| アイテムタイプ |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2025-04-22 |
| タイトル |
|
|
タイトル |
Uncertainty evaluation in simulation study on range-shift estimation due to statistical noise in secondary electron bremsstrahlung from a small number of carbon ions |
|
言語 |
en |
| 言語 |
|
|
言語 |
eng |
| 資源タイプ |
|
|
資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
|
資源タイプ |
journal article |
| 著者 |
Tsuda Michiko
Yamaguchi Mitsutaka
Yabe Takuya
Nagao Yuuto
Kawachi Naoki
Sakai Makoto
Kamiya Tomihiro
Kada Wataru (Tohoku Univ.)
Watabe Hiroshi
|
| 抄録 |
|
|
内容記述タイプ |
Abstract |
|
内容記述 |
Secondary electron bremsstrahlung (SEB) has been proposed for range verification in particle therapy. However, the uncertainty in range-shift estimation due to high statistical noise under small numbers of carbon ion irradiation remains unclear. This simulation study evaluated the uncertainty of SEB-based range-shift estimations under conditions with limited numbers of carbon ions. The SEB images were generated by irradiating an acrylic target with monoenergetic carbon-ion beams and calculating the energy deposited onto a cadmium telluride pixel detector in simulation. Estimated range shifts were derived from the obtained SEB images using our proposed range-shift estimation method. As a result, the uncertainty was 1.4 mm for 10^8 ions and 4.4 mm for 10^7 ions. The results suggested that improving the sensitivity of the detector is effective in reducing the uncertainty. |
| 書誌情報 |
Japanese Journal of Applied Physics
巻 64,
号 4,
p. 047001-1-047001-7,
発行日 2025-04
|
| 出版者 |
|
|
出版者 |
IOP Publishing |
| DOI |
|
|
|
識別子タイプ |
DOI |
|
|
関連識別子 |
10.35848/1347-4065/adc21b |
