Abstract: A radiation tube that is used in a radiation source for radiography includes: an electron emitting unit that includes a cathode unit having an emitter electrode which emits electrons and a gate electrode; an anode unit that has an anode surface facing the cathode unit and collides with the electrons to generate radiation; a constant voltage supply unit that supplies a constant driving voltage to the gate electrode; and a vacuum tube that accommodates the constant voltage supply unit, the electron emitting unit, and the anode unit.

Abstract: A radiography apparatus includes an operation controller that invalidates an operation of a collimator using a first operating unit in a case where a radiation generation unit is present vertically downward relatively to a radiography unit, and validates the operation of the collimator using the first operating unit in a case where the radiation generation unit is present vertically upward relatively to the radiography unit.

Abstract: An acquisition unit of an image processing device acquires a radiographic image which includes a patient and markers including lead plates and has been captured in a state in which the markers are disposed at a first position between a radiation source and the patient and a second position between a radiation detector and the patient, the subject being interposed between the first and second positions. An image processing unit calculates a correction magnification for setting a part of interest in the patient included in the radiographic image to a set dimension, on the basis of sizes of images of a plurality of the markers included in the radiographic image and an actual size of the markers, and changes a size of the radiographic image according to the correction magnification.

Abstract: A control device of a mammography apparatus includes an acquisition unit that acquires a radiographic image as radiography information in a case in which the radiographic image of the breast is captured and a generation condition setting unit that sets generation conditions in a case in which an ultrasound image of the breast is generated, on the basis of the radiographic image acquired by the acquisition unit. The generation condition setting unit analyzes the radiographic image to detect the amount of mammary glands in the breast and sets, as the generation conditions, an amplification factor of an ultrasound image signal and a dynamic range which is a width of a grayscale value of the ultrasound image assigned to a value of the ultrasound image signal, according to the detected amount of mammary glands.

Abstract: A radiation tube that is used in a radiation source for radiography includes: an electron emitting unit that includes a cathode unit having an emitter electrode which emits electrons and a gate electrode; an anode unit that has an anode surface facing the cathode unit and collides with the electrons to generate radiation; a constant voltage supply unit that supplies a constant driving voltage to the gate electrode; and a vacuum tube that accommodates the constant voltage supply unit, the electron emitting unit, and the anode unit.

Abstract: A radiation tube attachment member includes: a common substrate that supports one end side of each of a plurality of radiation tubes and holds the plurality of radiation tubes in a state in which the plurality of radiation tubes are arranged; and a positioning portion that is provided in the common substrate and locates a focus of each of the plurality of radiation tubes at which radiation is emitted at a target position.

Abstract: A control device includes a detection unit, a determination unit, a generation unit, and a control unit. The detection unit detects a state of each of the plurality of radiation tubes in a case in which tomosynthesis imaging that continuously irradiates an object with radiation at a plurality of different irradiation angles in order to generate a tomographic image in any tomographic plane of the object is performed using the plurality of radiation tubes. The determination unit determines whether or not to permit the generation of the tomographic image on the basis of the detection result of the detection unit and outputs a determination result. The generation unit generates the tomographic image. The control unit controls the operation of the generation unit on the basis of the determination result.

Abstract: A radiography apparatus includes a radiation generation unit that has a plurality of radiation sources generating radiation toward a subject, a C-arm that supports the radiation generation unit in a first end portion as one end, a radiography unit that is provided in a second end portion as the other end of the C-arm to face the radiation generation unit and images the subject using radiation, an imaging direction designation unit that designates an imaging direction of the subject, and a radiation source selection unit that selects the radiation source for use in imaging among the plurality of radiation sources using the designation of the imaging direction.

Abstract: A mammography apparatus includes a radiation source having a plurality of radiation tubes. The plurality of radiation tubes are disposed at a plurality of positions where the radiation is emitted to an imaging surface of a radiation detector at different irradiation angles. A correction unit corrects irradiation conditions of the radiation using a first coefficient such that the arrival dose of the radiation reaching the radiation detector is the same regardless of the irradiation angle. The first coefficient corresponds to a compression thickness of the object, indicates a rate of change in an arrival dose of the radiation depending on the irradiation angle, and is registered for each of the plurality of radiation tubes. The setting unit sets the irradiation conditions corrected by the correction unit in the radiation source.

Abstract: A radiation source of a mammography apparatus includes plural first radiation tubes and one second radiation tube. The first radiation tubes are used for tomosynthesis imaging. In contrast, the second radiation tube is used for pre-imaging which is performed before the tomosynthesis imaging in order to set the irradiation conditions of radiation in the tomosynthesis imaging. The first radiation tubes are provided at plural positions where the focuses of the radiation are set so as to be arranged in a linear shape or an arc shape at equal intervals. The second radiation tube is provided at a position that is offset from the plural positions where the first radiation tubes are provided to a rear side which is a side opposite to the irradiation side of the radiation.

