X-ray imaging data processing device and method
AssigneeKoninklijke Philips N.V.
InventorsMattias Bartels, Thomas Koehler, Ewald Roessl
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Abstract
Data in X-ray images of a medical device is processed in order to reduce vibration artifacts in differential phase contrast imaging. A proportionality factor between an object induced phase shift for a first x-ray energy bin and an object induced phase shift for a second x-ray energy bin is provided. At least one of a dark field signal and an object induced phase shift is determined from a detected intensity value of a pixel for the first energy bin and a detected intensity value of the pixel for the second energy bin using the proportionality factor.
Claims11
A medical device for processing data in X-ray images to reduce vibration artifacts in differential phase contrast imaging, comprising:
- a processor configured to provide a proportionality factor between an object induced phase shift for a first x-ray energy bin and an object induced phase shift for a second x-ray energy bin, and
- determine at least one of a dark field signal and an object induced phase shift from a detected intensity value of a pixel for the first energy bin and a detected intensity value of the pixel for the second energy bin using the proportionality factor.
A differential phase contrast x-ray imaging system, comprising:
- a differential phase contrast imaging unit;
- an x-ray source arranged to provide x-rays of a first and a second energy bin;
- and
- a medical device for processing data in X-ray images to reduce vibration artifacts in differential phase contrast imaging, comprising:
- a processor configured to provide a proportionality factor between an object induced phase shift for a first x-ray energy bin and an object induced phase shift for a second x-ray energy bin, and determine at least one of a dark field signal and an object induced phase shift from a detected intensity value of a pixel for the first energy bin and a detected intensity value of the pixel for the second energy bin using the proportionality factor.
A method for processing data in X-ray images of a medical device to reduce vibration artifacts in differential phase contrast imaging, comprising:
- providing a proportionality factor between an object induced phase shift for a first x-ray energy bin and an object induced phase shift for a second x-ray energy bin;
- and
- determining at least one of a dark field signal and an object induced phase shift from a detected intensity value of a pixel for the first energy bin and a detected intensity value of the pixel for the second energy bin using the proportionality factor.
Dependencies are inferred from the claim text.