The effect of scan parameters on cone beam CT trabecular bone microstructural measurements of human mandible.
Identifieur interne : 002170 ( Main/Merge ); précédent : 002169; suivant : 002171The effect of scan parameters on cone beam CT trabecular bone microstructural measurements of human mandible.
Auteurs : N. Ibrahim ; A. Parsa ; B. Hassan ; P. Van Der Stelt ; I H A. Aartman ; D. WismeijerSource :
- Dento maxillo facial radiology [ 0250-832X ] ; 2013.
Descripteurs français
- KwdFr :
- MESH :
English descriptors
- KwdEn :
- Cadaver, Cone-Beam Computed Tomography (methods), Humans, Image Processing, Computer-Assisted (methods), Imaging, Three-Dimensional (methods), Jaw, Edentulous, Partially (diagnostic imaging), Mandible (diagnostic imaging), Mandible (ultrastructure), Radiographic Image Enhancement (methods), Rotation.
- MESH :
- diagnostic imaging : Jaw, Edentulous, Partially, Mandible.
- methods : Cone-Beam Computed Tomography, Image Processing, Computer-Assisted, Imaging, Three-Dimensional, Radiographic Image Enhancement.
- ultrastructure : Mandible.
- Cadaver, Humans, Rotation.
Abstract
The objective of this study was to investigate the effect of different cone beam CT scan parameters on trabecular bone microstructure measurements. A human mandibular cadaver was scanned using a cone beam CT (3D Accuitomo 170; J.Morita, Kyota, Japan). 20 cone beam CT images were obtained using 5 different fields of view (4×4 cm, 6×6 cm, 8×8 cm, 10×10 cm and 10×5 cm), 2 types of rotation steps (180° and 360°) and 2 scanning resolutions (standard and high). Image analysis software was used to assess the trabecular bone microstructural parameters (number, thickness and spacing). All parameters were measured twice by one trained observer. Intraclass correlation coefficients showed high intraobserver repeatability (intraclass correlation coefficient, 0.95–0.97) in all parameters across all tested scan parameters. Trabecular bone microstructural measurements varied significantly, especially in smaller fields of view (p = 0.001). There was no significant difference in the trabecular parameters when using different resolutions (number, p = 0.988; thickness, p = 0.960; spacing, p = 0.831) and rotation steps (number, p = 1.000; thickness, p = 0.954; spacing, p = 0.759). The scan field of view significantly influences the trabecular bone microstructure measurements. Rotation steps (180° or 360°) and resolution (standard or high) selections are not relevant.
PubMed: 24404603
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pubmed:24404603Le document en format XML
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<term>Humains</term>
<term>Imagerie tridimensionnelle ()</term>
<term>Mandibule (imagerie diagnostique)</term>
<term>Mandibule (ultrastructure)</term>
<term>Mâchoire partiellement édentée (imagerie diagnostique)</term>
<term>Rotation</term>
<term>Tomodensitométrie à faisceau conique ()</term>
<term>Traitement d'image par ordinateur ()</term>
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<term>Mandible</term>
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<term>Tomodensitométrie à faisceau conique</term>
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<front><div type="abstract" xml:lang="en">The objective of this study was to investigate the effect of different cone beam CT scan parameters on trabecular bone microstructure measurements. A human mandibular cadaver was scanned using a cone beam CT (3D Accuitomo 170; J.Morita, Kyota, Japan). 20 cone beam CT images were obtained using 5 different fields of view (4×4 cm, 6×6 cm, 8×8 cm, 10×10 cm and 10×5 cm), 2 types of rotation steps (180° and 360°) and 2 scanning resolutions (standard and high). Image analysis software was used to assess the trabecular bone microstructural parameters (number, thickness and spacing). All parameters were measured twice by one trained observer. Intraclass correlation coefficients showed high intraobserver repeatability (intraclass correlation coefficient, 0.95–0.97) in all parameters across all tested scan parameters. Trabecular bone microstructural measurements varied significantly, especially in smaller fields of view (p = 0.001). There was no significant difference in the trabecular parameters when using different resolutions (number, p = 0.988; thickness, p = 0.960; spacing, p = 0.831) and rotation steps (number, p = 1.000; thickness, p = 0.954; spacing, p = 0.759). The scan field of view significantly influences the trabecular bone microstructure measurements. Rotation steps (180° or 360°) and resolution (standard or high) selections are not relevant.</div>
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