Radiation imaging system, imaging control apparatus, and method
AssigneeCanon Kabushiki Kaisha
InventorsAtsushi Iwashita, Akira Tsukuda, Kosuke Terui, Sota Torii, Takeshi Noda
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Abstract
An imaging control apparatus obtains a plurality of images at different radiation energies, the images having been obtained as a result of irradiating a subject with radiation whose energy changes during one shot, and detecting, a plurality of times, the radiation that has passed through the subject during the one shot; generates an energy subtraction image by performing energy subtraction processing using a plurality of images; and generates a difference image using a plurality of generated energy subtraction images.
Claims19
An imaging control apparatus comprising:
- at least one of (a) one or more processors connected to one or more memories storing a program including instructions executed by the one or more processors and (b) circuitry configured to function as:
- performing energy subtraction processing using a plurality of pieces of information related to different radiation energies to generate an energy subtraction image, the plurality of pieces of information being obtained by sampling at least twice in a period which is within a one shot in which a subject is irradiated with radiation whose energy changes during the one shot and which is between consecutive resets in a two-dimensional detector;
- and
- generating a difference image using a plurality of energy subtraction images generated by the energy subtraction processing.
An imaging control method for radiography, comprising:
- performing energy subtraction processing using a plurality of pieces of information related to different radiation energies to generate an energy subtraction image, the plurality of pieces of information being obtained by sampling at least twice in a period which is within a one shot in which a subject is irradiated with radiation whose energy changes during the one shot and which is between consecutive resets in a two-dimensional detector;
- and
- generating a difference image using a plurality of generated energy subtraction images generate by the energy subtraction processing.
A radiation imaging system comprising:
- an imaging control apparatus comprising at least one of (a) one or more processors connected to one or more memories storing a program including instructions executed by the one or more processors and (b) circuitry configured to function as:
- performing energy subtraction processing using a plurality of pieces of information related to different radiation energies to generate an energy subtraction image, the plurality of pieces of information being obtained by sampling at least twice in a period which is within a one shot in which a subject is irradiated with radiation whose energy changes during the one shot and which is between consecutive resets in a two-dimensional detector;
- and
- generating a difference image using a plurality of energy subtraction images generated by the energy subtraction processing;
- a radiation imaging apparatus that includes a two-dimensional detector;
- and
- a radiation generation apparatus that generates radiation.
A non-transitory computer-readable storage medium storing a program for causing a computer to execute an imaging control method for radiography, the method comprising:
- performing energy subtraction processing using a plurality of pieces of information related to different radiation energies to generate an energy subtraction image, the plurality of pieces of information being obtained by sampling at least twice in a period which is within a one shot in which a subject is irradiated with radiation whose energy changes during the one shot and which is between consecutive resets in a two-dimensional detector;
- and
- generating a difference image using a plurality of energy subtraction images generated by the energy subtraction processing.
Dependencies are inferred from the claim text.