STUDY OF THE UNEQUAL SPHERES PACKING PROBLEM - AN APPLICATION TO RADIOSURGERY TREATMENT

ASIA unversity > 資訊學院 > 行動商務與多媒體應用學系 > 會議論文 > Item 310904400/5144

請使用永久網址來引用或連結此文件: http://asiair.asia.edu.tw/ir/handle/310904400/5144

題名:	STUDY OF THE UNEQUAL SPHERES PACKING PROBLEM - AN APPLICATION TO RADIOSURGERY TREATMENT
作者:	Ka-Lok Ng
貢獻者:	Department of Information Management Ling Tung College, Tai-chung, Nantun, Taiwan
日期:	2003-09-13
上傳時間:	2009-12-09 05:24:57 (UTC+0)
出版者:	臺中健康暨管理學院
摘要:	We employ the Monte Carlo method to study a constrained optimization problem - packing hard spheres with unequal radii (r2>r1) into a 3-D bounded region, and its connection with the Gamma Knife radiosurgery treatment planning. Selection of the best fit solution is based on using the Boltzmann factor, e-DE/T, which allows us to search for the global optimal solution. As an illustration we determined the least number (≦15) of packed spheres that will occupy the largest volume for three different hypothetical tumor sizes (4115, 10000 and 36000 voxels). For the bounded regions and the sizes of the packed spheres that we studied here, the optimal volume packing ratio ranges from 41.3 to 48.7%. From our study, using a lower r2/r1 ratio is more desirable due to the ≦15 radiation shots constraint. The optimal volume packing ratio can be obtained within a relative short CPU computing time and could provide a good starting point for the radiosurgery treatment planning.
關聯:	第六屆工程科技與中西醫學應用研討會 62-65
顯示於類別:	[行動商務與多媒體應用學系] 會議論文

文件中的檔案:

檔案	描述	大小	格式	瀏覽次數
310904400-5144.doc		37Kb	Microsoft Word	372	檢視/開啟

在ASIAIR中所有的資料項目都受到原著作權保護.