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US 2010/0073674 A1Published application
Measurement apparatus and measurement method
AssigneeCanon Kabushiki Kaisha
InventorHirofumi Yoshida
Life of this patent
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Abstract
A measurement apparatus includes a DOT measurement unit, an AOT measurement unit, and a controller configured to calculate at least one of an absorption characteristic and a scattering characteristic of a test region set in an test object by utilizing one of the DOT measurement unit and the AOT measurement unit, which one has a smaller measurement size.
Claims5
A measurement apparatus comprising:
- a first measurement unit configured to measure a spectroscopic characteristic inside of a test object that is an absorption-scattering medium, by applying a diffused light tomography;
- a second measurement unit configured to measure the spectroscopic characteristic inside of the test object by applying an acousto-optical tomography;
- and
- a controller configured to calculate at least one of an absorption characteristic and a scattering characteristic of a test region that is set in the test object by utilizing one of the first measurement unit and the second measurement unit, which one has a smaller measurement size.
1 more element
A measurement method comprising:
- calculating at least one of an absorption characteristic and a scattering characteristic of a test region that is set in a test object that is an absorption-scattering medium, using a first measurement unit that is configured to measure a spectroscopic characteristic in the test object utilizing a diffused light tomography and that includes a photodetector configured to detect light that has passed inside of the test object and is emitted outside of the test object;
- calculating at least one of the absorption characteristic and the scattering characteristic of the test region in the test object using a second measurement unit that is configured to measure the spectroscopic characteristic in the test object utilizing an acousto-optical tomography, and that includes an ultrasonic transducer configured to focus and irradiate an ultrasonic wave upon the test region in the test object;
- obtaining a size of a mesh that is a division unit of the test region;
- obtaining a focus diameter of an ultrasonic focus region from the ultrasonic transducer;
- and
- selecting one of the first measurement unit and the second measurement unit which one has a smaller measurement size from the size of the mesh and the focus diameter.
3 more elements
Dependencies are inferred from the claim text.