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    Please use this identifier to cite or link to this item: http://ccur.lib.ccu.edu.tw/handle/A095B0000Q/266


    Title: 快速影像處理技術應用放射治療之呼吸調控;Fast Image Processing Applied to Respiratory Gated Radiotherapy
    Authors: 何博均;He, BO-JUNE
    Contributors: 機械工程系研究所
    Keywords: 呼吸調控;適應性的區域成長法;Marching Square;虛擬X-ray;角點偵測;Marching Cubes;Respiratory gated;Adaptive region growing;Marching Square;Visual X-ray;Corner detection;Marching Cubes
    Date: 2017
    Issue Date: 2019-07-17
    Publisher: 機械工程系研究所
    Abstract: 本論文的目的是開發一套利用快速影像處理技術應用於放射治療之呼吸調控系統,解決傳統放射治療只能透過外部資訊來預測腫瘤位置的不確定性。並且取得醫師的治療規劃檔案與重建的三維模型製作出放射治療模擬流程。透過此模擬流程可進行教育訓練和讓病患更加了解治療流程。本論文利用Marching Square演算法快速將萃取出橫膈膜輪廓,利用不同時間的橫膈膜輪廓製作成欲照射的範圍區間,再透過FAST角點偵測方法來判斷於虛擬X-ray影像上即時萃取出的橫膈膜是否進入照射範圍,經由以上方法進行即時的呼吸追蹤。4D CT影像上先用適應性區域成長法萃取出的腫瘤影像,透過Marching Cubes重建成三維模型,進一步加上骨頭、皮膚等模型,然後搭配上醫師的治療規劃檔案模擬出放射治療流程。
    In this research, we develop respiratory gated radiotherapy system by fast image processing for solving the tumor position uncertainty that is caused by external information. This system simulates the radiotherapy based on the DICOM-RT information and 3D model. In this study, through the Marching Square algorithm, the user can extract diaphragm contour at the instant, and generate the radioactive range by the different time of diaphragm contour in our system. Finally, using FAST algorithm allows us to determine whether the diaphragm contour extracted from the visual X-ray image is in the radioactive range. We can use the Marching Cubes algorithm to reconstruct the 3D model of tumor extracted by adaptive region growing from the 4D CT images. More information such as the bone, the skin model and DICOM-RT can be information provided by the doctor for simulating the complete radiotherapy.
    Appears in Collections:[機械工程學系] 學位論文

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