MEASUREMENT METHOD AND MEASUREMENT APPARATUS
First Claim
1. A measurement method of measuring a spectroscopic characteristic inside of a scattering medium, said measurement method comprising:
- a first step of measuring the spectroscopic characteristic of the scattering medium by using diffuse optical tomography by irradiating light into the scattering medium;
a second step of measuring the spectroscopic characteristic of the scattering medium by using acousto-optical tomography or photo acoustic tomography by irradiating light into the scattering medium; and
a third step of making an assumption of a distribution of the spectroscopic characteristic inside of the scattering medium and of changing the assumption such that a difference between a predicted value of the spectroscopic characteristic derived from the assumption and a measured value obtained in the first step can fall upon a permissible range,wherein the third step uses data obtained in the second step for at least one of the parameter;
an initial value, a constraint condition, or a boundary condition.
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Abstract
A measurement method of measuring a spectroscopic characteristic inside of a scattering medium includes
a first step of measuring the spectroscopic characteristic of the scattering medium by using diffuse optical tomography by irradiating light into the scattering medium, a second step of measuring the spectroscopic characteristic of the scattering medium by using acousto-optical tomography or photo acoustic tomography by irradiating light into the scattering medium, and a third step of making an assumption of a distribution of the spectroscopic characteristic inside of the scattering medium and of changing the assumption such that a difference between a predicted value of the spectroscopic characteristic derived from the assumption and a measured value obtained in the first step can fall upon a permissible range. The third step uses data obtained in the second step for at least one of the parameter: an initial value, a constraint condition, or a boundary condition.
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Citations
6 Claims
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1. A measurement method of measuring a spectroscopic characteristic inside of a scattering medium, said measurement method comprising:
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a first step of measuring the spectroscopic characteristic of the scattering medium by using diffuse optical tomography by irradiating light into the scattering medium; a second step of measuring the spectroscopic characteristic of the scattering medium by using acousto-optical tomography or photo acoustic tomography by irradiating light into the scattering medium; and a third step of making an assumption of a distribution of the spectroscopic characteristic inside of the scattering medium and of changing the assumption such that a difference between a predicted value of the spectroscopic characteristic derived from the assumption and a measured value obtained in the first step can fall upon a permissible range, wherein the third step uses data obtained in the second step for at least one of the parameter;
an initial value, a constraint condition, or a boundary condition. - View Dependent Claims (2, 3, 4, 5)
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6. A measurement apparatus configured to measure a spectroscopic characteristic inside of a scattering medium, said measurement apparatus comprising:
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a first measurement unit configured to measure the spectroscopic characteristic of the scattering medium by using diffuse optical tomography; a second measurement unit configured to measure the spectroscopic characteristic of the scattering medium by using acousto-optical tomography or photo acoustic tomography; and a signal processing unit configured to make an assumption of a distribution of the spectroscopic characteristic inside of the scattering medium and to change the assumption such that a difference between a predicted value of the spectroscopic characteristic derived from the assumption and a measured value obtained in the first measurement unit can fall upon a permissible range, wherein the signal processing unit uses data obtained in the second measurement unit for at least one of the parameter;
an initial value, a constraint condition, or a boundary condition.
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Specification