were statistically different. Brachycephalic cats had a significantly narrower mandibular fossa, a shorter head of the mandible and a wider angle of congruence (angle 2). Conclusions and relevance The results provide morphometric measurements that can serve as a reference tool for the veterinary radiologist and surgeon when TMJ evaluation is necessary. Moreover, the study identified significant differences between the two craniofacial skull conformations.

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Section: Discussionmentioning

confidence: 64%

Section: Discussionmentioning

confidence: 99%

Comparative morphometry of the temporomandibular joint in brachycephalic and mesocephalic cats using multislice CT and cone beam CT

Delesalle

Lopes

Gawor³

et al. 2020

Journal of Feline Medicine and Surgery

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show abstract

“…A threshold tool is available so that the examiner can change the airway space-filling degree according to visual inspection. Since there is no standard protocol for these instruments and measurements, [8,14,[20][21][22] the calibrated observer calculated with the preset (25) and the best value that visually could fill the airway borders.…”

Section: Discussionmentioning

confidence: 99%

“…Some protocols have a higher resolution (smaller voxel sizes) but also result in greater exposure to radiation for patient. [13,20] It is prudent that the least needed resolution should be used to reduce patient exposure to radiation. This study compared the airway volume acquired with three voxel resolutions -0.2 mm, 0.25 mm, and 0.4 mm.…”

Section: Discussionmentioning

confidence: 99%

Important queries for the airway analysis in cone-beam computed tomography scans: Threshold tool and voxel size protocol

Martins

Liedke

Dias³

et al. 2018

J Oral Maxillofac Radiol

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“…The previous studies recommend the use of small scan fields and a small voxel size to optimize quality of 3D model. 31,32 The greatest disadvantage of the AR creation process is the storage in cloud space. Using an open-source software, the space is limited to 100 MB.…”

Section: Discussionmentioning

confidence: 99%

Augmented reality as a new perspective in Dentistry: development of a complementary tool

Santos

Rosa²,

Leite

et al. 2016

Rev ABENO

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O objetivo desse trabalho é introduzir uma ferramenta de visualização e interação baseada em realidade aumentada (RA) em dispositivos móveis utilizando imagens volumétricas em três dimensões (3D) a partir de aquisições tomográficas reais de pacientes, e descrever os passos para o preparo dos modelos para tais visualizações tridimensionais. A RA foi construída correlacionando imagens tomográficas e programas de computador livres, na seguinte sequência: (1) imagem adquirida, que consiste em imagens mutiplanares que podem ser visualizadas como renderizações 3D e são a base para a construção de superfícies poligonais de estruturas anatômicas específicas de interesse, (2) criação dos modelos volumétricos, passo no qual o modelo 3D pode ser salvo e exportado como uma malha poligonal 3D em formato de arquivo .stl, (3)simplificação do modelo, que deve ser executada com a finalidade de simplificar a matriz de superfícies poligonais e consequentemente reduzir os megabytes do modelo, e (4) criação do projeto de realidade aumentada. Essa abordagem facilita a visualização do modelo tomográfico, dando a localização precisa de estruturas e anormalidades, como dentes supranumerários, fraturas ósseas e assimetrias. Além disso, o referido modelo pode ser salvo para múltiplias visualizações futuras. A aplicação da realidade aumentada é uma nova perspectiva em Odontologia apesar de estar em fase inicial. Pode ser criada integrando múltiplas tecnologias e apresenta grande potencial para auxiliar o ensino e a aprendizagem, e para melhorar a forma como modelos 3D originados de imagens médicas são visualizados.

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The impact of different cone beam computed tomography and multi-slice computed tomography scan parameters on virtual three-dimensional model accuracy using a highly precise ex vivo evaluation method

Cited by 14 publications

References 26 publications

Comparative morphometry of the temporomandibular joint in brachycephalic and mesocephalic cats using multislice CT and cone beam CT

Comparative morphometry of the temporomandibular joint in brachycephalic and mesocephalic cats using multislice CT and cone beam CT

Important queries for the airway analysis in cone-beam computed tomography scans: Threshold tool and voxel size protocol

Augmented reality as a new perspective in Dentistry: development of a complementary tool

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