2003 Fiscal Year Final Research Report Summary
Three dimensional image construction of heavy ion CT with use of residual range measurement
| Project/Area Number |
13470188
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Radiation science
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| Research Institution | Ibaraki Prefectural University of Health Science |
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Principal Investigator |
NISHIMURA Katsuyuki IPU, Radiological Sciences, Professor, 保健医療学部, 教授 (10129158)
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| Co-Investigator(Kenkyū-buntansha) |
SATOH Hitoshi IPU, Radiological Sciences, Research Associate, 助手 (90285057)
ABE Shinji IPU, Radiological Sciences, Associate Professor, 助教授 (00274978)
INADA Tetsuo IPU, Radiological Sciences, Professor, 教授 (50114038)
FUJISAKI Tatsuya IPU, Radiological Sciences, Research Associate, 助手 (00285058)
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| Project Period (FY) |
2001 – 2003
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| Keywords | heavy ion CT / range / relative electron density / 3D display wavelet theory / wavelet theory / spatial resolution / multiple coulomb scattering / ICCD camera |
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| Research Abstract |
The aim of this research is to seek high-speed acquisition and high quality image, by analyzing spatial resolution and contrast resolution and to verify the feasibility of three-dimensional display of heavy ion CT image. Heavy ion CT apparatus was developed. The apparatus consisted of ^<14>C ion beam with 400Mev/u, computer controllable range shifter, fluorescent screen, ICCD video camera. Higher speed acquisition was realized with use of high-speed range modulator and with the development of acquisition program. The contributions of Coulomb multiple scattering, blurring at both the fluorescent screen and CCD video camera system to spatial resolution were analyzed separately and compared with overall spatial resolution. Theoretical relation explains well the results. The electron density resolution was measured as 0.02 relative to water. This agrees with that calculated with use of noise propagation theory from the noises on the projection image. Noise was reduced by the image processing applying the wavelet theory without degrading the spatial resolution. As the projection data were acquired with two-dimensional detector, volume data were useable. Surface rendering images were constructed from the volume data.
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Research Products
(14 results)
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[Publications] Shinji Abe, Katsuyuki Nishimura, Hitoshi Satoh, Hiroshi Muraishi, Tetsuo Inada, Tetsuya Tomida, Tatsuya Fujisaki, Yasuyuki Futami, Tatsuaki Kanai, Kiyomitsu Kawachi, Shuichi Tazawa: "Heavy Ion CT system based on measurement of residual rage distribution"Jpn J Med Phys.. 22. 1-9 (2002)
Description
「研究成果報告書概要(欧文)」より
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[Publications] Hiroshi Muraishi, Katsuyuki Nishimura, Sinji Abe, Hitoshi Satoh, Tetsuya Tomida, Naruomi Yasuda, Akiko Takayama, Tetsuo Inada, Tatuya Fujisaki, Shuichi Tazawa, Tatsuaki Kanai, Kiyomitsu Kawachi: "Simulation Study for Iterative Image Reconstruction including Multiple Coulomb Scattering Correction in Heavy Ion CT"Jpn J Med Phys.. 23[Suppl.3]. 266-269 (2003)
Description
「研究成果報告書概要(欧文)」より
