X-ray dose computations in heterogeneous media using 3-dimensional FFT convolution
X-ray dose computations in heterogeneous media using 3-dimensional FFT convolution
复制标题
使用 3 维 FFT 卷积计算异质介质中的 X 射线剂量
DOI:
10.1088/0031-9155/35/3/005
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发表时间:
1990
影响因子:
3.5
通讯作者:
A. Boyer
中科院分区:
文献类型:
--
作者:
Yunping Zhu;A. Boyer
Dose distributions of nominal 6 and 18 MV X-ray beams and cobalt-60 photon beams were modelled in three dimensions in heterogeneous phantoms using convolutions that employ the fast Fourier transform. Doses were computed at 65536 calculation points (i.e. a 64*64*16 matrix) for five spectral components. Primary fluence was calculated by ray-tracing through the inhomogeneous medium. Dose was obtained by convolution with the primary fluence. The primary dose component, mediated by electrons, was calculated separately from the scatter component, mediated by scattered X-rays. The calculation time was approximately 3 minutes per spectral component on a Digital Equipment Corporation VAXstation 3500. Comparisons of FFT convolution calculations with measurements showed that an FFT convolution algorithm can predict most of the characteristics of an X-ray beam passing through a heterogeneous phantom.
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影响因子:
3.8
作者:
Rice,RK;Hansen,JL;Chin,LM;Mijnheer,BJ;Bjärngard,BE
通讯作者:
Bjärngard,BE
影响因子:
3.8
作者:
Barry L. Werner;Indra J. Das;Faiz M. Khan;A. Meigooni
通讯作者:
Barry L. Werner;Indra J. Das;Faiz M. Khan;A. Meigooni
影响因子:
3.8
作者:
SIDDON, RL
通讯作者:
SIDDON, RL
DOI:
10.1016/s0360-3016(98)90022-0
发表时间:
1988-08-01
影响因子:
7
作者:
RICE, RK;MIJNHEER, BJ;CHIN, LM
通讯作者:
CHIN, LM
影响因子:
3.8
作者:
Boyer,AL;Wackwitz,R;Mok,EC
通讯作者:
Mok,EC