Characterizing the skull base in craniofacial microsomia using principal component analysis
| Autor: | Britt I. Pluijmers, S. C. Schaal, David Dunaway, Clifford Ruff, Erwin Pauws, Maarten J. Koudstaal, Caspar W. N. Looman |
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| Přispěvatelé: | Oral and Maxillofacial Surgery, Public Health |
| Rok vydání: | 2017 |
| Předmět: |
Male
Mastoid process Fossa 03 medical and health sciences Goldenhar Syndrome 0302 clinical medicine Craniofacial microsomia Humans Medicine Child Skull Base Principal Component Analysis biology business.industry 030206 dentistry Anatomy Normal skull biology.organism_classification Skull medicine.anatomical_structure Otorhinolaryngology Point distribution model Case-Control Studies 030220 oncology & carcinogenesis Principal component analysis Female Surgery Anatomic Landmarks Oral Surgery Tomography X-Ray Computed business Facial symmetry |
| Zdroj: | International Journal of Oral and Maxillofacial Surgery, 46(12), 1656-1663. Churchill Livingstone |
| ISSN: | 0901-5027 |
| DOI: | 10.1016/j.ijom.2017.07.008 |
| Popis: | The aim of this study was to compare the anatomical differences in the skull base between the affected and non-affected side in patients with craniofacial microsomia (CFM), and to compare the affected and non-affected sides with measurements from a normal population. Three-dimensional computed tomography scans of 13 patients with unilateral CFM and 19 normal patients (age range 7-12 years) were marked manually with reliable homologous landmarks. Principal component analysis (PCA), as part of a point distribution model (PDM), was used to analyse the variability within the normal and preoperative CFM patient groups. Through analysis of the differences in the principal components calculated for the two groups, a model was created to describe the differences between CFM patients and normal age-matched controls. The PDMs were also used to describe the shape changes in the skull base between the cohorts and validated this model. Using thin-plate splines as a means of interpolation, videos were created to visualize the transformation from CFM skull to normal skull, and to display the variability in shape changes within the groups themselves. In CFM cases, the skull base showed significant asymmetry. Anatomical areas around the glenoid fossa and mastoid process showed the most asymmetry and restriction of growth, suggesting a pathology involving the first and second pharyngeal arches. |
| Databáze: | OpenAIRE |
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