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
en 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
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Imagenología Tridimensional
/
Tomografía Computarizada de Haz Cónico
Tipo de estudio:
Prognostic_studies
Límite:
Humans
Idioma:
En
Revista:
Oral Surg Oral Med Oral Pathol Oral Radiol
Año:
2021
Tipo del documento:
Article
País de afiliación:
India