Evaluation of voxel values in mandibular cancellous bone: relationship between cone-beam computed tomography and multislice helical computed tomography
| Autor: | Munetaka Naitoh, Akitoshi Katsumata, Akiko Hirukawa, Eiichiro Ariji |
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| Rok vydání: | 2009 |
| Předmět: |
Male
medicine.medical_specialty Cone beam computed tomography Materials science Bone density Radiography Mandible computer.software_genre Voxel Bone Density Reference Values Hounsfield scale medicine Humans Multislice Anatomy Cross-Sectional business.industry Dental Implantation Endosseous Radiography Dental Digital Cone-Beam Computed Tomography medicine.anatomical_structure Female Radiology Tomography Oral Surgery business Nuclear medicine Cancellous bone computer Tomography Spiral Computed Densitometry |
| Zdroj: | Clinical oral implants research. 20(5) |
| ISSN: | 1600-0501 |
| Popis: | Objective: Measurements of bone density in designed sites are important in presurgical imaging for dental implant treatment. However, the pixel or voxel values obtained from cone-beam computed tomography (CT) images are not absolute values. Hence, the relationship between voxel values obtained from cone-beam CT with a limited-volume exposure field and a flat panel detector and bone mineral densities (BMDs) obtained from multislice CT was evaluated in the mandible. Material and methods: A total of 16 (four males and 12 females) patients who had undergone imaging for mandibular dental implant treatment using cone-beam CT with Alphard VEGA and multislice CT were enrolled in this investigation. Cross-sectional images of cone-beam and multislice CT were reconstructed, and values of regions of interest (ROIs) in images were calculated. Results: A high-level correlation between voxel values of cone-beam CT and BMDs of multislice CT was observed (r=0.965). Conclusion: It was suggested that voxel values of mandibular cancellous bone in cone-beam CT could be used to estimate bone density. |
| Databáze: | OpenAIRE |
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