Using additive manufacturing in accuracy evaluation of reconstructions from computed tomography
| Autor: | Gabriel Venne, Erin Janine Smith, Randy E. Ellis, Joseph A Anstey |
|---|---|
| Rok vydání: | 2013 |
| Předmět: |
Rapid prototyping
Models Anatomic Engineering Laser scanning Surgical planning Sensitivity and Specificity Bone and Bones Imaging Three-Dimensional Cadaver medicine Humans Segmentation Computer Simulation Periosteum Reproducibility business.industry Shoulder Joint Mechanical Engineering Reproducibility of Results General Medicine Image segmentation medicine.anatomical_structure Computer-Aided Design Radiographic Image Interpretation Computer-Assisted Hip Joint business Tomography X-Ray Computed Biomedical engineering |
| Zdroj: | Proceedings of the Institution of Mechanical Engineers. Part H, Journal of engineering in medicine. 227(5) |
| ISSN: | 2041-3033 |
| Popis: | Bone models derived from patient imaging and fabricated using additive manufacturing technology have many potential uses including surgical planning, training, and research. This study evaluated the accuracy of bone surface reconstruction of two diarthrodial joints, the hip and shoulder, from computed tomography. Image segmentation of the tomographic series was used to develop a three-dimensional virtual model, which was fabricated using fused deposition modelling. Laser scanning was used to compare cadaver bones, printed models, and intermediate segmentations. The overall bone reconstruction process had a reproducibility of 0.3 ± 0.4 mm. Production of the model had an accuracy of 0.1 ± 0.1 mm, while the segmentation had an accuracy of 0.3 ± 0.4 mm, indicating that segmentation accuracy was the key factor in reconstruction. Generally, the shape of the articular surfaces was reproduced accurately, with poorer accuracy near the periphery of the articular surfaces, particularly in regions with periosteum covering and where osteophytes were apparent. |
| Databáze: | OpenAIRE |
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