| 講演名 | 2009-03-10 Continuous-Time Dynamical System for Reconstructing Computed Tomography Image , |
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| PDFダウンロードページ |  PDFダウンロードページへ |
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| 抄録(英) | Transform and iterative methods are used to reconstruct computed tomography (CT) images from a projection dataset. The filtered back-projection (FBP) procedure, which is a transform method, is widely used for CT image reconstruction because of its high reconstruction speed. However, the FBP method produces images with a lot of radial artifacts, which are well-known as metal artifact, for a defective projection dataset with lack of data. Although iterative methods using difference equations can produce better-quality images even for such defective projection dataset, their reconstruction speeds are slower than that of the FBP method. This report presents a new approach for reconstructing CT images. It consists of a continuous-time dynamical system described by differential equations. Using several examples we demonstrate that our system works well. Moreover, a block diagram of our system is drawn to indicate that our system can be created as an analog electronic circuit. An implementation in hardware can yield good-quality, high-speed image reconstruction. |
| キーワード(和) | |
| キーワード(英) | continuos-time dynamical system / image reconstruction / computed tomography / equivalent circuit |
| 資料番号 | NLP2008-158 |
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| 研究会情報 | |
| 研究会 | NLP |
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| 開催期間 | 2009/3/3(から1日開催) |
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| 申込み研究会 | Nonlinear Problems (NLP) |
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| 本文の言語 | ENG |
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| タイトル（英） | Continuous-Time Dynamical System for Reconstructing Computed Tomography Image |
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| キーワード(1)（和/英） | / continuos-time dynamical system |
| 第 1 著者 氏名（和/英） | / Ken'ichi FUJIMOTO |
| 第 1 著者 所属（和/英） | Institute of Health Biosciences, The University of Tokushima |
| 発表年月日 | 2009-03-10 |
| 資料番号 | NLP2008-158 |
| 巻番号（vol） | vol.108 |
| 号番号（no） | 477 |
| ページ範囲 | pp.- |
| ページ数 | 6 |
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