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  1. NTU Theses and Dissertations Repository
  2. 工學院
  3. 機械工程學系
請用此 Handle URI 來引用此文件: http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/66912
完整後設資料紀錄
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dc.contributor.advisor鍾添東
dc.contributor.authorCheng-Kai Yuanen
dc.contributor.author袁承楷zh_TW
dc.date.accessioned2021-06-17T01:14:43Z-
dc.date.available2018-04-18
dc.date.copyright2018-04-18
dc.date.issued2017
dc.date.submitted2017-08-14
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dc.identifier.urihttp://tdr.lib.ntu.edu.tw/jspui/handle/123456789/66912-
dc.description.abstract本研究之目的為開發電腦輔助設計(CAD)建模工具以建立人體組織三維生物列印模型,並應用在生物醫學領域。首先,以AutoCAD、Visual LISP和DCL語言開發一三維重建工具,以橫截面重建人體組織(包括冠狀動脈、動脈和氣管)之模型。該工具可將橫截面進行曲線擬合,並將各橫截面連接,以產生擬真並具有所需管壁厚度的模型。同時,該工具也可將各橫截面的形心連結產生一條路徑,並使用圓形截面掃略該路徑以建立具更平整表面之簡化模型。除了開發該三維重建工具外,本研究亦開發參數化建模工具,從數學模型建立非球面和非對稱的眼角膜模型。該工具能從輸入的量測參數,建立分層且厚度可設定的角膜模型。最後,本研究開發一程式以處理角膜地形儀之原始資料,並建立一擬真角膜模型。該程式首先由原始資料計算出三維座標並產生一個點資料雲,再藉由該點資料雲建立出角膜之三維模型。藉由本研究開發之工具和程式,建模過程變得自動化且有效率。只要在所開發的工具或程式中設定參數,就能建立擬真或參數化的模型。本研究建立之人體組織模型在生物醫學領域有廣泛的應用,包括人工組織列印、光學模擬、術前規劃和氣流實驗。zh_TW
dc.description.abstractThe purpose of this study is to develop computer-aided design (CAD) tools to construct 3D bio-printing models of human tissues for biomedical applications. First, a 3D reconstruction tool is developed based on AutoCAD, Visual LISP, and DCL language to construct human tissues (e.g., coronary artery, arteries, and trachea) models from cross sections. The tool can construct mimic models with desired wall thickness by curve-fitting the cross sections and linking them together. Meanwhile, the tool can construct simplified models with more smooth surface by sweeping a circle region over a path which is created by linking the centroids of all cross sections. Beside the 3D reconstruction tool, parametric modeling tools are also designed to construct aspherical and asymmetric cornea models based on mathematical models. The tools would construct layered cornea models with desired thickness by setting measured parameters. Finally, a program is written to process corneal topography raw data and construct a mimic cornea model. The program would first calculate 3D coordinates from the raw data to generate a point cloud and then construct a model based on it. With the developed tools and programs, modeling process becomes both automatic and efficient. Mimic models or parametric models can be constructed by simply setting parameters in the user interface of the tools and programs. The constructed models have a wide range of biomedical applications, including artificial tissue printing, optical simulation, preoperative planning, and gas flow experiments.en
dc.description.provenanceMade available in DSpace on 2021-06-17T01:14:43Z (GMT). No. of bitstreams: 1
ntu-106-R04522621-1.pdf: 6342908 bytes, checksum: 34c421e8d371d26df2f38501c24d5adb (MD5)
Previous issue date: 2017
en
dc.description.tableofcontents國立臺灣大學碩士學位論文口試委員會審定書 i
誌謝 ii
中文摘要 iii
ABSTRACT iv
CONTENTS v
LIST OF FIGURES viii
LIST OF TABLES xiii
Chapter 1 Introduction 1
1.1 Background 1
1.2 Literature review 2
1.3 Research motivation 7
1.4 Thesis outline 9
Chapter 2 Medical imaging, modeling methods and structure of human tissues …………………………………………………………………………………. 10
2.1 Medical imaging 10
2.1.1 Computed tomography (CT) scan 10
2.1.2 Corneal topography 11
2.2 Parametric modeling and parametric design 13
2.3 Two local view method 15
2.4 3D reconstruction from multiple images or 2D cross sections 17
2.5 3D reconstruction from point cloud 18
2.6 Dimensions and geometry of human blood vessels 19
2.7 Structure and dimensions of human trachea 23
2.8 Structure and shape of human cornea 26
2.8.1 Corneal structure 26
2.8.2 Corneal shape 27
Chapter 3 CAD modeling of human blood vessels and trachea 31
3.1 Parametric modeling of human coronary artery 31
3.2 3D reconstruction processes and development of an automatic 3D reconstruction tool 33
3.2.1 3D reconstruction from multiple images 34
3.2.2 Getting cross sections 36
3.2.3 3D reconstruction from 2D cross sections and development of an automatic 3D reconstruction tool 38
3.2.4 Construct hollow models 39
3.2.5 Construct solid models 42
3.2.6 Construct simplified models 42
3.3 3D reconstruction of human blood vessels 43
3.4 3D reconstruction of human trachea 46
3.5 Application of coronary artery and trachea models on medical treatment and research 48
Chapter 4 CAD modeling of human cornea 51
4.1 Parametric modeling of aspherical cornea 51
4.2 Parametric modeling of asymmetric cornea 55
4.3 Modeling of cornea with two local view method 58
4.4 3D reconstruction of cornea with topographic data 59
4.5 Optical simulation with cornea 63
4.6 Application of cornea models 65
Chapter 5 Conclusions and suggestions 67
5.1 Conclusions 67
5.2 Suggestions 69
REFERENCES 70
Appendix A User Manual of Automatic 3D Reconstruction Tool 73
Appendix B User Manual of ImageJ 76
Appendix C User Manual of Parametric Modeling Tool of Aspherical Cornea 81
Appendix D User Manual of Parametric Modeling Tool of Asymmetric Cornea 83
Vitae 作者簡歷 85
dc.language.isoen
dc.subject電腦輔助設計模型建構zh_TW
dc.subject三維重建zh_TW
dc.subject參數化建模zh_TW
dc.subject三維生物列印zh_TW
dc.subject角膜地形圖zh_TW
dc.subjectCAD modelingen
dc.subjectcorneal topographyen
dc.subject3D bio-printingen
dc.subjectparametric modelingen
dc.subject3D reconstructionen
dc.title人體組織三維生物列印之電腦輔助設計模型建構zh_TW
dc.titleCAD Modeling for 3D Bio-printing of Human Tissuesen
dc.typeThesis
dc.date.schoolyear105-2
dc.description.degree碩士
dc.contributor.oralexamcommittee顏家鈺,劉正良
dc.subject.keyword電腦輔助設計模型建構,三維重建,參數化建模,三維生物列印,角膜地形圖,zh_TW
dc.subject.keywordCAD modeling,3D reconstruction,parametric modeling,3D bio-printing,corneal topography,en
dc.relation.page85
dc.identifier.doi10.6342/NTU201703316
dc.rights.note有償授權
dc.date.accepted2017-08-15
dc.contributor.author-college工學院zh_TW
dc.contributor.author-dept機械工程學研究所zh_TW
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