Abstract
BackgroundCone Beam Computed Tomography (CBCT) is a reliable radiographic modality to assess trabecular bone microarchitecture. The aim of this study was to determine the effect of CBCT image reconstruction parameters, namely, the threshold value and reconstruction voxel size, on trabecular bone microstructure assessment.MethodsFive sectioned maxilla of adult Dorper male sheep were scanned using a CBCT system with a resolution of 76 μm3 (Kodak 9000). The CBCT images were reconstructed using different reconstruction parameters and analysed. The effect of reconstruction voxel size (76, 100 and 200 μm3) and threshold values (±15% from the global threshold value) on trabecular bone microstructure measurement was assessed using image analysis software (CT analyser version 1.15).ResultsThere was no significant difference in trabecular bone microstructure measurement between the reconstruction voxel sizes, but a significant difference (Tb.N = 0.03, Tb.Sp = 0.04, Tb.Th = 0.01, BV/TV = 0.00) was apparent when the global threshold value was decreased by 15%.ConclusionsTrabecular bone microstructure measurements are not compromised by changing the CBCT reconstruction voxel size. However, measurements can be affected when applying a threshold value of less than 15% of the recommended global value.
Highlights
Cone Beam Computed Tomography (CBCT) is a reliable radiographic modality to assess trabecular bone microarchitecture
The effect of reconstruction voxel size on the assessment of trabecular bone microstructure The intra-observer reproducibility (> 0.91) and inter-rater agreement (> 0.80) of trabecular bone microstructure measurements were excellent for all parameters (Tables 1 and 2)
The findings indicated no differences in trabecular bone measurements between different reconstructed images
Summary
Cone Beam Computed Tomography (CBCT) is a reliable radiographic modality to assess trabecular bone microarchitecture. Assessment of trabecular bone microstructure from CBCT images prior to implant surgery is a growing treatment planning protocol to ensure successful placement and clinical longevity of the dental implants [1]. This is because the trabecular bone microstructure has been shown to have major effects on primary stability during implant placement [2, 3]. A larger image reconstruction voxel size than the actual image acquisition voxel size is usually used to reduce the reconstruction time and to reduce computational expenses [5]. The effect on trabecular bone microstructure measurements remains unknown
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
