| Presentation | 2006-03-15 An Efficient Implementation Method for Dual-Energy CT with Asymmetric Filter Yoichi YAMAZAKI, Naohiro TODA, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | We present a new implementation scheme of the dual energy X-ray CT(Computed Tomography) by applying asymmetric absorption filter in front of the multi-spectrum X-ray tube. Today's ordinary X-ray CT are equipped with symmetrically shaped absorption filter called 'bow-tie filter' in front of the X-ray tube. In our new scheme only by exchanging this bow-tie filter for an asymmetric filter, the function of the energy selective reconstruction can be achieved with one-time 360 degree scan based on the dual-energy principle. This scheme has enough potential to overcome drawbacks of conventional implementation approaches for the dual-energy CT, such as requirements of switching voltages of X-ray tube, mechanically changing filters or increeasing number of sensors or tube. In this paper we introduce a basic idea of asymmetric filter and propose a prototype of designing method for optimum shape of the filter using computer simulations. To show validity of the presented scheme some numerical experiments are performed. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | X-ray CT / Dual-Energy method / Asymmetric filter |
| Paper # | MBE2005-132 |
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| Conference Information | |
| Committee | MBE |
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| Conference Date | 2006/3/8(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | ME and Bio Cybernetics (MBE) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | An Efficient Implementation Method for Dual-Energy CT with Asymmetric Filter |
| Sub Title (in English) | |
| Keyword(1) | X-ray CT |
| Keyword(2) | Dual-Energy method |
| Keyword(3) | Asymmetric filter |
| 1st Author's Name | Yoichi YAMAZAKI |
| 1st Author's Affiliation | Graduate School of Information Science and Technology, Aichi Prefectural University() |
| 2nd Author's Name | Naohiro TODA |
| 2nd Author's Affiliation | Graduate School of Information Science and Technology, Aichi Prefectural University |
| Date | 2006-03-15 |
| Paper # | MBE2005-132 |
| Volume (vol) | vol.105 |
| Number (no) | 655 |
| Page | pp.pp.- |
| #Pages | 4 |
| Date of Issue | |