Imaging system for imaging a region of interest from energy-dependent projection data
AssigneeKoninklijke Philips Electronics N.V.
InventorRoland Proksa
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Abstract
The invention relates to an imaging system for imaging a region of interest from energy-dependent projection data, wherein the imaging system comprises a projection data providing unit (1, 2, 3, 6, 7, 8) for providing energy-dependent first projection data of the region of interest. The imaging system comprises further an attenuation component image generation unit (12) for generating attenuation component images of the region of interest by generating energy-dependent second projection data using a model in which the projection data depend on attenuation component images. The component image generation unit (12) is adapted for generating the attenuation component images such that deviations of the second projection data from the first projection data are reduced.
Claims20
An imaging system, comprising:
- a projection data providing unit for providing energy-dependent first projection data of a region of interest;
- and
- an attenuation component image generation unit to generate a first attenuation component image of the region of interest and a second attenuation component image of the region of interest, where the first attenuation component image and the second attenuation component image are generated by generating energy-dependent second projection data from the energy-dependent first projection data using a model that extracts a first attenuation data set from the energy-dependent first projection data and that extracts a second attenuation data set from the energy-dependent first projection data, where the energy-dependent second projection data includes the first attenuation data set and the second attenuation data set, and where deviations of the second projection data from the first projection data are minimized.
A determination device for determining attenuation component images of a region of interest from provided energy-dependent first projection data, comprising:
- an attenuation component image generation unit for generating attenuation component images of the region of interest by generating energy-dependent second projection data using a model, wherein the attenuation component image generation unit is adapted for generating the attenuation component images such that deviations of the second projection data from the first projection data are reduced.
A determination method for determining attenuation component images of a region of interest from provided energy-dependent first projection data, comprising:
- generating attenuation component images of the region of interest by generating energy-dependent second projection data using a model that creates the energy-dependent second projection data from the energy-dependent first projection data, wherein the attenuation component images are generated such that deviations of the second projection data from the first projection data are reduced.
A method, comprising:
- acquiring a first energy-dependent projection data set of a region of interest;
- generating a second energy-dependent projection data set, where the second energy-dependent projection data set is derived from the first energy-dependent projection data set;
- and
- producing at least two attenuation component images from the second energy-dependent projection data set, where similarity between the second energy-dependent projection data set and the first energy-dependent projection data set is maximized.
Dependencies are inferred from the claim text.