Sains Malaysiana 25(1): 45-50 (1996)                                                           Sains Fizis dan Gunaan/

Physical and Applied Sciences

Calculation of Mean Kidney Dose for a

Co-57 External Radiation Source

Supian Bin Samat

Jabatan Fizik

Universiti Kebangsaan Malaysia

43600 UKM Bangi, Selangor D.E. Malaysia

ABSTRACT

A description is given of the numerical integration method for the calculation of the mean kidney dose for a Co-57 external radiation source. Based on this theory, a computer program was written. Initial calculation of the kidney volume shows that the method has a good accuracy. For the mean kidney dose, this method gives a satisfactory result, since the calculated value lies within the acceptable range of the central axis depth dose.

ABSTRAK

Satu huraian diberikan tentang kaedah pengkamiran berangka untuk mengira dos buah pinggang purata untuk satu sumber sinaran luar Co-57. Berdasarkan teori ini, satu program komputer ditulis. Pengiraan awal isipadu buah pinggang menunjukkan yang kaedah ini mempunyai ketepatan yang baik. Untuk dos buah pinggang purata, kaedah ini memberikan keputusan yang baik, kerana nilai kiraan terletak diantara julat dos kedalaman paksi pusat yang diterima.

REFERENCES

Chapra, S.C. & Canale, R.P. 1989. Numerical Methods for Engineers, 2nd Edition, New York: McGraw-Hill Book Co.

Mould, R.F. 1981. Radiotherapy Treatment Planning, Medical Physics Handbook 7. Bristol: Adam Hilger Ltd.

Press, W.H., Flannery, B.P., Tenkolsky, S.A. & Vetterling, W.T. 1991. Numerical Recipes in C - The art of Scientific Computing. Cambridge: Cambridge University Press.

Supian bin Samat. 1985. Unpublished report, a copy of the program is available from the authors upon request.

WHO. 1977. Use of ionising radiation and radionuclide on human brain, for medical research, training and non medical purposes. World Health Organisation Tech­nical report Series 611, Geneva.