| Item type |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2011-07-13 |
| タイトル |
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タイトル |
Effects of dual-energy subtraction chest radiography on detection of small pulmonary nodules with varying attenuation: receiver operating characteristic analysis using a phantom study |
|
言語 |
en |
| 言語 |
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言語 |
eng |
| キーワード |
|
|
主題 |
dual-energy subtraction, flat-panel detector, chest radiography, ROC analysis, phantom |
| 資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
journal article |
| アクセス権 |
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アクセス権 |
open access |
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アクセス権URI |
http://purl.org/coar/access_right/c_abf2 |
| 著者 |
尾田, 済太郎
粟井, 和夫
船間, 芳憲
宇都宮, 大輔
彌永, 由美
河中, 功一
山下, 康行
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| 内容記述 |
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内容記述タイプ |
Abstract |
|
内容記述 |
Purpose: To investigate the detectability of simulated pulmonary nodules with different X-ray attenuation by flat-panel detector (FPD) chest radiography using a dual-exposure dual-energy subtraction (DES) technique. Materials and Methods: Using a FPD radiography system we obtained 108 sets of chest radiographs of a chest phantom. They consisted of 54 sets each of chest radiographs with- and without simulated nodules. Each data set contained a standard- and a corresponding dual-energy subtracted chest radiograph (DES image). The diameter of the simulated nodules was 8-, 10-, and 12 mm; nodules of each size manifested attenuation of -450, -200, and 30 Hounsfield units (HU). We performed receiver operating characteristic (ROC) analysis to compare the observers’ performance in detecting nodules. Results: For -450 HU nodules the mean area under the ROC curve (AUC) without and with DES images was 0.66 and 0.77, respectively; the difference was significant (paired t-test, p < 0.01). For nodules with -200- and 30 HU, there was no significant difference in the AUC value (0.79 vs. 0.77, p=0.13; 0.92 vs. 0.94, p=0.17, respectively). Conclusion: The addition of DES images to standard chest radiographs improved the performance of radiologists charged with detecting simulated nodules with an attenuation of -450 HU. |
| bibliographic_information |
en : Japanese Journal of Radiology
巻 28,
号 3,
p. 214-219,
発行年 2010-04
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| item_16_source_id_7 |
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収録物識別子 |
1867-1071 |
| 権利 |
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権利情報 |
(C) Japan Radiological Society 2010 |
| 権利 |
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権利情報 |
Springer |
| 出版タイプ |
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|
出版タイプ |
AM |
|
出版タイプResource |
http://purl.org/coar/version/c_ab4af688f83e57aa |
| 日本十進分類法 |
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|
主題Scheme |
NDC |
|
主題 |
492.4 |
| 出版者 |
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出版者 |
Springer |
| 出版者 |
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出版者 |
Japan Radiological Society |
| 関連 |
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関連タイプ |
isVersionOf |
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|
識別子タイプ |
DOI |
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|
関連識別子 |
http://doi.org/10.1007/s11604-009-0411-7 |
JJR_28_3_214-219.pdf (295.8 kB)
