Radiation imaging apparatus and control method and program of the apparatus
AssigneeCanon Kabushiki Kaisha
InventorTakashi Takasaki
Life of this patent
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Abstract
An energy control unit continuously adjusts energy of radiations in one shot emitted by an X-ray irradiation unit. An X-ray detection unit generates a plurality of image data pieces in one shot by detecting the radiations whose energy is continuously adjusted and transmitted through a subject. An image classification unit classifies the plurality of image data pieces generated by the X-ray detection unit into image data generated by the radiations of a high energy side and image data generated by the radiations of a low energy side. An image subtraction unit performs weighting and subtraction on the image data generated by the radiations of the high energy side and the image data generated by the radiations of the low energy side.
Claims18
An apparatus for radiation imaging comprising:
- an irradiation unit configured to irradiate an object with radiations that tube voltage of the irradiation unit is continuously changed in one shot;
- a radiation detector configured to detect radiations, which are irradiated by the irradiation unit, in one shot through the object;
- an obtaining unit configured to obtain image data from the radiation detector;
- and
- a classification unit configured to classify image data into a first group and a second group, wherein image data corresponding to a low energy side is classified into the first group, and image data corresponding to a high energy side is classified into the second group based on an elapsed time corresponding to radiations irradiated by the irradiation unit.
A method for radiation imaging comprising:
- irradiating an object with radiations that tube voltage of an irradiation unit is continuously changed in one shot;
- detecting radiations with a radiation detector, which irradiations are irradiated by the irradiation unit, in one shot through the object;
- obtaining image data from the radiation detector;
- and
- classifying image data into a first group and a second group, wherein image data corresponding to a low energy side is classified into the first group, and image data corresponding to a high energy side is classified into the second group based on an elapsed time corresponding to radiations irradiated by the irradiation unit.
A computer-readable storage medium storing thereon a program, which when executed by a computer causes the computer to perform a method for radiation imaging comprising:
- irradiating an object with radiations that tube voltage of an irradiation unit is continuously changed in one shot;
- detecting radiations with a radiation detector, which irradiations are irradiated by the irradiation unit, in one shot through the object;
- obtaining image data from the radiation detector;
- and
- classifying image data into a first group and a second group, wherein image data corresponding to a low energy side is classified into the first group, and image data corresponding to a high energy side is classified into the second group based on an elapsed time corresponding to radiations irradiated by the irradiation unit.
Dependencies are inferred from the claim text.