18results about "X-ray tube structural circuit elements" patented technology

Disclosed herein are a method of controlling a bipolar high-voltage generator and an X-ray system. The bipolar high-voltage generator is connected to a load for supplying a cathode voltage and an anode voltage to the load. The bipolar high-voltage generator includes a first transformer and a second transformer. The first transformer is provided in an output circuit of the anode voltage, and the second transformer is provided in an output circuit of the cathode voltage. The method of controlling includes: obtaining a target voltage difference of the bipolar high-voltage generator, wherein the target voltage difference is within a preset range; and adjusting a working state of at least one of the first transformer and the second transformer based on the target voltage difference. The target voltage difference is defined as a difference between an absolute value of a target anode voltage and an absolute value of a target cathode voltage output from the bipolar high-voltage generator.

In order to achieve effective cooling, an X-ray emitter with a tube housing having a vacuum is provided. At least one anode is arranged in the tube housing, such that the anode is irradiated by an electron beam generated in a cathode and accelerated through an electrical field. The anode is excited, such that an X-ray deceleration radiation is emitted. The X-ray emitter has a thermoelectric converter (e.g., at least one thermophotovoltaic cell) for generating electrical energy. The thermoelectric converter is arranged, such that the thermoelectric converter may be irradiated at least in part by a heat radiation emanating from the anode.

X-ray generation apparatus includes X-ray generation tube having insulating tube with first and second opening ends, cathode closing the first opening end and having electron emitting portion, and anode closing the second opening end; electronic component arranged in proximity to the cathode; driving circuit for driving the X-ray generation tube via the electronic component; and accommodating container accommodating the X-ray generation tube, the electronic component, and the driving circuit. The accommodating container has third opening end, and the X-ray generation tube closes the third opening end. The accommodating container defines first space storing at least part of the driving circuit, and second space protruding from the first space and storing the X-ray generation tube and the electronic component.

The invention discloses an electronic circuit and a method for providing a high tube voltage for an X-ray tube, a method for operating an X-ray tube, an X-ray tube system and a medical imaging apparatus. The invention relates to an electronic circuit for providing a high tube voltage for an X-ray tube. The electronic circuit has: a first inverter unit configured to receive an input DC voltage and convert it into a first AC voltage according to a first manipulated variable; and a second inverter unit configured to convert the input DC voltage to a second AC voltage according to a second manipulated variable. The further circuit portion is configured to generate a high tube voltage as a function of the first AC voltage and the second AC voltage. The control device is configured to determine a controlled variable and to vary the first manipulated variable (10) and / or the second manipulated variable as a function of the controlled variable, and to determine the controlled variable as a function of the first alternating current and the second alternating current and / or the first direct current and the second direct current.

Some embodiments include an x-ray source, comprising: an anode; a field emitter configured to generate an electron beam; a first grid configured to control field emission from the field emitter; a second grid disposed between the first grid and the anode; a third grid disposed between the first grid and the anode; and a middle electrode disposed between the first grid and the anode wherein the second grid is either disposed between the first grid and middle electrode or between the middle electrode and the anode; wherein the third grid is a mesh grid.

This X-ray generation device comprises an X-ray generation tube, a drive circuit, and a housing container. The X-ray generation tube includes: an insulation pipe having first and second open ends; a cathode closing the first open end of the insulation pipe and including an electron-emitting portion; and an anode closing the second open end and including a target with which electrons from the electron-emitting portion collide. The housing container has a third open end, which is closed by the X-ray generation tube. The housing container is filled with an insulating liquid. The housing container defines a first space in which the drive circuit is housed, and a second space that protrudes from the first space and in which at least a part of the X-ray generation tube is housed. The housing container includes a protruding portion surrounding the second space, one end of the second space constituting the third open end. A part of the outer surface of the insulation pipe is surrounded by an X-ray blocking member extending from the anode toward the cathode so as to block X-ray. The X-ray blocking member is covered by an insulation member.

A first inverter unit receives an input DC voltage and converts the input DC voltage into a first AC voltage based on a first manipulated variable. A second inverter unit converts the input DC voltage into a second AC voltage based on a second manipulated variable. A further circuit part generates the high tube voltage based on the first and second AC voltages. A controller determines a controlled variable, and changes the first and / or the second manipulated variable based on the controlled variable. The controlled variable is based on a first alternating current resulting from the first AC voltage and a second alternating current resulting from the second AC voltage, and / or a first direct current resulting from the input DC voltage at the first inverter unit and a second direct current resulting from the input DC voltage at the second inverter unit.

