A comparative evaluation of Cone Beam Computed Tomography (CBCT) and Multi-Slice CT (MSCT). Part II: On 3D model accuracy

作者：Liang, Xin^*; Lambrichts, Ivo; Sun, Yi; Denis, Kathleen; Hassan, Bassam; Li, Limin; Pauwels, Ruben; Jacobs, Reinhilde

来源：European Journal of Radiology, 2010, 75(2): 270-274.

DOI：10.1016/j.ejrad.2009.04.016

• Cone Beam CT
• Dentomaxillofacial
• Accuracy
• Mandible

Aim: The study aim was to compare the geometric accuracy of three-dimensional (3D) surface model reconstructions between five Cone Beam Computed Tomography (CBCT) scanners and one Multi-Slice CT (MSCT) system.
Materials and methods: A dry human mandible was scanned with five CBCT systems (NewTom 3G, Accuitomo 3D, i-CAT, Galileos, Scanora 3D) and one MSCT scanner (Somatom Sensation 16). A 3D surface bone model was created from the six systems. The reference (gold standard) 3D model was obtained with a high resolution laser surface scanner. The 3D models from the five systems were compared with the gold standard using a point-based rigid registration algorithm.
Results: The mean deviation from the gold standard for MSCT was 0.137 mm and for CBCT were 0.282, 0.225, 0.165, 0.386 and 0.206 mm for the i-CAT, Accuitomo, NewTom, Scanora and Galileos, respectively.
Conclusion: The results show that the accuracy of CBCT 3D surface model reconstructions is somewhat lower but acceptable comparing to MSCT from the gold standard.

• 出版日期2010-8
• 单位大连医科大学