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dvd左傳拓撲學軍訓教官
   
   
   
     
   
 
項次 書目
1
題名:動態準直儀葉片於虛擬楔形濾板之研究     (24點)
THE STUDY OF VIRTUAL WEDGE BY USING DYNAMIC MULTI-LEAF COLLIMATOR
著者:邱仲峰(Jeng-Fong Chiou) ;黃光偉(Kuang-Wei Huang) ;李俊信(Jason Lee) ;?上惠(Sang-Hue Yen) ;蕭正英(Cheng-Ying Shiau) ;陳培勳(Pai-Hsuen Chen) ;蔡若婷(Jo-Ting Tsai) ;李玉麟(Yuh-Lin Lee) ;陳良光(Liang-Kuang Chen)
出版地區:台灣
出版城市:台北市
學科:醫學綜合
關鍵字:準直儀葉片 ; 楔形濾板 ; Multileaf ; Wedge
刊名:放射治療與腫瘤學
頁碼:215-226
語言:繁體中文
摘要: 中文摘要PDF ; 英文摘要PDF

放射線治療劑量的均勻影響癌症患者的腫瘤控制率和正常組織副作用發生率,所以治療計劃的擬定是以高劑量區均勻分布於治療靶區且周圍正常組織的劑量愈低為努力的目標。但由於人體各部位組織及輪廓的差異性往往造成劑量的不均勻分布。在傳統的治療方式是藉由實體的楔形濾板以補償劑量的不均勻。然而實體的楔形濾板有楔形角度、照野大小的限制並僅有一維的補償效果。本論文研究的目的即在發展出一個二維的動態楔形濾板,且角度與照野更較傳統濾板寬廣,以利放射治療需要,使患者可以接受到更均勻的劑量。 藉由計算的楔形劑量圖譜轉換成治療計劃機的通量圖譜產生葉片移動的執行檔,本論文利用動態準直儀的葉片移動形成一非實體的動態楔形濾板,並以假體驗證其劑量曲線與絕對劑量的準確性。結果証實在X 軸向45° 、15° 、38°Y 軸向20° 、30° 的動態楔形濾板劑量曲線的最大誤差分別是1.8% 、1.7% 、-1.8% 、-2.6% 、-2.3% 。同時具X 軸向45°Y 軸向15° 的二維動態楔形濾板,其二維的等劑量曲線誤差也小於2% 及2 mm 。絕對劑量驗證在各角度的動態楔形濾板給予劑量誤差也都不大於3% 。 動態楔形濾板可以配合現行的CadPlan 電腦治療計劃機進行劑量曲線模擬,為患者提供一更好且準確放射治療計劃。
Dose uniformity is directly related to tumor control probability (TCP) and normal tissue complication probability (NTCP). An ideal situation is one in which a uniform high dose is focused on the tumor target region and normal tissue surrounding the target volume receives minimal radiation. Dose distribution and uniformity must take into account the irregular contours and density changes within the body, especially the head, neck, and breast. A physical wedge has been used to compensate for irregular contours during traditional treatment, but a physical wedge is limited by its fixed angle and size. In addition, it cannot compensate for two dimensions simultaneously. We have developed a two-dimensional dynamic wedge to overcome these limitations. A wedge-shaped dose map was calculated for this study. The dose map was transferred to a fluence map in a CadPlan treatment planning program to generate a multileaf motion file. We created 6 dynamic wedges and verified them by phantom measurements. The maximum differences in the beam profiles between the calculated values and the measured values were 1.8%, 1.7%, and -1.8% when measured for wedges at 45 degrees, 15 degrees, and 38 degrees in the X direction, and -2.6% and -2.3% when measured for wedges at 20 and 30 degrees in the Y direction.The differences between the isodose curves for the two-dimensional dynamic wedges were less than 2% and 2mm. Absolute doses also showed good agreement between calculated and measured values in this study such that all differences were less than 3%. The two-dimensional dynamic wedge developed in this study may be valuable for simulating isodose curves and can be used for CadPlan treatment planning which is currently used in many hospitals.


