A 200-Channel Imaging System of Muscle Oxygenation Using CW Near-Infrared Spectroscopy(Special Issue on Measurements and Visualization Technology of Biological Information)
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概要
- 論文の詳細を見る
We have developed a 200-channel imaging system that enables measurement of changes in oxygenation and blood volume and that covers a wider area(45cm × 15cm)than that covered by conventional systems. This system consisted of 40 probes of five channels, a light-emitting diode(LED)driver, multiplexers and a personal computer. Each probe was cross-shaped and consisted of an LED, five photo diodes, and a current-to-voltage(I-V)converter. Lighting of the LEDs and acquisition of 200-channel data were time-multiplexed. The minimum data acquisition time for 200 channels, including the time required for calculation of oxygenation and monitoring of a few traces of oxygenation on a computer display, was about 0.2s. We carried out exercise tests and measured the changes in oxy- and deoxy-hemoglobin concentrations in the thigh. Working muscles in exercises could be clearly imaged, and spatio-temporal changes in muscle oxygenation during exercise and recovery were also shown. These results demonstrated that the 200-channel imaging system enables observation of the distribution of muscle metabolism and localization of muscle function.
- 社団法人電子情報通信学会の論文
- 2002-01-01
著者
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Hirai Kosuke
The Division Of Biomedical Systems Engineering Graduate School Of Engineering Hokkaido University
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Katsumura Toshihito
Hachioji Medical Center
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Kime Ryotaro
Department Of Preventive Medicine And Public Health Tokyo Medical University
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Hamaoka Takafumi
Department Of Sports Medicine And Science National Institute Of Fitness And Sports
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Kudo Nobuki
The Division Of Biomedical Systems Engineering Graduate School Of Engineering Hokkaido University
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Katsumura Toshihito
Department Of Preventive Medicine And Public Health Tokyo Medical College
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NIWAYAMA Masatsugu
the Department of Electrical and Electronic Engineering, Faculty of Engineering, Shizuoka University
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YAMAMOTO Katsuyuki
the Division of Biomedical Systems Engineering, Graduate School of Engineering, Hokkaido University
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KOHATA Daisuke
the Division of Biomedical Systems Engineering, Graduate School of Engineering, Hokkaido University
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HAMAOKA Takafumi
the Department of Preventive Medicine and Public Health, Tokyo Medical College
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KIME Ryotaro
the Department of Preventive Medicine and Public Health, Tokyo Medical College
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KATSUMURA Toshihito
the Department of Preventive Medicine and Public Health, Tokyo Medical College
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Kohata Daisuke
The Division Of Biomedical Systems Engineering Graduate School Of Engineering Hokkaido University
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Yamamoto Katsuyuki
The Division Of Biomedical Systems Engineering Graduate School Of Engineering Hokkaido University
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Niwayama Masatsugu
The Department Of Electrical And Electronic Engineering Faculty Of Engineering Shizuoka University
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Kime Ryotaro
Department Of Sports Medicine For Health Promotion Tokyo Medical University
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