2011 Fiscal Year Final Research Report
Phase-contrast imaging using parametric X-rays
| Project/Area Number |
21560055
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Applied physics, general
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| Research Institution | High Energy Accelerator Research Organization (2011)
Nihon University (2009-2010) |
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Principal Investigator |
TAKAHASHI Yumiko 大学共同利用機関法人高エネルギー加速器研究機構, 物質構造科学研究所, 研究員 (70339258)
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| Project Period (FY) |
2009 – 2011
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| Keywords | 物理計測・制御 / パラメトリックX線 |
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| Research Abstract |
A novel X-ray source based on Parametric X-ray radiation(PXR) has been employed for phase-contrast imaging at the Laboratory for Electron Beam Research and Application(LEBRA), Nihon University, Japan.
Since the angular distribution of PXR has a width of～1/γ(γ: the Lorentz factor), the X-ray beam profile at the take-out window, which is located about 7 m downstream from the source, becomes approximately 100 mm in diameter. For an efficient use of the large irradiated area of PXR in imaging, Laue geometry of diffraction enhanced imaging has been studied. The five times larger visual field than Bragg geometry has been achieved in the present analyzer(60 mm in width).
Particular properties of PXR, i. e. angular divergence and horizontal energy dispersion were confirmed by simulation and experiments. The effects attributed to these were, however, scarcely ever recognized in the images.
These results indicate the feasibility of the PXR-DEI as a tool for medical diagnoses.
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