    

本卷期目次
放射治療與腫瘤學
Radiotherapy in the Management of Localized Classic Kaposi's Sarcoma/ Yao-Ching WangLai-Lei TingChun-Ru ChienSung-Hsin KuoKuo-Ming HuangChao-Yuan HuangMing-Kuen LaiChia-Hsien Cheng
強度調控式放射治療之劑量驗證/ 梁基安蕭安成蘇經雄施文彬潘佳穎
Long-Term Survival with No Evidence of Brain Metastasis in 6 Patients of Limited-Stage Small Cell Lung Cancer Receiving Prophylactic Cranial Irradiation/ Chia-Chun HuangMu-Tai LiuChu-Ping PiTung-Hao ChangWen-Shan LiuChao-Yuan Huang
Treatment Results and Prognostic Factors of Esthesioneuroblastoma (ENB)/ Yu-Ming WangChong-Jong WangEng-Yen HuangHui-Chun ChenLi-Min SunFu-Min FangHsuan-Chih HsuChing-Yeh HsiungYu-Jie HuangChang-Yu Wang
動態準直儀葉片於虛擬楔形濾板之研究/ 邱仲峰黃光偉李俊信顏上惠蕭正英陳培勳蔡若婷李玉麟陳良光
第一期下期與第二期上期之子宮頸癌經不同治療模式後的長期生活品質比較/ 許維中詹淑卿鍾娜娜陳宇嘉丁禮莉陳斯榮蔡崇煌王博民謝保群林高德
Brain Stem Doses for Patients of T3/T4 Nasopharyngeal Carcinoma Treated by Bid Irradiation and Concomitant Chemotherapy/ Stella Y. C. TsaiSkye Hongiun ChengJames Jer-Min JianChao-Ming HuangK. Lawrence YenKwan-Yee ChanSzu-Yun LeuYen-Chun LinNei-Min ChuTran-Der TanCheng-Yee HsiehMei-Hua TsouChing-Yuan LinAndrew T. Huang
Metastatic Cardiac Tumor from Primary Tongue Cancer: A Case Report/ Tzu-Hwei WangWen-Shan Liu
鈷-60輻射污染鋼筋建物居民輻射風險因子之研究/ 蔡顯智許世明張國華陳為立
BRAIN STEM DOSES FOR PATIENTS OF T3/T4 NASOPHARYNGEAL CARCINOMA TREATED BY BID IRRADIATION AND CONCOMITANT CHEMOTHERAPY/ Stella Y. C. TsaiSkye Hon-Giun ChengJames Jer-Min JianChao-Ming HuangK. Lawrence YenKwan-Yee ChanSzu-Yun LeuYen-Chun LinNei-Min ChuTran-Der TanCheng-Yee HsiehMei-Hua TsouChing-Yuan LinAndrew T. Huang
第一期下期與第二期上期之子宮頸癌經不同治療模式後的長期生活品質比較/ 許維中詹淑卿鍾娜娜陳宇嘉丁禮莉陳斯榮蔡崇煌王博民謝保群林高德
TREATMENT RESULTS AND PROGNOSTIC FACTORS OF ESTHESIONEUROBLASTOMA (ENB)/ Yu-Ming WangChong-Jong WangEng-Yen HuangHui-Chun ChenLi-Min SunFu-Min FangHsuan-Chih HsuChing-Yeh HsiungYu-Jie HuangChang-Yu Wang
RADIOTHERAPY IN THE MANAGEMENT OF LOCALIZED CLASSIC KAPOSI'S SARCOMA/ Yao-Ching WangLai-Lei TingChun-Ru ChienSung-Hsin KuoKuo-Ming HuangChao-Yuan HuangMing-Kuen LaiChia-Hsien Cheng
LONG-TERM SURVIVAL WITH NO EVIDENCE OF BRAIN METASTASIS IN 6 PATIENTS OF LIMITED-STAGE SMALL CELL LUNG CANCER RECEIVING PROPHYLACTIC CRANIAL IRRADIATION/ Chia-Chun HuangMu-Tai LiuChu-Ping PiTung-Hao ChangWen-Shan LiuChao-Yuan Huang
動態準直儀葉片於虛擬楔形濾板之研究/ 邱仲峰黃光偉李俊信?上惠蕭正英陳培勳蔡若婷李玉麟陳良光
強度調控式放射治療之劑量驗證/ 梁基安蕭安成蘇經雄施文彬潘佳穎
鈷-60輻射污染鋼筋建物居民輻射風險因子之研究/ 蔡顯智許世明張國華陳?立
METASTATIC CARDIAC TUMOR FROM PRIMARY TONGUE CANCER: A CASE REPORT/ Tzu-Hwei WangWen-Shan Liu
 
   
 
   

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