[The calculation of the dose from a 60Co source using 3-dimensional Fourier transform].
The distribution of a dose in tissue-equivalent phantoms was calculated through convolution of scattered photon flux by using three-dimensional Fourier transform. A simplified model of a scattering kernel is presented, wherein multiple scattering radiation is taken into account by a water point source accumulation factor. A 64 x 64 x 64 grid calculation lasts about 2 sec on a routine personal computer (three-dimensional Fourier transform and convolution). The dose were calculated in the cube, 32 x 32 x 32 cm in size and in the cylinder, 12 cm in diameter for 4 x 4-to-20 x 20-cm radiation fields. The results are in good agreement with the reference data and Monte Carlo simulation results.
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D003037:Cobalt Radioisotopes / Q000627:therapeutic use*; D005583:Fourier Analysis; D006801:Humans; D008954:Models, Biological; D009010:Monte Carlo Method; D019047:Phantoms, Imaging / Q000706:statistics & numerical data; D011829:Radiation Dosage; D011867:Radioisotope Teletherapy / Q000706:statistics & numerical data*; D012984:Software
D003037:Cobalt Radioisotopes