Optical system for measuring metabolism in a body and imaging method
First Claim
1. An optical system for measuring change in hemodynamic movement comprising:
- a plurality of light irradiators configured to irradiate light rays on a subject;
a plurality of light receivers configured to receive light rays passing through a skin and reflected within said subject, wherein a plurality of measuring points in said subject are on intermediate positions between irradiating positions on which said light irradiators are disposed and detecting positions on which said receivers are disposed;
a computing unit configured to calculate signals of an object to be measured at said measuring points on the basis of the signals received by said light receivers; and
an image display unit configured to display the signals of said object at said measuring points as a spatial signal intensity distribution corresponding to position coordinates of said measuring points.
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Abstract
In an optical measurement system and imaging method adapted to measure in vivo information in a living body without harming the living body, light rays of a plurality of wavelengths which are modulated in intensity with a plurality of different frequencies are irradiated on a plurality of irradiation positions on the surface of a living body, and time-variable changes in living body transmitting light intensity levels corresponding to the respective wavelengths and the respective irradiation positions are measured at different positions on the surface of the living body. Light is utilized to image the results of the measurements, in which the measuring time is shortened by estimating fluctuation attributable to the living body, and the presence or absence of a change in measured signal can be decided easily by displaying an estimation signal and a measured signal at a time.
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Citations
22 Claims
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1. An optical system for measuring change in hemodynamic movement comprising:
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a plurality of light irradiators configured to irradiate light rays on a subject; a plurality of light receivers configured to receive light rays passing through a skin and reflected within said subject, wherein a plurality of measuring points in said subject are on intermediate positions between irradiating positions on which said light irradiators are disposed and detecting positions on which said receivers are disposed; a computing unit configured to calculate signals of an object to be measured at said measuring points on the basis of the signals received by said light receivers; and an image display unit configured to display the signals of said object at said measuring points as a spatial signal intensity distribution corresponding to position coordinates of said measuring points. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification