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dvdDiy扣件原住民教育困境OTA
   
   
   
     
   
 
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1
題名:DOSE CALCULATION FOR TISSUE INHOMOGENEITY IN LUNG CANCER BASED ON 6 MV PHOTON BEAMS     (16點)
肺組織不均度於6MV光子的劑量校正
著者:Anita Ai-Chu Chang(張愛珠) ;Hui-Yu Chen(陳蕙鈺) ;Hung-Chi Tai(戴宏旗) ;David Huang(黃英強) ;Yuen-Liang Lai(賴允亮) ;Yu-Jen Chen(陳裕仁)
出版地區:台灣
出版城市:台北市
學科:醫學綜合
關鍵字:不均?度 ; 二度空間放射治療計畫 ; 三度空間放射治療計畫 ; 組織空氣比法 ; 給予劑量 ; 熱發光劑量計 ; Inhomogeneity ; 2D-RT ; 3D-CRT ; Power Law Method ; Prescribe dose ; TLDs
刊名:Therapeutic Radiology and Oncology
頁碼:159-166
語言:英語
摘要: 中文摘要PDF ; 英文摘要PDF

且且: 藉由二度及三度空間放射治療計畫中組織不均句度的考量與否, 來評估肺部放射治療劑量的精確度。 材料且有濤: 本實驗以治療專用人體假體為人體肺組織參考, 全程使用固定模具包覆假體, 使其維持一致姿勢再現性,將熱發光劑量計置於腫瘤所在位置作劑量測讀並利用Va r i a n C-Series600C 6 MV 加速器照射, 所照射的劑量分別來自於二度、組織空氣比法修正後、及三度空間放射治療計畫, 腫瘤的給予劑量為1 8 0 cGy 0 益基: 實驗結果顯示, 經三度空間放射治療計畫及組織空氣比法修正後所測出的劑量較接近腫瘤的給予劑量( 17 3 cGy 與172 eGy 於5 X 5 cm2 照野, 175 cG y 與174 cG y 於10 X 10 cm2 照野) , 而二度空間放射治療計畫由於末考量組織不均句度, 因此所測出的劑量很明顯的超出腫瘤的給予劑量) 2 12 eGy 與216 cG y 分別於6 X 6 及IO X IO c m2 的照野) 。 益益: 由於肺部組織密度的多元化, 不同的計算考量方式將產生不同的照射劑量, 雖然一般情況下利用組織空氣比法修正組織不均勻度有一定效果,但此方法並末考量不均句度組織的形狀及側散射線,而三度空間放射治療計畫較三度空間放射治療計畫更能考量肺部組織密度的不均句度及整體結構,提供較精確的劑量並減少治療中的負作用。
Purpose : To evaluate the accuracy of dose calculation in lung cancer treatment planning using Two-dimensional radiotherapy (2D-RT) without inhomogeneity correction, with inhomogeneity correction by use of Power Law Tissue-Air Ratio Method (Power Law Method), and Three-dimensional conformal radiotherapy (3D-CRT) with inhomogeneity correction. The latter method takes into account in convolution algorithm. Materials and Methods : Treatment was planned based on Alderson-Rando phantom held in an immobilization device. Doses were calculated on FOCUS release 2.0 planning system both for 2D-RT and 3D-CRT, and irradiation were performed on Varian C-Series 600C linear accelerator, 6MV x-ray. Thermoluminescent dosimeters (TLDs) were placed inside the target to compare the dose based on each method. The prescribed dose was180 cGy in isocenter. Results : The delivered doses by using 3D-CRT planning and 2D with Power Law Method correction were closer to the prescribed dose (173 cGy, 172 cGy in a 5 x 5 cm2 field and 175 cGy, 174 cGy in a 10 x 10 cm2 field). The delivered dose by using 2D-RT planning without heterogeneity correction was significantly higher (212 cGy and 216 cGy). Conclusion : Dose variation between measurement and calculation is due to tissue inhomogenity, especially in the lung. Power Law Method accounts with tissue inhomogeneity but not with the 3D shape of inhomogeneity tissue. 3-D treatment planning with inhomogeneity correction based on CT image, delivers more accurate dose. Use of 3-D planning in lung cancer should reduce the risk of radiation side effects while optimizing delivery to the tumor.


