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Iranian Journal of Fuzzy Systems، جلد ۸، شماره ۴، صفحات ۹۳-۱۰۵
عنوان فارسی FLUENCE MAP OPTIMIZATION IN INTENSITY MODULATED RADIATION THERAPY FOR FUZZY TARGET DOSE
چکیده فارسی مقاله Although many methods exist for intensity modulated radiotherapy (IMRT) fluence map optimization for crisp data, based on clinical practice, some of the involved parameters are fuzzy. In this paper, the best fluence maps for an IMRT procedure were identifed as a solution of an optimization problem with a quadratic objective function, where the prescribed target dose vector was fuzzy. First, a defuzzying
procedure was introduced to change the fuzzy model of the problem into an equivalent non-fuzzy one. Since the solution set was nonconvex, the optimal solution was then obtained by performing a projection operation in applying the gradient method. Numerical simulations for two typical clinical cases (for prostate and head-and-neck cancers, each for two patients) are given.
کلیدواژه‌های فارسی مقاله IMRT، Singed distance، Triangular fuzzy number، Gradient method،
عنوان انگلیسی FLUENCE MAP OPTIMIZATION IN INTENSITY MODULATED RADIATION THERAPY FOR FUZZY TARGET DOSE
چکیده انگلیسی مقاله Although many methods exist for intensity modulated radiotherapy (IMRT) fluence map optimization for crisp data, based on clinical practice, some of the involved parameters are fuzzy. In this paper, the best fluence maps for an IMRT procedure were identifed as a solution of an optimization problem with a quadratic objective function, where the prescribed target dose vector was fuzzy. First, a defuzzying
procedure was introduced to change the fuzzy model of the problem into an equivalent non-fuzzy one. Since the solution set was nonconvex, the optimal solution was then obtained by performing a projection operation in applying the gradient method. Numerical simulations for two typical clinical cases (for prostate and head-and-neck cancers, each for two patients) are given.
کلیدواژه‌های انگلیسی مقاله IMRT, Singed distance, Triangular fuzzy number, Gradient method
نویسندگان مقاله Alireza Fakharzadeh Jahromi |
Shiraz University of Technology, Shiraz, Fars, Iran

Omolbanin Bozorg |
Shiraz University of Technology, Shiraz, Fars, Iran

Hamidreza Maleki |
Shiraz University of Technology, Shiraz, Fars, Iran

Mohamad Amin Mosleh-Shirazi |
Shiraz University of Medical Sciences, Shiraz, Fars,

نشانی اینترنتی http://ijfs.usb.ac.ir/article_310_624d131dd630762401d6a0a4997854fa.pdf
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