Phantom calibration device for low level light imaging systems
First Claim
1. A phantom device for use with a low-level light imaging system, the phantom device comprising:
- a body including one or more surfaces and an optically selective material designed to at least partially resemble the optical behavior of mammalian tissue; and
a low intensity light source disposed within the body and configured to emit light from within the body, through the optically selective material and to the one or more surfaces, wherein the light source is configured to emit a photon flux in the range of about 104 to about 1013 photons/second.
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Abstract
The present invention relates to a phantom device that simplifies usage and testing of a low intensity light imaging system. The phantom device includes a body and a light source internal to the body. The body comprises an optically selective material designed to at least partially resemble the optical behavior of mammalian tissue. Imaging the light source or phantom device may incorporate known properties of the optically selective material. Testing methods described herein assess the performance of a low-level light imaging system (such as the software) by processing light output by the phantom device and comparing the output against known results. The assessment builds a digital representation of the light source or test device and compares one or more components of the digital representation against one or more known properties for the light source or the test device.
75 Citations
47 Claims
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1. A phantom device for use with a low-level light imaging system, the phantom device comprising:
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a body including one or more surfaces and an optically selective material designed to at least partially resemble the optical behavior of mammalian tissue; and
a low intensity light source disposed within the body and configured to emit light from within the body, through the optically selective material and to the one or more surfaces, wherein the light source is configured to emit a photon flux in the range of about 104 to about 1013 photons/second. - 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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23. A phantom device for testing a low-level light imaging system, the device comprising:
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a body including one or more surfaces and a substantially homogeneous and optically selective material design ed to at least partially resemble the optical behavior of mammalian tissue, wherein the body includes a shape that resembles a mammal to be imaged and wherein a height for the body is designed to resemble a height of the mammal; and
a low intensity light source disposed within the body and configured to emit light from within the body, through the optically selective material and to the one or more surfaces. - View Dependent Claims (24, 25, 26, 27, 28)
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29. A method for testing a low-level light imaging system, the method comprising:
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capturing an image of at least a portion of a phantom device disposed in a field of view for a camera included in the low-level light imaging system, the phantom device comprising a body including an optically selective material designed to at least partially resemble the optical behavior of mammalian tissue;
building a digital representation of a light source internal to the phantom device using data included in the image; and
comparing a component of the digital representation to a known property for the light source or the phantom device. - View Dependent Claims (30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42)
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43. A method for testing a low-level light imaging system, the method comprising:
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calibrating the low-level light imaging system against a known intensity light source;
capturing an image of at least a portion of a phantom device disposed in a field of view for a camera included in the low-level light imaging system;
building a digital representation of a light source internal to the phantom device using data included in the image; and
comparing a component of the digital representation to a known property for the light source or the phantom device.
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44. A computer readable medium including instructions for testing a low-level light imaging system, the instructions comprising:
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instructions for capturing an image of at least a portion of a phantom device disposed in a field of view for a camera included in the low-level light imaging system, the phantom device comprising a body including an optically selective material designed to at least partially resemble the optical behavior of mammalian tissue;
instructions for reconstructing a digital representation of the light source internal to the phantom device using data included in the image; and
instructions for comparing a component of the digital representation to a known property for the light source or the phantom device. - View Dependent Claims (45, 46, 47)
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Specification