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Patient-specific modeling of facial soft tissue based on radial basis functions transformations of a standard three-dimensional finite element model
Lou Hang-di1; Chen Si2; Chen Gui2; Xu Tian-min2; Rong Qi-guo1
关键词finite element model facial soft tissue model transformation radial basis functions landmark points
刊名CHINESE MEDICAL JOURNAL
2012-11-20
DOI10.3760/cma.j.issn.0366-6999.2012.22.028
125期:22页:4066-4071
收录类别SCI
文章类型Article
WOS标题词Science & Technology
类目[WOS]Medicine, General & Internal
研究领域[WOS]General & Internal Medicine
关键词[WOS]MAXILLOFACIAL SURGERY ; SCATTERED DATA ; INTERPOLATION ; DEFORMATION ; RETRACTION
英文摘要

Background An important purpose of orthodontic treatment is to gain the harmonic soft tissue profile. This article describes a novel way to build patient-specific models of facial soft tissues by transforming a standard finite element (FE) model into one that has two stages: a first transformation and a second transformation, so as to evaluate the facial soft tissue changes after orthodontic treatment for individual patients.

Methods The radial basis functions (RBFs) interpolation method was used to transform the standard FE model into a patient-specific one based on landmark points. A combined strategy for selecting landmark points was developed in this study: manually for the first transformation and automatically for the second transformation. Four typical patients were chosen to validate the effectiveness of this transformation method.

Results The results showed good similarity between the transformed FE models and the computed tomography (CT) models. The absolute values of average deviations were in the range of 0.375-0.700 mm at the lip-mouth region after the first transformation, and they decreased to a range of 0.116-0.286 mm after the second transformation.

Conclusions The modeling results show that the second transformation resulted in enhanced accuracy compared to the first transformation. Because of these results, a third transformation is usually not necessary. Chin Med J 2012;125(22):4066-4071

语种英语
WOS记录号WOS:000312748100029
项目编号30672350 ; 10872007
资助机构National Natural Science Foundation of China
引用统计
被引频次:3[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.bjmu.edu.cn/handle/400002259/66019
专题北京大学口腔医学院
北京大学口腔医学院_口腔正畸科
作者单位1.Peking Univ, Coll Engn, Beijing 100081, Peoples R China
2.Peking Univ, Sch Stomatol, Beijing 100081, Peoples R China
推荐引用方式
GB/T 7714
Lou Hang-di,Chen Si,Chen Gui,et al. Patient-specific modeling of facial soft tissue based on radial basis functions transformations of a standard three-dimensional finite element model[J]. CHINESE MEDICAL JOURNAL,2012,125(22):4066-4071.
APA Lou Hang-di,Chen Si,Chen Gui,Xu Tian-min,&Rong Qi-guo.(2012).Patient-specific modeling of facial soft tissue based on radial basis functions transformations of a standard three-dimensional finite element model.CHINESE MEDICAL JOURNAL,125(22),4066-4071.
MLA Lou Hang-di,et al."Patient-specific modeling of facial soft tissue based on radial basis functions transformations of a standard three-dimensional finite element model".CHINESE MEDICAL JOURNAL 125.22(2012):4066-4071.
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