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研究生:陳信君
研究生(外文):Hsin-chun Chen
論文名稱:快速製作口腔生物模型之研究
論文名稱(外文):Research on rapid fabrication of oral biological models
指導教授:鄭逸琳
指導教授(外文):Yih-Lin Cheng
口試委員:鄭逸琳
口試日期:2012-07-04
學位類別:碩士
校院名稱:國立臺灣科技大學
系所名稱:機械工程系
學門:工程學門
學類:機械工程學類
論文種類:學術論文
論文出版年:2012
畢業學年度:100
語文別:中文
論文頁數:127
中文關鍵詞:電腦斷層掃描快速原型上顎竇
外文關鍵詞:Computed Tomographyrapid prototypingmaxillary sinus
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電腦斷層掃描所取得的影像可藉由醫學軟體將其重建出3D CAD,並且可經由快速原型技術建立出生物模型,然而口腔所取得的影像高達數百張,於重建3D CAD過程中非常耗費時間,對於極需動刀的病患不利於等待術前模擬的模型應用。因此,本研究宗旨在於改善影像編輯模式達到快速製作口腔生物模型。
先前的研究以閥值1150HU用於下顎骨及牙齒編輯可得最佳CAD影像,但實際測試發現無法應用於上顎竇及上顎編輯。因此,上顎及上顎竇閥值選取過程,先從500~1100HU中以間隔200HU尋找ㄧ適當值,再縮小間隔為50HU於找到最佳閥值,發現650~700HU最為適合編輯且編輯時間也最為節省。為降低影像編輯時間,當各部位的閥值訂定後,採用非逐張編輯策略重建3D CAD,發現影像間距於1.5mm以內可大幅降低編輯時間,並維持平均誤差在0.3mm以內,所製作出的生物模型也都能應用於臨床上。本研究藉由非逐張編輯的方式及適當影像閥值的訂定成功的改善影像編輯過程達到快速製作口腔生物模型。
Computed Tomography (CT) images can be converted into a 3D CAD model through medical image processing software, and then used to build a physical model by Rapid Prototyping (RP) techniques for clinical applications. The size of the oral cavity images taken by CT scan is usually up to several hundreds, and it is time consuming to conduct above process, which is unfavorable to urgent cases requiring a physical model for pre-operation simulation. Therefore, this research intended to improve the image editing process to rapidly fabricate oral biological models.
The suitable threshold value, 1150HU, used to edit images of mandible and teeth in our previous research is not applicable to maxilla and maxillary sinus. Hence, different thresholds for maxilla and maxillary sinus images, starting from 500HU to 1100HU with interval of 200HU, were initially tested to suggest a proper range. Then, smaller interval of 50HU was used in this proper range to find the best one, which concluded to be 650HU to 700HU. With appropriate thresholds for various portions, skip-images strategy was utilized to reduce image editing time. CAD models with different numbers of skipped images were evaluated and found that the skipping images with image interval of 1.5mm or lower could decrease the editing time significantly and still remain the average errors within 0.3mm. Moreover, the physical RP models were able to build for clinical applications. This research has successfully improved the image editing processing, and the approaches can be utilized to fabricate oral biological models rapidly.
摘要 II
ABSTRACT III
致謝 V
圖目錄 X
表目錄 XVI
第一章 緒論 1
1.1前言 1
1.2 研究動機及目的 2
1.3 研究方法 3
1.4 論文架構 4
第二章 文獻探討 7
2.1顱顏面之構造 7
2.1.1.顏面神經 8
2.1.2上顎骨及鼻竇構造 9
2.1.3下顎骨構造 11
2.1.4牙齒結構 12
2.2放射技術 14
2.2.1立體式影像 15
2.2.2 CT影像應用於醫學工程 16
2.2.3人工植牙 19
2.3快速原型技術 27
第三章 口腔顎骨影像編輯及RP模型製作流程 35
3.1 上、下顎骨之CAD模型建立 36
3.2 顱顏顎面骨之模型製作 39
3.3 口腔生物模型影像建立 44
第四章 上顎及上顎竇閥值選取 45
4.1閥值初步選取 45
4.1.1 最佳閥值選取分析 57
4.2 上顎CAD影像建立 59
4.3上顎RP模型製作結果 60
第五章 降低影像編輯時間之探討 65
5.1測量基準 65
5.2 下顎骨影像逐張與非逐張編輯之探討 69
5.2.1 逐張編輯 69
5.2.2 非逐張編輯-隔張影像 72
5.2.3 非逐張編輯-間隔兩張影像 74
5.2.4非逐張編輯-間隔三張影像 76
5.2.5 非逐張編輯-間隔四張影像 78
5.3 下顎齒影像逐張與非逐張編輯之探討 81
5.3.1 逐張編輯 82
5.3.2 非逐張編輯-隔張影像 84
5.3.3非逐張編輯-間隔兩張影像 85
5.3.4 非逐張編輯-間隔三張影像 87
5.4 上顎齒影像逐張與非逐張編輯之探討 91
5.4.1 逐張編輯 92
5.4.2 非逐張編輯-隔張編輯 93
5.4.3 非逐張編輯-間隔兩張影像 94
5.4.4 非逐張編輯-間隔三張影像 95
5.5 上顎竇影像逐張與非逐張編輯之探討 96
5.5.1 逐張編輯 97
5.5.2 非逐張編輯-間隔一張影像 98
5.5.3 非逐張編輯-間隔兩張影像 98
5.6 非逐張編輯-間隔兩張影像RP模型製作結果 99
5.7 非逐張編輯影像應用於DENTAL CT 101
5.7.1 非逐張編輯-間隔九張影像 102
第六章 結論與未來方向 105
6.1 結論 105
6.2 未來展望 106
參考文獻 108
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