Measurements on 3D models of human skulls derived from two different cone beam CT scanners

Clin Oral Investig. 2011 Oct;15(5):721-7. doi: 10.1007/s00784-010-0440-8. Epub 2010 Jul 17.

Abstract

The aims of this study were to compare measurements on three-dimensional (3D) models of human skulls derived from two different cone beam CT scanners (CBCT) and to evaluate if the used hardware can influence the performed measurements. CBCT scans of 40 dry human skulls with both the i-CAT and the Iluma cone beam CT scanners were made. From the CBCT scans, 3D models were constructed. One operator identified 19 landmarks five times on both types of 3D models with a time interval of 1 week. Intra-observer reliability was high for most measurements. There was a statistically significant and clinically relevant difference for some measurements between constructed 3D models of the same skull from the two different CBCT devices. Used hardware for scanning might influence the measurements performed. This means that care should be taken when interpreting measurements made on CBCT 3D models derived from different CBCT devices.

Publication types

  • Comparative Study

MeSH terms

  • Anatomic Landmarks / anatomy & histology
  • Anatomic Landmarks / diagnostic imaging
  • Cephalometry / methods*
  • Cephalometry / standards
  • Chin / anatomy & histology
  • Chin / diagnostic imaging
  • Cone-Beam Computed Tomography / instrumentation*
  • Cone-Beam Computed Tomography / methods
  • Dental Occlusion
  • Humans
  • Image Processing, Computer-Assisted / methods
  • Image Processing, Computer-Assisted / standards
  • Imaging, Three-Dimensional / methods*
  • Incisor / anatomy & histology
  • Incisor / diagnostic imaging
  • Mandible / anatomy & histology
  • Mandible / diagnostic imaging
  • Mandibular Condyle / anatomy & histology
  • Mandibular Condyle / diagnostic imaging
  • Maxilla / anatomy & histology
  • Maxilla / diagnostic imaging
  • Models, Anatomic*
  • Molar / anatomy & histology
  • Molar / diagnostic imaging
  • Nasal Bone / anatomy & histology
  • Nasal Bone / diagnostic imaging
  • Observer Variation
  • Orbit / anatomy & histology
  • Orbit / diagnostic imaging
  • Palate, Hard / anatomy & histology
  • Palate, Hard / diagnostic imaging
  • Reproducibility of Results
  • Sella Turcica / anatomy & histology
  • Sella Turcica / diagnostic imaging
  • Skull / anatomy & histology
  • Skull / diagnostic imaging*
  • Sphenoid Bone / anatomy & histology
  • Sphenoid Bone / diagnostic imaging
  • Temporal Bone / anatomy & histology
  • Temporal Bone / diagnostic imaging
  • Tomography Scanners, X-Ray Computed / classification*