| Project/Area Number |
01870007
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| Research Category |
Grant-in-Aid for Developmental Scientific Research (B).
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| Allocation Type | Single-year Grants |
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| Research Field |
Neurophysiology and muscle physiology
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| Research Institution | Faculty of Medicine, University of Tokyo |
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Principal Investigator |
TAKAHASHI Kunitaro Faculty of Medicine, Department of Neurobiology, Institute of Brain Res., University of Tokyo, Professor, 医学部(医), 教授 (10010034)
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| Co-Investigator(Kenkyū-buntansha) |
AKATSUKA Takao Faculty of Engineering, Department of Information Engineering, Yamagata Univ., P, 工学部, 教授 (80091875)
OKAMOTO Harumasa Faculty of Medicine, Department of Neurobiology, Institute of Brain Res., Univer, 医学部(医), 助教授 (40134283)
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| Project Period (FY) |
1989 – 1990
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| Project Status |
Completed (Fiscal Year 1990)
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| Budget Amount *help |
¥10,900,000 (Direct Cost: ¥10,900,000)
Fiscal Year 1990: ¥1,900,000 (Direct Cost: ¥1,900,000)
Fiscal Year 1989: ¥9,000,000 (Direct Cost: ¥9,000,000)
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| Keywords | Multispectral image / Interference-filter exchanger / Cooled-CCD camera / Material-distribution image / 胚細胞分化 / 細胞間相互作用 / 蛍光画像 / フィルタ切換装置 |
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| Research Abstract |
This project aimed to design and make the multispectral image acquiring system consisting of an epifluorescence microscope, a pulse-motor driven interference-filter exchanger, a cooled-CCD camera, and a 32 bit personal computer. The filter exchanger apparatus was designed to insert one out of four interference filters alternatively into the relatively long parallel optical path designed to be placed between the object and eyepiece. The four filters were selected from a set of 11 bandpass filters with half transmittance width 20 nanometer covering the wave length range from 400 to 600 nanometer. The exchange was driven by a computer-controlled pulse motor for which commands were delivered through the interface of the personal computer. The fluorescence images were acquired through the noise-less, ultra-widely dynamically ranged and ultra-highly sensitive cooled-CCD camera. The image acquisition was performed by the commands from the personal computer through the GPIB interface. The embryonic preparation injected with multiple fluorescent dyes or fixed and stained with fluorescent probes were used for obtaining multiple spectral images with this system. The obtained images were analyzed by the programs to extract the material images from the multispectral images, such as proposed by Kawata et al. The programs performed the calculation of fluorescence intensity matrix. The eigen values of the matrix represented the ratios of principal components and the values helped to determine the number of the component chemicals which were responsible for the multispectral images. Then, knowing the spectra of the chemicals, it was possible to reconstruct the material images from multispectral images.
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