X-ray imaging apparatus and monochromatic x-ray generating method
AssigneeCanon Medical Systems Corporation
InventorGo Kawata
Life of this patent
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Abstract
An X-ray imaging apparatus according to an embodiment of the present disclosure includes an X-ray tube, a photon counting X-ray detector, and a filter unit. A generating unit of the X-ray tube is configured to generate X-rays. The photon counting X-ray detector is configured to count photons contained in the X-rays. The filter unit is provided between the X-ray tube and the photon counting X-ray detector. The filter unit includes a first filter and a second filter. The first filter is configured to shape a spectrum of the X-rays. The second filter is configured to generate X-ray fluorescence on the basis of X-rays related to a spectrum resulting from the shaping by the first filter.
Claims11
An X-ray imaging apparatus comprising:
- an X-ray tube configured to generate X-rays;
- a photon counting X-ray detector configured to count photons contained in the X-rays;
- and
- a filter unit provided between the X-ray tube and the photon counting X-ray detector, wherein
- the filter unit includes:
- a first filter configured to shape a spectrum of the X-rays;
- and
- a second filter configured to generate X-ray fluorescence on a basis of X-rays related to a spectrum resulting from the shaping by the first filter.
A monochromatic X-ray generating method comprising:
- causing X-rays to become incident to a first filter configured to shape a spectrum of the X-rays;
- causing X-rays related to a spectrum resulting from the shaping by the first filter to become incident to a second filter arranged on an X-ray exit side of the first filter;
- and
- causing a second filter to generate monochromatic X-rays by using the X-rays related to the spectrum resulting from the shaping by the first filter.
Dependencies are inferred from the claim text.