A linear accelerator in data communication with a computing device and a programmable logic controller and including a magnetron, an electron gun that is configured to direct an accelerated beam of electrons at a target thereby generating a beam of X-rays, a primary collimator positioned beyond the target in a direction of the beam of X-rays, a secondary collimator coupled to an end of the primary collimator at which the beam of X-rays exit the primary collimator, an attenuating element and a calorimeter positioned within the primary collimator, and a reference detector positioned within the secondary collimator and configured to measure an X-ray radiation dose output of the linear accelerator on a pulse-by-pulse basis.

The invention relates to an electronic circuit (1) for providing a high voltage (17) for an X-ray tube (18). The electronic circuit (1) comprises a first inverter unit (4) configured to obtain an input DC voltage (2) and convert it into a first AC voltage (8) depending on a first control variable (10), and a second inverter unit (5) configured to convert the input DC voltage (2) into a second AC voltage (9) depending on a second control variable (11). A further circuit section (3) is configured to generate the high voltage (17) for the tube depending on the first and the second AC voltages (8, 9).A control arrangement (24) is set up to determine a controlled variable (25) and to change the first manipulated variable (10) and / or the second manipulated variable (11) depending on the controlled variable (25), and to determine the controlled variable (25) depending on a first alternating current (6) and a second alternating current (7) and / or a first direct current (43) and a second direct current (44).

The invention provides an X-ray tube focus beam spot regulation and control method, an X-ray tube and medical equipment, and belongs to the technical field of X-ray tubes. The method comprises the following steps: acquiring the working parameter information of the X-ray tube at the current moment and the working parameter information of the X-ray tube at the previous moment; magnetic control current information of the previous moment is determined according to the working parameter information of the previous moment, and magnetic control current information of the current moment is determined according to the working parameter information of the current moment; determining a magnetic control current difference according to the magnetic control current information at the previous moment and the magnetic control current information at the current moment; and selecting a preset current unit according to the magnetic control current difference, and regulating and controlling the magnetic field of the next magnetic control stage according to the preset current unit so as to regulate and control the size of a focus beam spot generated by the X-ray tube. Through the method, the magnetic control current information of the next magnetic control stage can be dynamically adjusted in real time, so that the real magnetic focusing magnetic field response is matched with the change of the tube voltage or / and the tube current, and the problem of low dimensional stability of the focus beam spot is solved.

Provided are an X-ray tube device and an X-ray device with which deterioration detection and lifetime prediction of the X-ray tube device can be performed with a simple configuration. An X-ray tube device (1) is provided with: a cathode (10) having a filament (12) that emits electrons and a focusing body (14) that focuses the emitted electrons; an anode (20) that emits X-rays by incidence of electrons emitted from the filament (12); the cathode (10) and the anode (20) are packaged in the vacuum outer cover (30), and the interior of the vacuum outer cover (30) is kept vacuum; a first power source (40) that applies a tube voltage between the cathode (10) and the anode (20); a second power supply (50) that heats the filament (12) by causing a tube current to flow through the filament (12); a third power source (60) that reduces the potential of the focusing body (14) with respect to the potential of the filament (12); and a current meter (70) that detects a current caused by cations flowing through the focusing body (14), said cations being ionized inside the vacuum housing (30).

The invention provides a beam safety diagnosis device, an X-ray tube and CT equipment, the CT equipment comprises the X-ray tube, the X-ray tube comprises a cathode and a beam safety diagnosis device, the cathode is used for emitting electron beams, the beam safety diagnosis device comprises a detection structure and a controller, the detection structure comprises an electron receiving part, and the electron receiving part is used for receiving the electron beams. The electron receiving part is arranged outside a beam envelope formed by the electron beams in a surrounding manner; when the electron beam deviates from a preset track, electrons are emitted to the electron receiving part and are received by the electron receiving part, so that the voltage of the detection structure is changed, the detection structure feeds back a voltage value to the controller in real time, the controller is provided with a preset threshold value, and when the voltage change value of the detection structure is larger than the preset threshold value, the controller controls the X-ray tube to stop emitting the electron beam. Through the arrangement of the beam current safety diagnosis device, the emission of the electron beam is stopped at the beginning that the internal structure of the X-ray tube is abnormal, so that the risk that the X-ray tube is damaged can be reduced.

