Computation of dose distributions for radioactive seed implants.

An interactive treatment planning program for the computation of dose distributions for 125I and 192Ir seed implants of up to 300 sources is described. The seed coordinates are entered using either the keyboard or a sonic digitizer from either orthogonal or stereo films. The program produces a dose matrix which can be displayed and plotted directly or combined with the putput of other treatment planning programs to provide composite plans for treatments using multiple modalities. Seeds of different activities can be combined within a single plan. The program uses two-letter mnemonics for specifying the available options, among which are commands for choosing standard antero-posterior, lateral, and transverse plans.

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