Department of Orthodontics and Oral Biology, Radboud University Nijmegen Medical Centre, P O Box 9101, 6500 HB Nijmegen, The Netherlands.
Clin Oral Investig. 2011 Oct;15(5):721-7. doi: 10.1007/s00784-010-0440-8. Epub 2010 Jul 17.
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.
本研究的目的是比较两种不同锥形束 CT 扫描仪（CBCT）得出的人类颅骨三维（3D）模型的测量结果，并评估所使用的硬件是否会影响测量结果。对 40 个干燥的人类颅骨进行了 i-CAT 和 Iluma 锥形束 CT 扫描仪的 CBCT 扫描。从 CBCT 扫描中构建了 3D 模型。一位操作人员在两周的时间间隔内，在两种类型的 3D 模型上五次识别了 19 个标志点。大多数测量的观察者内可靠性都很高。同一颅骨的两种不同 CBCT 设备构建的 3D 模型之间的一些测量值存在统计学上显著且临床相关的差异。扫描使用的硬件可能会影响测量结果。这意味着，当解释来自不同 CBCT 设备的 CBCT 3D 模型得出的测量结果时，应该谨慎。
