Methods and systems for imaging
First Claim
1. A method for producing an image comprising:
- obtaining measurement data for a coincidence photon event;
generating a line projector function based on the obtained measurement data;
obtaining additional measurement data for a single detected photon;
generating a cone-surface projector function based on the additional measurement data;
reconstructing an image using said generated line projector function and said generated cone-surface projector function.
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Accused Products
Abstract
Methods and systems for producing an image. Measurement data is obtained for a coincidence photon event, and a line projector function is generated based on the obtained measurement data. Additional measurement data is obtained for a single photon event, and a cone-surface projector function is generated based on the additional measurement data. An image is reconstructed using the generated line projector function and the generated cone-surface projector function. In another example method for producing an image, a measurement is obtained, and a projector function is generated using the obtained measurement. The generated projector function is modified based on an a priori image. An image is reconstructed using the modified projector function.
25 Citations
41 Claims
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1. A method for producing an image comprising:
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obtaining measurement data for a coincidence photon event; generating a line projector function based on the obtained measurement data; obtaining additional measurement data for a single detected photon; generating a cone-surface projector function based on the additional measurement data; reconstructing an image using said generated line projector function and said generated cone-surface projector function. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 17, 18, 19)
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11. A system for radiation-based imaging comprising:
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a plurality of 3-D detectors disposed with respect to a source of emitted photons to receive the emitted photons and produce interactions, the interactions detecting at least coincidence photons and single detected photons; an image generator coupled to said plurality of 3-D detectors to receive a position and energy for the produced interactions and reconstruct an image; said image generator being configured to generate a line projector function based on detected coincidence photons and a cone-surface projector function based on single detected photons, and reconstruct an image using the generated line projector function and cone-surface projector function. - View Dependent Claims (12, 13, 14, 15, 16)
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20. A method of imaging a subject using tomographic imaging, the method comprising:
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obtaining a measurement of the subject; generating a projector function using the obtained measurement; modifying the generated projector function based on an a priori image of the subject; reconstructing an image of the subject using the modified projector function. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 39, 40, 41)
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32. A system for tomographic imaging, comprising:
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a plurality of detectors disposed with respect to a subject to obtain measurement data; an image generator coupled to said plurality of detectors for reconstructing an image based on the obtained measurement data; a source of an a priori image of the subject; wherein said image generator is configured to generate a projector function using the obtained measurement data, modify the generated projector function using the a priori image, and reconstruct the image using the modified projector function. - View Dependent Claims (33, 34, 35, 36, 37, 38)
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Specification