X-ray imaging apparatus
AssigneeFUJIFILM Corporation
InventorTakafumi Ishitsu
Life of this patent
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Abstract
Provided is an X-ray imaging apparatus capable of stabilizing polarization of a photon counting detector and suppressing ineffective exposure of a subject. An X-ray imaging apparatus comprises an X-ray source that irradiates an X-ray, a photon counting detector that counts an X-ray photon for each energy bin, and an image generation unit that generates a medical image of a subject based on a detector output from the photon counting detector. The X-ray imaging apparatus further comprises a control unit that checks, in a case where polarization of the photon counting detector is not stable, the subject not being present in an X-ray irradiation field which is a range where the X-ray is irradiated from the X-ray source and then causes the X-ray source to irradiate the photon counting detector with the X-ray.
Claims11
An X-ray imaging apparatus comprising:
- an X-ray source that irradiates an X-ray;
- a photon counting detector that counts an X-ray photon for each energy bin;
- and
- an image generation unit that generates a medical image of a subject based on a detector output from the photon counting detector,
- wherein the X-ray imaging apparatus further comprises a control unit, and the control unit is configured to:
- determine whether polarization of the photon counting detector is not stable according to an elapsed time from previous imaging;
- and
- in a case where the polarization of the photon counting detector is not stable and the subject not being present in an X-ray irradiation field which is a range where the X-ray is irradiated from the X-ray source, cause the X-ray source to irradiate the photon counting detector with the X-ray.
An imaging method, comprising:
- irradiating, by an X-ray source, an X-ray;
- counting, by a photon counting detector, an X-ray photon for each energy bin;
- generating, by an image generation unit, a medical image of a subject based on a detector output from the photon counting detector;
- determining, by a control unit, whether polarization of the photon counting detector is not stable according to an elapsed time from previous imaging;
- and
- in a case where the polarization of the photon counting detector is not stable and the subject not being present in an X-ray irradiation field which is a range where the X-ray is irradiated from the X-ray source, causing the X-ray source to irradiate the photon counting detector with the X-ray.
Dependencies are inferred from the claim text.