Positron range correction
AssigneesSiemens Medical Solutions USA, Inc., Ottawa Heart Institute Research Corporation
InventorsMichael E. Casey, Robert deKemp
Life of this patent
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Abstract
A system and method include acquisition of emission data from an object while a radioactive tracer is present in the object, determination of first parameters of a first Gaussian distribution representing a positron range distribution of the radioactive tracer, determination of second parameters of a second Gaussian distribution associated with imaging characteristics of the imaging system, generation of a system matrix based on the first parameters and the second parameters, reconstruction of a three-dimensional image based on the emission data and the system matrix, and display of the three-dimensional image.
Claims18
A method comprising:
- obtaining emission data associated with a radioactive tracer and acquired by an imaging system;
- determining first parameters of a first Gaussian distribution representing a positron range distribution of the radioactive tracer;
- determining second parameters of a second Gaussian distribution associated with imaging characteristics of the imaging system;
- generating a system matrix based on the first parameters and the second parameters;
- and
- reconstructing a three-dimensional image based on the emission data and the system matrix.
A system comprising:
- an imaging system to acquire emission data from an object while a radioactive tracer is present in the object;
- a processing unit to:
- determine first parameters of a first Gaussian distribution representing a positron range distribution of the radioactive tracer;
- determine second parameters of a second Gaussian distribution associated with imaging characteristics of the imaging system;
- generate a system matrix based on the first parameters and the second parameters;
- and
- reconstruct a three-dimensional image based on the emission data and the system matrix;
- and
- a display to display the three-dimensional image.
A non-transitory computer-readable medium storing program code executable by a processing unit to:
- acquire emission data from an object while a radioactive tracer is present in the object;
- determine first parameters of a first Gaussian distribution representing a positron range distribution of the radioactive tracer;
- determine second parameters of a second Gaussian distribution associated with imaging characteristics of the imaging system;
- generate a system matrix based on the first parameters and the second parameters;
- reconstruct a three-dimensional image based on the emission data and the system matrix;
- and
- display the three-dimensional image.
Dependencies are inferred from the claim text.