An application of quasirandom number method for speed-up of three dimensional heterogeneous dose distribution calculation by modified equivalent-TAR

An application of equivalent TAR method by Cunningham and Sontag for making absorbed dose calculation in a heterogeneous medium had been developed by authors. This paper proposes method of shortening calculation time maintaining precision of calculation. Employment of quasirandom number brought us fast calculation compared with that by Monte-Carlo method. Further, new method of three dimensional heterogeneous compensation together with irregular field shape calculation is proposed and performed taking advantage of concept of quasirandom number. (author)