Attenuation map reconstruction from TOF PET data
First Claim
Patent Images
1. A method for reconstructing an attenuation map for a positron emission tomography (PET) image, the method comprising:
- obtaining time-of-flight (TOF) PET data of the PET image;
estimating the gradient of an attenuation sinogram; and
determining, by a processor, the attenuation map using the estimated gradient of the attenuation sinogram by performing an algorithm,wherein performing the algorithm comprises using the following equation to determine the attenuation map;
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Abstract
Advantageous methods, systems, and computer-readable media are provided. An attenuation map for an image can be reconstructed with no known sub-region of the attenuation map prior to performing the method. Gradient data of an attenuation sinogram can be estimated, and an algorithm can be performed to reconstruct the attenuation map from the estimated gradient data of the attenuation sinogram.
9 Citations
22 Claims
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1. A method for reconstructing an attenuation map for a positron emission tomography (PET) image, the method comprising:
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obtaining time-of-flight (TOF) PET data of the PET image; estimating the gradient of an attenuation sinogram; and determining, by a processor, the attenuation map using the estimated gradient of the attenuation sinogram by performing an algorithm, wherein performing the algorithm comprises using the following equation to determine the attenuation map; - View Dependent Claims (2, 3, 4, 19)
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5. A method for reconstructing an attenuation map for a positron emission tomography (PET) image, the method comprising:
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obtaining time-of-flight (TOF) PET data of the PET image; estimating the gradient of an attenuation sinogram; and determining, by a processor, the attenuation map using the estimated gradient of the attenuation sinogram by performing an algorithm, wherein estimating the gradient of the attenuation sinogram comprises using the following analytical scheme; - View Dependent Claims (6, 7, 8, 17, 20)
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9. A computer-readable medium having computer-executable instructions for performing a method, the method comprising:
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obtaining time-of-flight (TOF) positron emission tomography (PET) data of a PET image; estimating the gradient of an attenuation sinogram; and determining an attenuation map for the PET image using the estimated gradient of the attenuation sinogram by performing an algorithm, wherein performing the algorithm comprises using the following equation to determine the attenuation map; - View Dependent Claims (10, 11, 12, 21)
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13. A computer-readable medium having computer-executable instructions for performing a method, the method comprising:
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obtaining time-of-flight (TOF) positron emission tomography (PET) data of a PET image; estimating the gradient of an attenuation sinogram; and determining an attenuation map for the PET image using the estimated gradient of the attenuation sinogram by performing an algorithm, wherein estimating the gradient of the attenuation sinogram comprises using the following analytical scheme; - View Dependent Claims (14, 15, 16, 18, 22)
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Specification