    

本卷期目次
Therapeutic Radiology and Oncology
Dose Calculation for Tissue Inhomogeneity in Lung Cancer Based on 6 MV Photon Beams/ Anita Ai-Chu ChangHui-Yu ChenHung-Chi TaiDavid HuangYuen-Liang LaiYu-Jen Chen
鼻咽癌病患放射治療後生活品質之研究/ 許維中丁禮莉陳宇嘉詹淑卿鍾娜娜雷德王博民林高德
利用外加延伸式鉛屏蔽塊降低輻射照野外劑量之研究/ 李燕如蕭安成趙敏周志成林芳仁
Optimization of 3D Wedged-Pair Radiation Therapy Planning: Geometrical Alignment of Wedge Orientation/ Cheng-Ying ShiauPai-Hsuen ChenKuang-Wei HuangChung-Chi Lee
Small Cell Neuroendocrine Carcinoma of Ethmoid Sinus: Case Report and Literature Review/ Forn-Chia LinLi-Ching LinChang-Chuan SuKuei-Li LinJenny Que
Preliminary Study of an Image Archiving System With Monte Carlo Simulation/ Chang-Yu WangChong-Jong WangYu-Jie HuangKuan-Chi Chiu
放射治療之癌患對食物禁忌的調查/ 陳玉萍曾振淦湯國政洪志宏曾雁明
Gamma Knife Radiosurgery for Recurrent Nasopharyngeal Cancer/ Ling-Wei WangCheng-Ying ShiauWen-Yu ChungDavid Hung-Chi PanWan-Yuo KuoHsiu-Mei WuMien-Jung LeungKwan-Hua ChiChih-Hung HsuSheng-Yu ChenFeng-Jiau LeeKuang-Yao ChenSan-Hue Yen
Pre-operative Low Dose Radiotherapy of Rectal Cancer with Fournier's Gangrene/ Rubin Yu -Wen WangHenry Wing-Cheng LeungPei-Lun LuHow-Ran Guo
GAMMA KNIFE RADIOSURGERY FOR RECURRENT NASOPHARYNGEAL CANCER/ Ling-Wei WangCheng-Ying ShiauWen-Yu ChungDavid Hung-Chi PanWan-Yuo KuoHsiu-Mei WuMien-Jung LeungKwan-Hua ChiChih-Hung HsuSheng-Yu ChenFeng-Jiau LeeKuang-Yao ChenSan-Hue Yen
鼻咽癌病患放射治療後生活品質之研究/ 許維中丁禮莉陳宇嘉詹淑卿鍾娜娜雷德王博民林高德
放射治療之癌患對食物禁忌的調查/ 陳玉萍曾振淦湯國政洪志宏曾雁明
OPTIMIZATION OF 3D WEDGED-PAIR RADIATION THERAPY PLANNING: GEOMETRICAL ALIGNMENT OF WEDGE ORIENTATION/ Cheng-Ying ShiauPai-Hsuen ChenKuang-Wei HuangChung-Chi Lee
PRELIMINARY STUDY OF AN IMAGE ARCHIVING SYSTEM WITH MONTE CARLO SIMULATION/ Chang-Yu WangChong-Jong WangYu-Jie HuangKuan-Chi Chiu
DOSE CALCULATION FOR TISSUE INHOMOGENEITY IN LUNG CANCER BASED ON 6 MV PHOTON BEAMS/ Anita Ai-Chu ChangHui-Yu ChenHung-Chi TaiDavid HuangYuen-Liang LaiYu-Jen Chen
利用外加延伸式鉛屏蔽塊降低輻射照野外劑量之研究/ 李燕如蕭安成趙敏周志成林芳仁
SMALL CELL NEUROENDOCRINE CARCINOMA OF ETHMOID SINUS: CASE REPORT AND LITERATURE REVIEW/ Forn-Chia LinLi-Ching LinChang-Chuan SuKuei-Li LinJenny Que
PRE-OPERATIVE LOW DOSE RADIOTHERAPY OF RECTAL CANCER WITH FOURNIER'S GANGRENE: A CASE REPORT AND REVIEW OF LITERATURE/ Yu-Wen Rubin WangWing-Cheng Henry LeungPei-Lun LuHow-Ran Guo
 
   
 
   

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