The present disclosure provides a cathode emission device. The cathode emission device may comprise a cathode assembly, including: a first filament, a second filament, and a grid electrode. The grid electrode may be operably connected to the first filament and surrounding the first filament and the second filament. The cathode assembly may be configured to be operably connected to a high-voltage generator and switchable between a first connection configuration and a second connection configuration.

The invention relates to an electronic circuit (1) for providing a high voltage (17) for an X-ray tube (18). The electronic circuit (1) comprises a first inverter unit (4) configured to obtain an input DC voltage (2) and convert it into a first AC voltage (8) depending on a first control variable (10), and a second inverter unit (5) configured to convert the input DC voltage (2) into a second AC voltage (9) depending on a second control variable (11). A further circuit section (3) is configured to generate the high voltage (17) for the tube depending on the first and the second AC voltages (8, 9).A control arrangement (24) is set up to determine a controlled variable (25) and to change the first manipulated variable (10) and / or the second manipulated variable (11) depending on the controlled variable (25), and to determine the controlled variable (25) depending on a first alternating current (6) and a second alternating current (7) and / or a first direct current (43) and a second direct current (44).

The invention provides an X-ray tube focus beam spot regulation and control method, an X-ray tube and medical equipment, and belongs to the technical field of X-ray tubes. The method comprises the following steps: acquiring the working parameter information of the X-ray tube at the current moment and the working parameter information of the X-ray tube at the previous moment; determining a working parameter difference according to the working parameter information at the current moment and the working parameter information at the previous moment; selecting a magnetic control current parameter according to the working parameter difference and the critical value, and adjusting the magnetic field of the next magnetic control stage according to the magnetic control current parameter so as to regulate and control the size of a focus beam spot generated by the X-ray tube; wherein the magnetic control current parameters comprise a magnetic control current slope and a magnetic control current value. Through the method provided by the invention, the magnetic control current information of the next magnetic control stage can be dynamically adjusted in real time, the stability of the focus beam spot size in the dual-energy switching process can be ensured, and the problem of low focus beam spot size stability caused by magnetic field response lag when the tube voltage or / and the tube current change in a traditional regulation and control method is solved.

Provided are a radiation tube (60) and a radiation source that have a smaller size than those in the related art. A radiation tube that is used in a radiation source for radiography includes: an electron emitting unit (72) that includes a cathode unit (90) having an emitter electrode (91) which emits electrons and a gate electrode (96); an anode unit (74) that has an anode surface (75) facing the cathode unit and collides with the electrons to generate radiation; a constant voltage supply unit (70) that supplies a constant driving voltage to the gate electrode; and a vacuum tube (76) that accommodates the constant voltage supply unit, the electron emitting unit, and the anode unit.

Disclosed herein are a method of controlling a bipolar high-voltage generator and an X-ray system. The bipolar high-voltage generator is connected to a load for supplying a cathode voltage and an anode voltage to the load. The bipolar high-voltage generator includes a first transformer and a second transformer. The first transformer is provided in an output circuit of the anode voltage, and the second transformer is provided in an output circuit of the cathode voltage. The method of controlling includes: obtaining a target voltage difference of the bipolar high-voltage generator, wherein the target voltage difference is within a preset range; and adjusting a working state of at least one of the first transformer and the second transformer based on the target voltage difference. The target voltage difference is defined as a difference between an absolute value of a target anode voltage and an absolute value of a target cathode voltage output from the bipolar high-voltage generator.

To provide an X-ray tube device and an X-ray device that have a simple structure and can detect deterioration and predict the lifespan of the X-ray tube device. [Solution] The X-ray tube apparatus 1 comprises a cathode 10 having a filament 12 that emits electrons and a focusing body 14 that focuses the emitted electrons, an anode 20 that emits X-rays when electrons emitted from the filament 12 are incident on it, a vacuum enclosure 30 that encloses the cathode 10 and the anode 20 and maintains a vacuum inside, a first power supply 40 that applies a tube voltage between the cathode 10 and the anode 20, a second power supply 50 that passes a tube current through the filament 12 and heats the filament 12, a third power supply 60 that lowers the potential of the focusing body 14 relative to the potential of the filament 12, and an ammeter 70 that detects the current caused by ionized positive ions flowing through the focusing body 14, which are positive ions ionized inside the vacuum enclosure 30.