| Item type |
文献 / Documents(1) |
| 公開日 |
2017-09-14 |
| 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/10.1007/s12194-016-0366-1 |
| 出版タイプ |
|
|
出版タイプ |
AM |
|
出版タイプResource |
http://purl.org/coar/version/c_ab4af688f83e57aa |
| タイトル |
|
|
タイトル |
Entrance surface dose measurements using a small OSL dosimeter with a computed tomography scanner having 320 rows of detectors |
|
言語 |
en |
| 著者 |
タケガミ, カズキ
林, 裕晃
ヤマダ, ケンジ
ミハラ, ヨシキ
キモト, ナツミ
金澤, 裕樹
東野, 恒作
山下, 一太
林, 二三男
オカザキ, トオル
ハシズメ, タクヤ
コバヤシ, イクオ
|
| 抄録 |
|
|
内容記述タイプ |
Abstract |
|
内容記述 |
Entrance surface dose (ESD) measurements are important in X-ray computed tomography (CT) for examination, but in clinical settings it is difficult to measure ESDs because of a lack of suitable dosimeters. We focus on the capability of a small optically stimulated luminescence (OSL) dosimeter. The aim of this study is to propose a practical method for using an OSL dosimeter to measure the ESD when performing a CT examination. The small OSL dosimeter has an outer width of 10 mm; it is assumed that a partial dose may be measured because the slice thickness and helical pitch can be set to various values. To verify our method, we used a CT scanner having 320 rows of detectors and checked the consistencies of the ESDs measured using OSL dosimeters by comparing them with those measured using Gafchromic™ films. The films were calibrated using an ionization chamber on the basis of half-value layer estimation. On the other hand, the OSL dosimeter was appropriately calibrated using a practical calibration curve previously proposed by our group. The ESDs measured using the OSL dosimeters were in good agreement with the reference ESDs from the Gafchromic™ films. Using these data, we also estimated the uncertainty of ESDs measured with small OSL dosimeters. We concluded that a small OSL dosimeter can be considered suitable for measuring the ESD with an uncertainty of 30 % during CT examinations in which pitch factors below 1.000 are applied. |
|
言語 |
en |
| 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 |
Gafchromic™ film |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Entrance surface dose |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Computed tomography |
| 書誌情報 |
en : Radiological Physics and Technology
巻 10,
号 1,
p. 49-59,
発行日 2016-06-24
|
| 収録物ID |
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|
収録物識別子タイプ |
ISSN |
|
収録物識別子 |
18650333 |
| 収録物ID |
|
|
収録物識別子タイプ |
ISSN |
|
収録物識別子 |
18650341 |
| 収録物ID |
|
|
収録物識別子タイプ |
NCID |
|
収録物識別子 |
AA12236881 |
| 出版者 |
|
|
出版者 |
Springer Japan |
|
言語 |
en |
| 備考 |
|
|
言語 |
ja |
|
値 |
The final publication is available at Springer via http://dx.doi.org/10.1007/s12194-016-0366-1. |
| 権利情報 |
|
|
言語 |
en |
|
権利情報 |
Copyright © Japanese Society of Radiological Technology and Japan Society of Medical Physics 2016 |
| EID |
|
|
識別子 |
313222 |
|
識別子タイプ |
URI |
| 言語 |
|
|
言語 |
eng |
rpt_10_1_49.pdf (1.3 MB)
