Dimensional measurement accuracy of 3-dimensional models from cone beam computed tomography using different voxel sizes.
Oral Surg Oral Med Oral Pathol Oral Radiol
; 132(3): 361-369, 2021 09.
Article
em En
| MEDLINE
| ID: mdl-34246615
ABSTRACT
OBJECTIVES:
To compare the geometric accuracy and measurement reliability of 3-dimensional (3D) reconstructed models of the mandible created from cone beam computed tomography (CBCT) images obtained with 0.2-mm and 0.4-mm voxel sizes with the reference standard model and compare the accuracy of the CBCT-based models to each other. STUDYDESIGN:
The reference standard 3D model of a dry human mandible was obtained using a white light scanner. The mandible was scanned with CBCT 10 times at each voxel size. The models created from the CBCT data were compared with the reference standard by using a point-based rigid registration algorithm where the distance differences between the superimposed CBCT models and the reference standard model were recorded. The measurements derived from the 2 CBCT-based scans were also compared.RESULTS:
Mean deviations from the reference standard for 0.2-mm and 0.4-mm voxel scans were 0.4342 mm and 0.4580 mm, respectively (P ≥ .16). The CBCT scans with both 0.2-mm and 0.4-mm voxels produced good measurement reliability and did not significantly differ from each other (P ≥ .20).CONCLUSIONS:
CBCT scans with 0.2-mm and 0.4-mm voxel sizes delivered similarly accurate models. Larger voxels can be used to minimize radiation exposure.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Imageamento Tridimensional
/
Tomografia Computadorizada de Feixe Cônico
Tipo de estudo:
Prognostic_studies
Limite:
Humans
Idioma:
En
Revista:
Oral Surg Oral Med Oral Pathol Oral Radiol
Ano de publicação:
2021
Tipo de documento:
Article
País de afiliação:
Índia