Al-Aubaidi Zaid, Lebel David, Oudjhane Kamaldine, Zeller Reinhard
Department of Orthopedics, Odense University Hospital, Odense C, Denmark.
J Pediatr Orthop B. 2013 Sep;22(5):409-12. doi: 10.1097/BPB.0b013e328361ae5b.
The aim of this study was to evaluate the precision of three-dimensional geometry compared with computed tomography (CT) images. This retrospective study included patients who had undergone both imaging of the spine using the EOS imaging system and CT scanning of the spine. The apical vertebral orientation was also measured using the EOS imaging system and by CT. Other measures such as the Cobb angle and apical vertebral rotation and translation were used as the control variables to evaluate the potential discrepancy between the standing position in EOS imaging and the supine position in CT scanning. The apical vertebral orientations were 8.7° for the first measurement and 8.4° for the second measurement made by the first author, and 10.3° for the measurement made by the second author. The average of these measurements was 9.3° compared with 6.6° (P=0.65) obtained on CT scanning. The precision of EOS-based measurements of vertebral rotation has never been tested in clinical practice. Although it has limitations, this study suggests that the results obtained using EOS are comparable to those obtained on CT.
本研究的目的是评估三维几何结构与计算机断层扫描（CT）图像相比的精度。这项回顾性研究纳入了既接受过使用EOS成像系统进行脊柱成像又接受过脊柱CT扫描的患者。还使用EOS成像系统和CT测量了顶椎方向。其他测量指标，如Cobb角、顶椎旋转和移位，用作对照变量，以评估EOS成像中的站立位与CT扫描中的仰卧位之间的潜在差异。第一作者进行的第一次测量中顶椎方向为8.7°，第二次测量为8.4°，第二作者进行的测量为10.3°。这些测量的平均值为9.3°，而CT扫描获得的值为6.6°（P = 0.65）。基于EOS的椎体旋转测量精度在临床实践中从未得到过测试。尽管它有局限性，但本研究表明，使用EOS获得的结果与CT获得的结果具有可比性。