Abstract: A pre-imaging control unit of a mammography apparatus selects one pre-imaging focus from plural focuses of a radiation source according to selection conditions which are preset in order to prevent the concentration of load on one of the focuses. Pre-imaging for setting the irradiation conditions of radiation in tomosynthesis imaging is performed using the selected pre-imaging focus. For example, the selection conditions indicate that the pre-imaging focus is changed in each pre-imaging operation and the focus of a radiation tube adjacent to the radiation tube whose focus has been used in the previous pre-imaging is selected as the pre-imaging focus.

Abstract: An X-ray tube includes: a cathode assembly that emits electrons; an anode that receives the electrons and generates X-rays; an envelope that is a case having the cathode assembly and the anode accommodated therein; a first shielding portion that shields the X-rays between the envelope and the cathode assembly on a reference line that connects a center of a point where the electrons are generated and a center of a point where the X-rays are generated; and a second shielding portion that shields the X-rays between the envelope and the cathode assembly in a direction perpendicular to the reference line from the center of the electron generation point.

Abstract: A radiography apparatus includes a drive circuit that drives a radiation source, an internal power supply that makes a current flow to the drive circuit at a first voltage, an external power supply that makes a current flow to the drive circuit at a second voltage different from the first voltage, a power feed controller that performs power feed to the drive circuit using at least one of the internal power supply or the external power supply, and a radiation output restriction unit that controls an output of radiation by a power supply to be used in the power feed to the drive circuit by the power feed controller.

Abstract: A radiography apparatus includes an operation controller that invalidates an operation of a collimator using a first operating unit in a case where a radiation generation unit is present vertically downward relatively to a radiography unit, and validates the operation of the collimator using the first operating unit in a case where the radiation generation unit is present vertically upward relatively to the radiography unit.

Abstract: A radiographic imaging apparatus in which a radiation source support unit supports a radiation source is adapted to be capable of being quickly carried to a use position in a small radius. A radiographic imaging apparatus includes a leg unit that includes three or more wheel units and is capable of traveling on an apparatus-placement surface by using wheels, a body unit that is held on the leg unit, an arm unit as a radiation source support unit that is connected to the body unit, a radiation source that is mounted on the arm unit, a battery that is received in the body unit and drives the radiation source, and a circuit that is received in the body unit and relates to the drive of the radiation source. The wheel unit is formed of a revolving caster.

Abstract: A tomosynthesis imaging apparatus includes: a radiation detector having an imaging surface that detects radiation transmitted through an object and captures a projection image of the object; a radiation source that has a plurality of radiation tubes which emit the radiation to the imaging surface at different irradiation angles and selectively irradiates the object with the radiation from each of the plurality of radiation tubes; and a radiation source control unit that performs focal position control for switching between positions of focuses where the radiation is emitted for at least one of the plurality of radiation tubes to change the radiation irradiation angle of the radiation tube with respect to the imaging surface.

Abstract: A tomosynthesis imaging apparatus includes: a radiation detector having an imaging surface that detects radiation transmitted through an object and captures a projection image of the object; a radiation source that has a plurality of radiation tubes which emit the radiation to the imaging surface at different irradiation angles and selectively irradiates the object with the radiation from each of the plurality of radiation tubes; and a radiation source control unit that performs movement control for moving at least one of the plurality of radiation tubes to change the radiation irradiation angle of the radiation tube with respect to the imaging surface.

Abstract: A radiography apparatus includes: a radiation detector having an imaging surface that detects radiation transmitted through an object and captures a projection image of the object; and a radiation source that has a plurality of radiation tubes which emit the radiation to the imaging surface at different irradiation angles and includes a plurality of units in which the plurality of radiation tubes are divided and accommodated.

Abstract: A radiation emitting device includes a radiation source unit that irradiates a subject with radiation, a camera that captures an image of the subject to acquire a captured image of the subject, and a monitor that displays the captured image. A control device controls at least one of the inclination or the rotation angle of the monitor on the basis of at least one of the direction of the radiation source unit, the inclination of a radiation detector, and the rotation angle of the radiation detector, or the display content of the monitor.

Abstract: An X-ray tube includes: an envelope that is a case; a cathode assembly that emits electrons in the envelope; and an anode including a first member of which at least a portion extends to the outside of the envelope, a second member that is provided in a direction perpendicular to a central axis of the first member, comes into contact with the first member, and has a higher X-ray shielding performance than the first member, and a target that receives the electrons emitted from the cathode assembly and generates X-rays.