Volumetry of bone grafts by three-dimensional computed tomographic reconstruction: an animal study in the minipig
| Autor: | S Sindet-Pedersen, Ann Wenzel, J Kragskov, John Jensen |
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| Rok vydání: | 1998 |
| Předmět: |
medicine.medical_specialty
Materials science Swine Slice thickness Mandible Computed tomographic Animal model Alveolar Process Image Processing Computer-Assisted medicine Alveolar ridge Animals Mandibular Diseases Radiology Nuclear Medicine and imaging Animal study General Dentistry Fixation (histology) Bone Transplantation business.industry Water General Medicine Surgery Oral Surgery Otorhinolaryngology Swine Miniature Tomography Tomography X-Ray Computed Graft volume Nuclear medicine business |
| Zdroj: | Dentomaxillofacial Radiology. 27:41-44 |
| ISSN: | 1476-542X 0250-832X |
| DOI: | 10.1038/sj.dmfr.4600319 |
| Popis: | OBJECTIVES To evaluate the accuracy of 3D-CT reconstruction for determination of bone graft volume in an animal model. MATERIALS AND METHODS Eight minipigs had bone graft reconstruction of an alveolar ridge defect. The true volume of the graft (VOL I) was determined by Archimedes principle before reconstruction. Following fixation, axial CT-scans (1 mm slice thickness with 50% overlap) were performed and segmented into grafted and residual bone for 3D-reconstruction. Using the volume tool of the 3D program the volume (VOL II) was calculated. RESULTS There was a strong correlation between VOL I and VOL II (r = 0.93, P = 0.001). There was a tendency, which was not statistically significant, to overestimate the volume measured by 3D-CT. CONCLUSION The volume of a bone graft can be determined by 3D-CT. However, further refinements of the technique are needed to improve the accuracy. |
| Databáze: | OpenAIRE |
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