上海口腔医学

上海口腔医学 ›› 2021, Vol. 30 ›› Issue (5): 522-525.doi: 10.19439/j.sjos.2021.05.014

• 论著 • 上一篇    下一篇

2种锥形束CT转化头颅侧位片的定点一致性探讨

马晓晴1, 赵宁2, 董晛3, 钱文昊1   

  1. 1.上海市徐汇区牙病防治所 口腔正畸科,上海 200032;
    2.上海交通大学医学院附属第九人民医院 口腔正畸科,上海 200011;
    3.上海健康医学院,上海 201318
  • 收稿日期:2020-01-31 修回日期:2020-03-26 出版日期:2021-10-25 发布日期:2021-11-08
  • 通讯作者: 钱文昊,E-mail:pingyanlaoto@163.com
  • 作者简介:马晓晴（1978-）,男,硕士,副主任医师,E-mail:mxq780927@163.com
  • 基金资助:
    2017年徐汇区医学尖峰学科（SHXH201706）; 上海市医学重点专科项目（ZK2019B12）; 徐汇区医学科研项目（SHXH201915）

Consistency of the landmark identification on two types of cephalograms from cone-beam CT

MA Xiao-qing1, ZHAO Ning2, DONG Xian3, QIAN Wen-hao1   

  1. 1. Department of Orthodontics, Shanghai Xuhui District Dental Center. Shanghai 200032;
    2. Department of Orthodontics, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine. Shanghai 200011;
    3. Shanghai University of Medicine & Health Sciences. Shanghai 201318, China
  • Received:2020-01-31 Revised:2020-03-26 Online:2021-10-25 Published:2021-11-08

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摘要： 目的: 采用2种方式将头颅锥形束CT（cone-beam CT,CBCT）数据转化为头颅侧位片,对比2组定点分析的一致性。方法: 利用Dolphin软件将56例牙列完整患者的头颅CBCT数据转换为侧位片,对照组一次性投照右半侧,实验组分别对右侧6个部位投照,形成组合式侧位片。由1名资深正畸医师对23个常用标志点分别进行描迹,采用SPSS 13.0软件包中的Hotelling T2检验分析2组定点的一致性。结果: 前鼻脊点、后鼻脊点、上切牙根尖点、下切缘点、下切牙根尖点、髁突点的定点差异具有统计学意义（P<0.05）。结论: 组合式侧位片能更清晰地显示所需检测的解剖结构,测量的准确性更优。

关键词: 锥形束CT, 头颅侧位片, 描迹

Abstract: PURPOSE: To study the landmark consistency on two types of cephalograms reconstructed from the data of cone-beam CT(CBCT). METHODS: CBCT data of 56 patients without teeth missing were uploaded into Dolphin software and transferred to the cephalograms. In the control group, the right half projection was taken while in the experimental group, the images achieved after 6 individual projections were managed to achieve the synthesized cephalograms. One experienced orthodontists traced the 23 frequently-used landmarks and the consistency was compared by means of Hotelling T2 test with SPSS 13.0 software package. RESULTS: The tracing of anterior nasal ridge, posterior nasal ridge, upper incisor root tip, lower incisor edge, lower incisor root tip and condyle showed significant difference(P<0.05). CONCLUSIONS: The synthesized cephalograms in the experimental group show the anatomical structure more precisely which is more beneficial to landmark identification.

Key words: Cone-beam CT, Cephalogram, Tracing

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