计算机断层扫描（CT）技术在颌面部区域测量的准确性及标志点识别的可靠性：一项系统评价
Accuracy of measurements and reliability of landmark identification with computed tomography (CT) techniques in the maxillofacial area: a systematic review.
作者信息
Lou Leo, Lagravere Manuel O, Compton Sharon, Major Paul W, Flores-Mir Carlos
机构信息
Graduate Orthodontics Program, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, Canada.
出版信息
Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2007 Sep;104(3):402-11. doi: 10.1016/j.tripleo.2006.07.015. Epub 2006 Oct 27.
OBJECTIVE
The objective of this study was to evaluate the available published information on the reliability and accuracy of skeletal CT landmark identification and associated measurement accuracy through CT in the maxillofacial region.
STUDY DESIGN
Electronic databases were searched with the help of a senior health sciences librarian. Abstracts that appeared to fulfill the initial selection criteria were selected by consensus. The original articles were then retrieved and their references hand-searched for possible missing articles.
RESULTS
A total of 8 articles met the selection criteria. Differences between the magnitudes of errors of landmarks and their associated measurements were discussed.
CONCLUSIONS
It was concluded that each landmark exhibited a characteristic pattern of error that contributed to measurement inaccuracy, and with repeated practice of landmark identifications, the error can be reduced to within 0.5 mm for 2-D CT. Considerations have to be given to some of the 3-D CT reliability values because they can have diagnosis implications.
目的
本研究的目的是评估已发表的关于颌面部区域骨骼CT标志点识别的可靠性和准确性以及相关CT测量准确性的可用信息。
研究设计
在一位资深健康科学图书馆员的帮助下检索电子数据库。通过共识选择似乎符合初始选择标准的摘要。然后检索原始文章，并手动搜索其参考文献以查找可能遗漏的文章。
结果
共有8篇文章符合选择标准。讨论了标志点误差大小与其相关测量之间的差异。
结论
得出的结论是，每个标志点都呈现出一种导致测量不准确的特征性误差模式，并且通过反复练习标志点识别，二维CT的误差可降至0.5毫米以内。对于一些三维CT可靠性值必须加以考虑，因为它们可能具有诊断意义。
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