| Item type |
文献 / Documents(1) |
| 公開日 |
2021-08-18 |
| アクセス権 |
|
|
アクセス権 |
open access |
| 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 |
| 出版社版DOI |
|
|
|
識別子タイプ |
DOI |
|
|
関連識別子 |
https://doi.org/10.1002/acm2.13042 |
|
|
言語 |
ja |
|
|
関連名称 |
10.1002/acm2.13042 |
| 出版タイプ |
|
|
出版タイプ |
VoR |
|
出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| タイトル |
|
|
タイトル |
Evaluation of calibration factor of OSLD toward eye lens exposure dose measurement of medical staff during IVR |
|
言語 |
en |
| 著者 |
アサハラ, タカシ
林, 裕晃
ゴトウ, ソウタ
キモト, ナツミ
タケガミ, カズキ
マエダ, タツヤ
金澤, 裕樹
オカザキ, トオル
ハシヅメ, タクヤ
|
| 抄録 |
|
|
内容記述タイプ |
Abstract |
|
内容記述 |
The eye lens is a sensitive organ of which an x‐ray exposure dose should be managed during interventional radiology (IVR). In the actual situations, the eye lens is exposed to scattered x‐rays; they have different from the standard x‐ray energies which are used for general dose calibration of the dosimeter. To perform precise dose measurement, the energy dependence of the dosimeter should be properly accounted for when calibrating the dosimeter. The vendor supplies a calibration factor using 80‐kV diagnostic x‐rays under a free‐air condition. However, whether it is possible to use this calibration factor to evaluate the air kerma during the evaluation of the eye lens dose is unclear. In this paper, we aim to precisely determine calibration factors, and also examine the possible application of using a vendor‐supplied calibration factor. First, the x‐ray spectrum at the eye lens position during fluoroscopy was measured with a CdTe x‐ray spectrometer. We mimicked transfemoral cardiac catheterization using a human‐type phantom. Second, we evaluated the doses and calibration factors at three dosimetric points: front and back of protective goggles, and the front of the head (eye lens position). We used the measured x‐ray spectrum to determine the incident photon distribution in the eye lens regions, and x‐ray spectra corresponding to the dosimetric points around the eye lens were estimated using Monte Carlo simulation. Although the calibration factors varied with dosimetric positions, we found that the factors obtained were similar to the vendor‐supplied calibration factor. Furthermore, based on the experiment, we propose a practical way to calibrate an OSL dosimeter in an actual clinical situation. A person evaluating doses can use a vendor‐supplied calibration factor without any corrections for energy dependences, only when they add a systematic uncertainty of 5%. This evidence will strongly support actual exposure dose measurement during a clinical study. |
|
言語 |
en |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
calibration factor |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
eye lens dose |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
IVR |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
OSL dosimeter |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
scattered x-ray |
| 書誌情報 |
en : Journal of Applied Clinical Medical Physics
巻 21,
号 11,
p. 263-271,
発行日 2020-10-14
|
| 収録物ID |
|
|
収録物識別子タイプ |
ISSN |
|
収録物識別子 |
15269914 |
| 収録物ID |
|
|
収録物識別子タイプ |
NCID |
|
収録物識別子 |
AA12034060 |
| 出版者 |
|
|
出版者 |
Wiley Periodicals |
|
言語 |
en |
| 出版者 |
|
|
出版者 |
American Association of Physicists in Medicine |
|
言語 |
en |
| 権利情報 |
|
|
言語 |
en |
|
権利情報 |
This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
| EID |
|
|
識別子 |
368666 |
|
識別子タイプ |
URI |
| 言語 |
|
|
言語 |
eng |
acm_21_11_263.pdf (1.68 MB)
.png)
