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学科主题: 口腔医学
题名:
Comparison of linear measurements between CBCT orthogonally synthesized cephalograms and conventional cephalograms
作者: Yang, S.1; Liu, D. G.2; Gu, Y.1
关键词: Cone beam computed tomography ; orthodontics ; measurement
刊名: DENTOMAXILLOFACIAL RADIOLOGY
发表日期: 2014-10-01
DOI: 10.1259/dmfr.20140024
卷: 43, 期:7
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology
类目[WOS]: Dentistry, Oral Surgery & Medicine ; Radiology, Nuclear Medicine & Medical Imaging
研究领域[WOS]: Dentistry, Oral Surgery & Medicine ; Radiology, Nuclear Medicine & Medical Imaging
关键词[WOS]: BEAM COMPUTED-TOMOGRAPHY ; CEPHALOMETRIC RADIOGRAPHY ; ANGULAR MEASUREMENTS ; IN-VIVO ; IMAGES ; ACCURACY ; 3D ; 2D
英文摘要:

Objectives: The purposes of the study are to investigate the consistency of linear measurements between CBCT orthogonally synthesized cephalograms and conventional cephalograms and to evaluate the influence of different magnifications on these comparisons based on a simulation algorithm.

Methods: Conventional cephalograms and CBCT scans were taken on 12 dry skulls with spherical metal markers. Orthogonally synthesized cephalograms were created from CBCT data. Linear parameters on both cephalograms were measured via Photoshop CS v. 5.0 (Adobe (R) Systems, San Jose, CA), named measurement group (MG). Bland-Altman analysis was utilized to assess the agreement of two imaging modalities. Reproducibility was investigated using paired t-test. By a specific mathematical programme "cepha", corresponding linear parameters [mandibular corpus length (Go-Me), mandibular ramus length (Co-Go), posterior facial height (Go-S)] on these two types of cephalograms were calculated, named simulation group (SG). Bland-Altman analysis was used to assess the agreement between MG and SG. Simulated linear measurements with varying magnifications were generated based on "cepha" as well. Bland-Altman analysis was used to assess the agreement of simulated measurements between two modalities.

Results: Bland-Altman analysis suggested the agreement between measurements on conventional cephalograms and orthogonally synthesized cephalograms, with a mean bias of 0.47 mm. Comparison between MG and SG showed that the difference did not reach clinical significance. The consistency between simulated measurements of both modalities with four different magnifications was demonstrated.

Conclusions: Normative data of conventional cephalograms could be used for CBCT orthogonally synthesized cephalograms during this transitional period.

语种: 英语
WOS记录号: WOS:000342689100003
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.bjmu.edu.cn/handle/400002259/51321
Appears in Collections:北京大学口腔医学院_牙周科_期刊论文

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作者单位: 1.Peking Univ, Dept Orthodont, Sch & Hosp Stomatol, Beijing 100871, Peoples R China
2.Peking Univ, Dept Oral Radiol, Sch & Hosp Stomatol, Beijing 100871, Peoples R China

Recommended Citation:
Yang, S.,Liu, D. G.,Gu, Y.. Comparison of linear measurements between CBCT orthogonally synthesized cephalograms and conventional cephalograms[J]. DENTOMAXILLOFACIAL RADIOLOGY,2014,43(7).
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