STANDARDIZED UPTAKE VALUE (SUV) GUIDED RECONSTRUCTION CONTROL FOR IMPROVED OUTCOME ROBUSTNESS IN POSITRON EMISSION TOMOGRAPHY (PET) IMAGING
First Claim
1. A nuclear medicine image reconstruction device comprising:
- an electronic processor; and
a non-transitory storage medium storing instructions readable and executable by the electronic processor to perform an image reconstruction method including;
generating a reconstructed image by performing iterative image reconstruction on nuclear medicine imaging data wherein the iterative image reconstruction produces a sequence of update images; and
during the iterative image reconstruction, applying a standardized uptake value (SUV) transform to convert an update image to an update SUV image and adjusting at least one parameter of the iterative image reconstruction using the update SUV image;
wherein the SUV transform operates to scale values of voxels of the update image to SUV values using scaling factors including at least a body size metric and a dose metric.
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Abstract
A nuclear medicine image reconstruction method generates a reconstructed image (44) by performing iterative image in reconstruction (30, 130) on nuclear medicine imaging data (22). The iterative image reconstruction produces a sequence of update images (34, 36, 134, 136). During the iterative image reconstruction, a standardized uptake value (SUV) transform (40) is applied to convert an update image (34, 36) to an update SUV image (42, 46). The SUV transform scales values of voxels of the update image to SUV values using scaling factors including at least a body size metric and a dose metric. During the iterative image reconstruction, at least one parameter used in an image update of the iterative image reconstruction is adjusted using the update SUV image. For example, a parameter of a prior or filter (38) incorporated into an image reconstruction update step (32) or used in filtering of an update image (36) may be adjusted.
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Citations
22 Claims
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1. A nuclear medicine image reconstruction device comprising:
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an electronic processor; and a non-transitory storage medium storing instructions readable and executable by the electronic processor to perform an image reconstruction method including; generating a reconstructed image by performing iterative image reconstruction on nuclear medicine imaging data wherein the iterative image reconstruction produces a sequence of update images; and during the iterative image reconstruction, applying a standardized uptake value (SUV) transform to convert an update image to an update SUV image and adjusting at least one parameter of the iterative image reconstruction using the update SUV image; wherein the SUV transform operates to scale values of voxels of the update image to SUV values using scaling factors including at least a body size metric and a dose metric. - View Dependent Claims (2, 3, 4, 5, 7, 9, 10, 11, 12, 13)
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6. (canceled)
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8. (canceled)
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14. A non-transitory storage medium storing instructions readable and executable by an electronic processor to perform an image reconstruction method comprising:
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generating a reconstructed image by performing iterative image reconstruction on nuclear medicine imaging data wherein the iterative image reconstruction produces a sequence of update images; during the iterative image reconstruction, applying a standardized uptake value (SUV) transform to convert an update image to an update SUV image wherein the SUV transform operates to scale values of voxels of the update image to SUV values using scaling factors including at least a body size metric and a dose metric; and during the iterative image reconstruction, adjusting at least one parameter used in an image update of the iterative image reconstruction using the update SUV image. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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21. An image reconstruction method comprising:
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generating a reconstructed image by performing iterative image reconstruction on nuclear medicine imaging data wherein the iterative image reconstruction produces a sequence of update images; converting the reconstructed image to a standardized uptake value (SUV) image using an SUV transform that scales values of voxels of the reconstructed image using scaling factors including at least a body size metric and a dose metric; and generating a clinical image by filtering the SUV image using a filter with at least one parameter that is locally adjusted on the basis of local voxel values of the SUV image; wherein the image reconstruction method is performed by an electronic processor. - View Dependent Claims (22)
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Specification