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US 9,435,900 B2Granted
X-ray system utilizing alternating spectrum x-ray source in conjuction with a fixed spectrum separation filter approval
AssigneeThe Board of Trustees of the Leland Stanford Junior University
InventorsYuan Yao, Norbert J. Pelc
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Abstract
An apparatus for x-ray imaging of an object is provided. An x-ray source for providing alternating x-ray spectrums is placed on a first side of the object. A spectrum separation fixed filter is placed between the x-ray source and the object. An x-ray detector is placed on a second side of the object opposite the x-ray source. A controller controls the x-ray source and the x-ray detector.
Claims19
An apparatus for x-ray imaging of an object, comprising:
- an x-ray source for providing alternating x-ray spectrums placed on a first side of the object;
- a spectrum separation fixed filter between the x-ray source and the object, wherein the fixed filter does not move or change with respect to the x-ray source during a scan, wherein alternating x-ray spectrums pass through the spectrum separation fixed filter along a common path, so that the fixed filter increases spectrum separation of the alternating x-ray spectrums;
- an x-ray detector placed on a second side of the object opposite the x-ray source;
- and
- a controller for controlling the x-ray source and the x-ray detector.
2 more elements
A method for providing x-ray imaging of an object, comprising:
- a) providing from an x-ray source with at least two different alternating kVp x-rays with a first kVp potential and a second kVp potential;
- b) passing the alternating kVp x-rays through a spectrum separation fixed filter, wherein the alternating kVp x-rays pass through the spectrum separation fixed filter along a common path, so that the spectrum separation fixed filter increases spectrum separation between x-rays with the first kVp potential and x-rays with the second kVp potential, wherein the fixed filter does not move or change with respect to the x-ray source during a scan;
- c) passing the kVp x-rays through the object;
- d) detecting at a detector the x-rays that pass through the object at the first kVp potential and the second kVp potential;
- e) applying material decomposition to detected x-rays;
- and
- f) using the material decomposition to generate an image.
4 more elements
Dependencies are inferred from the claim text.