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Abstract
近赤外光による生体内部吸光度分布計測をめざして, 光と超音波の相互作用を利用する新たな手法を考案し, その可能性に関する基礎的検討を行った. 本手法は, 光が伝搬する散乱体内部に複数の超音波変調領域を設け, それらの領域を結ぶ直線に沿った伝搬光を選択的に検出しようとするものである. まず, 選択的信号検出の可能性を確かめた. 次に, 検出光の伝搬領域を調べ, 2変調領域を結ぶ直線に沿った信号をとらえていることを確かめた. さらに, 散乱体内部吸光度計測を試み, 本手法により散乱の影響を軽減できる可能性を示した.
For the measurement of NIR absorption distribution in a biological body, a new technique to use the interaction of light and ultrasound has been devised. In this technique, we provide a plural number of ultrasonic modulation regions in the scattering medium in which light propagates. Using the modulation frequency, we can selectively detect the light which passed along the straight line between the modulation regions. In experimental study, the feasibility of the proposal technique was verified. In the absorption measurement, the possibility to suppress the scattering effect was demonstrated.
Journal
- IEICE technical report. ME and bio cybernetics [List of Volumes]
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IEICE technical report. ME and bio cybernetics 104(757), 5-8, 2005-03-23 [Table of Contents]
The Institute of Electronics, Information and Communication Engineers
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