Accuracy of CBCT Measurements of a Human Skull

• Published in: Journal of digital imaging 2011-10, Vol.24 (5), p.787-793
• Main Authors: Kamburoğlu, Kıvanç, Kolsuz, Eray, Kurt, Hakan, Kılıç, Cenk, Özen, Tuncer, Semra Paksoy, Candan
• Format: Article
• Language: English
• Subjects: Accuracy; Calipers; Cephalometry - methods; Cone-Beam Computed Tomography; Digital; Human; Humans; Imaging; Medicine; Medicine & Public Health; Observer Variation; Observers; Radiology; Reproducibility of Results; Skull; Skull - anatomy & histology; Skull - diagnostic imaging; Three dimensional
• ISSN: 0897-1889; 1618-727X
• DOI: 10.1007/s10278-010-9339-9

The purpose of this study is to assess the accuracy and reproducibility of cone-beam computed tomography (CBCT) measurements of a human dry skull by comparing them to direct digital caliper measurements. Heated gutta-percha was used to mark 13 specific distances on a human skull, and the distances were directly measured using a digital caliper and on CBCT images obtained with Iluma (3M Imtec, OK, USA) and 3D Accuitomo 170 (3D Accuitomo; J Morita Mfg. Corp., Kyoto, Japan) CBCT imaging systems. Iluma images were obtained at 120 kVp and 3.8 mA and reconstructed using voxel sizes of 0.2 and 0.3 mm 3 . Accuitomo images were obtained at 60 kVp and 2 mA and a voxel size of 0.250 mm 3 . In addition, 3-D reconstructions were produced from images obtained from both systems. All measurements were made independently by three trained observers and were repeated after an interval of 1 week. Agreement between observers and image type was assessed by calculating Pearson correlation coefficients, with a level of significance set at p