書誌事項
- タイトル別名
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- Development of Simple Processing for Deleting Undershooting Artifact Using the FBP Method ─Evaluation of Simulation Data─
- アンダーシュートアーチファクト除去のための簡便な処理手法の開発 : シミュレーションデータによる評価
- アンダーシュートアーチファクト ジョキョ ノ タメ ノ カンベン ナ ショリ シュホウ ノ カイハツ : シミュレーションデータ ニ ヨル ヒョウカ
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抄録
The undershooting artifact occurs using the filtered back projection (FBP) method. This artifact is influenced by a ramp filter. Thereby, the fall of the target accumulation and a deficit arise and it becomes a clinical problem. We developed a new image reconstruction method based on the FBP method to delete the undershooting artifact of FBP. The image quality of the FBP method is equivalent to that obtained by an evaluation using a digital phantom. The two segmentation and ordinary FBP methods were evaluated in terms of hot contrast, cold contrast, coefficient of variation (%CV), and root mean square uncertainty (%RSMU). The two segmentation FBP method showed equivalent values of hot contrast, % CV, and% RSMU compared with those of the ordinary FBP method. With a threshold level value, cold contrast sharply changed. However, when the threshold level of the two segmentation FBP method was set as the proper value, 90% contrast was obtained. It is necessary to set a threshold level as a proper value using the two segmentation FBP methods. I thought that it can delete an artifact in a simple way, without impairing the image quality. However, it is an examination of only a digital phantom this time. Before using it clinically, one has to use and verify a real phantom.
収録刊行物
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- 日本放射線技術学会雑誌
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日本放射線技術学会雑誌 71 (3), 201-207, 2015
公益社団法人 日本放射線技術学会
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キーワード
詳細情報
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- CRID
- 1390282681339514496
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- NII論文ID
- 130004776334
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- NII書誌ID
- AN00197784
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- ISSN
- 18814883
- 03694305
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- NDL書誌ID
- 026281767
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- PubMed
- 25797662
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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
- NDL
- Crossref
- PubMed
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可