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Student Number 88323108
Author Ming-Yi Kao(高銘儀)
Author's Email Address No Public.
Statistics This thesis had been viewed 2340 times. Download 2313 times.
Department Mechanical Engineering
Year 2002
Semester 2
Degree Master
Type of Document Master's Thesis
Language zh-TW.Big5 Chinese
Title 應用3D區域成長法於腦部磁共振影像之分割
Date of Defense 2003-07-03
Page Count 50
Keyword
  • 3D區域成長法
  • 影像分割
  • 磁共振影像
  • 腦部
  • Abstract  結構式磁共振醫學影像是一種空間解析度高的影像,對軟組織如腦組織的灰值、白值及腦脊髓液具有良好的影像對比,可以利用腦組織的灰值、白值、腦脊髓液的影像亮度特徵不同,分割出腦部組織的區域。
     本研究是以數位式醫學影像的T1WI磁共振影像為處理、研究的影像,以區域成長法自動將單一頻譜的磁共振影像的腦組織與非腦組織分離開來。主要分割腦部區域的內容為兩部分,一為區域成長法的前處理,以圈選腦部組織經區域成長法與膨脹處理得到概略的腦部區域,求影像腦組織的亮度平均值與亮度分佈範圍作為金字塔區域成長法的成長參數,一為金字塔式區域成長法在層層降低解析度後,再以區域成長法求出的腦部區域作為逐層恢復解析度區域成長法的成長限制區域方式自動求得腦部組織。而分割出的影像可以體積顯示法(Volume Rendering)顯示三維的腦組織影像,對醫生診斷、手術前路徑規劃、腦科學研究皆有很大的幫助。
    Table of Content 目錄
    摘要                 I
    目錄                 II
    圖索引                 IV
    表索引                 VI
    第一章 緒論             1
    1.1 研究動機             1
    1.2 文獻回顧             1
    1.3 研究方法             4
    1.4 論文介紹             4
    第二章 影像簡介             6
    2.1 數位醫學影像             6
     2.1.1 DICOM的格式概敘         7
     2.1.2 DICOM的資料元素格式介紹    8
     2.1.3 影像的擷取            10
    2.2 磁共震影像簡介        12
     2.2.1 磁共振            12
     2.2.2 磁共振影像            13
     2.2.3 磁共振影像討論        18
    第三章 3D區域成長法        19
    3.1 3D區域成長法流程        19
    3.2 圈選腦部區域            21
    3.3 概略的腦部區域            22
    3.4 腦組織的亮度平均值及分佈範圍   24
    3.5 金字塔式區域成長法        24
     3.5.1 降低解析度            24
     3.5.2 區域成長法            26
     3.5.3 恢復解析度            27
     3.5.4 區域成長的成長法則        29
    第四章 實驗與結果討論        31
    4.1 影像分析            31
    4.2 金字塔式區域成長法之前處理   32
    4.3 金字塔式區域成長法結果之討論   34
    4.4 自動找成長參數失敗的討論   42
    第五章 結論與未來展望        45
    參考文獻                 47
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    Advisor
  • Ching-Shiow Teseng(曾清秀)
  • Files
  • 88323108.pdf
  • approve immediately
    Date of Submission 2003-07-16

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