Title :
IMRT with Fuzzy Prescribed Target Dose Vector
Author :
Fakharzadeh, A.J. ; Maleki, H.R. ; Bozorg, O.
Author_Institution :
Dept. of Math., Shiraz Univ. of Technol., Shiraz, Iran
Abstract :
Based on the clinical witnesses, in the IMRT some of the parameter are fuzzy. In the paper, the best treatment was shown as a solution of an optimization problem with quadratic objective function, where the prescribed target dose vector is fuzzy. Then the defuzzying procedure was done and since the solution set was non-convex, the optimal solution was obtained by relaxation method. Two clinical numerical example was given.
Keywords :
dosimetry; fuzzy set theory; optimisation; radiation therapy; IMRT; defuzzying procedure; fuzzy prescribed target dose vector; optimization; quadratic objective function; relaxation method; Apertures; Cancer; Fuzzy systems; Heart; Linear programming; Lungs; Neoplasms; Relaxation methods; Signal processing; X-rays; IMRT; SDG method; defuzzy; fuzzy prescribed dose; optimization;
Conference_Titel :
2009 International Conference on Signal Processing Systems
Conference_Location :
Singapore
Print_ISBN :
978-0-7695-3654-5
DOI :
10.1109/ICSPS.2009.175
