Automated segmentation of CBCT image using spiral CT atlases and convex optimization.
Cone-beam computed tomography (CBCT) is an increasingly utilized imaging modality for the diagnosis and treatment planning of the patients with craniomaxillofacial (CMF) deformities. CBCT scans have relatively low cost and low radiation dose in comparison to conventional spiral CT scans. However, a major limitation of CBCT scans is the widespread image artifacts such as noise, beam hardening and inhomogeneity, causing great difficulties for accurate segmentation of bony structures from soft tissues, as well as separating mandible from maxilla. In this paper, we presented a novel fully automated method for CBCT image segmentation. In this method, we first estimated a patient-specific atlas using a sparse label fusion strategy from predefined spiral CT atlases. This patient-specific atlas was then integrated into a convex segmentation framework based on maximum a posteriori probability for accurate segmentation. Finally, the performance of our method was validated via comparisons with manual ground-truth segmentations.
Duke Scholars
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DOI
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Related Subject Headings
- Young Adult
- Spiral Cone-Beam Computed Tomography
- Sensitivity and Specificity
- Reproducibility of Results
- Radiographic Image Interpretation, Computer-Assisted
- Radiographic Image Enhancement
- Pattern Recognition, Automated
- Middle Aged
- Maxillofacial Abnormalities
- Male
Citation
Published In
DOI
Publication Date
Volume
Issue
Start / End Page
Location
Related Subject Headings
- Young Adult
- Spiral Cone-Beam Computed Tomography
- Sensitivity and Specificity
- Reproducibility of Results
- Radiographic Image Interpretation, Computer-Assisted
- Radiographic Image Enhancement
- Pattern Recognition, Automated
- Middle Aged
- Maxillofacial Abnormalities
- Male