Proceedings of the Korean Society of Medical Physics Conference (한국의학물리학회:학술대회논문집)
- 2002.09a
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- Pages.263-266
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- 2002
A Practical Method for Estimating High-Energy X-Ray Spectra Using the Iterative Perturbation Principle of Waggener
- Iwasaki, Akira (School of Health Sciences, Hirosaki University) ;
- Matsutani, Hideya (Dept. of Radiology, School of Medicine, Hirosaki University) ;
- Kubota, Mamoru (School of Health Sciences, Hirosaki University) ;
- Fujimori, Akira (Dept. of Radiology, Hirosaki University Hospital) ;
- Suzaki, Katsumasa (Dept. of Radiology, Hirosaki University Hospital) ;
- Abe, Yoshinao (Dept. of Radiology, School of Medicine, Hirosaki University)
- Published : 2002.09.01
Abstract
We have developed a practical method for estimating high-energy x-ray spectra using measured attenuation curves. This method is based on the iterative perturbation technique proposed by Waggener et al. The principle is to minimize the difference between the measured and calculated transmission curves. The experimental study was made using 4 MV, 10 MV, and 15 MV x-ray beams. It has been found that the spectrum varies strongly with the off-axis distance.
Keywords
- High-energy x-ray spectra;
- iterative perturbation technique;
- transmission analysis;
- attenuation measurement