Ct imaging system
AssigneeKoninklijke Philips Electronics N. V.
InventorRoland Proksa
Life of this patent
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Abstract
The invention relates to a CT imaging system for determining the flow of a substance within an object, wherein the CT imaging system comprises a polychromatic X-ray source and an energy-resolving X-ray detector for obtaining detection signals depending on the X-ray radiation after passing through the object. A calculation unit (12) determines a k-edge 5 component of the substance from the detection signals, and a reconstruction unit (13) reconstructs a time series of k-edge image from the determined k-edge component. A flow determination unit (14) determines flow values indicative for the flow within the object from the time series of k-edge images.
Claims13
CT imaging system for determining the flow of a substance within an object, comprising:
- a polychromatic X-ray source for emitting polychromatic X-ray radiation,
- an energy-resolving X-ray detector for obtaining detection signals depending on the X-ray radiation after passing through the object,
- a calculation unit for determining a k-edge component of the substance from the detection signals,
- a reconstruction unit for reconstructing a time series of k-edge images from the determined k-edge component,
- a flow determination unit for determining flow values indicative for the flow within the object from the time series of k-edge images.
Determination device for determining the flow of a substance within an object, the determination device being provided with detection signals, the detection signals being obtained by an energy resolving X-ray detector for obtaining detection signals depending on X-ray radiation emitted by a polychromatic X-ray after passing through the object, comprising:
- a calculation unit for determining a k-edge component of the substance from the detection signals,
- a reconstruction unit for reconstructing a time series of k-edge images from the determined k-edge component,
- a flow determination unit for determining flow values indicative for the flow within the object from the time series of k-edge images.
CT imaging method for determining the flow of a substance within an object, comprising the steps of:
- emitting polychromatic X-ray radiation by a polychromatic X-ray source for,
- obtaining detection signals depending on the X-ray radiation after passing through the object by an energy-resolving X-ray detector,
- determining a k-edge component of the substance from the detection signals by a calculation unit,
- reconstructing a time series of k-edge images from the determined k-edge component by a reconstruction unit,
- determining flow values indicative for the flow within the object from the time series of k-edge images by a flow determination unit.
Determination method for determining the flow of a substance within an object, the determination method being provided with detection signals, the detection signals being obtained by an energy resolving X-ray detector for obtaining detection signals depending on X-ray radiation emitted by a polychromatic X-ray after passing through the object, comprising:
- determining a k-edge component of the substance from the detection signals by a calculation unit,
- reconstructing a time series of k-edge images from the determined k-edge component by a reconstruction unit,
- determining flow values indicative for the flow within the object from the time series of k-edge images by a flow determination unit.
Computer program for determining the flow of a substance within an object, comprising program code means for causing a computer to carry out the
Dependencies are inferred from the claim text.