書誌事項
- タイトル別名
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- Practical calculation method of diagnostic X-ray spectrum using EGS5 code
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Using a Monte-Carlo simulation code, a practical method to calculate the X-ray spectrum in the radiography was proposed. The geometry used in the simulation was composed of the target and total filtration. This geometry could calculate both the generation of the X-rays at the target and its attenuation in the total filtration. The features of this method are to simulate the heal effect and to obtain the X-ray spectrum corresponding to the all irradiated field. Because it was difficult to reproduce the electric field in the simulation, almost all incident electrons were scattered at the target and some of them were converted to the bremsstrahlung X-rays in the total filtration. This phenomenon did not occur in the real X-ray equipment. Therefore, we considered that our method was appropriate to use a case in which the bremsstrahlung X-rays generated in the total filtration was negligibly-small compared with the X-ray spectrum generated at the target. We investigated the possibility to apply the method for the tube voltage of 40-120 kV. As a result, we found that a fraction of inessential bremsstrahlung X-rays was at most 0.4%. Namely, using the proposed method, the X-ray spectrum can be reproduced with accuracy of 0.4%.
収録刊行物
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- 医用画像情報学会雑誌
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医用画像情報学会雑誌 29 (3), 62-67, 2012
医用画像情報学会
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詳細情報 詳細情報について
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- CRID
- 1390282679630677248
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- NII論文ID
- 130002069279
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- ISSN
- 18804977
- 09101543
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可