Tsinghua University

Nuctech Company Limited

Donghai Liu

Wenhui Huang

Qun Luo

Qingxiu Jin

Chengjun Tan

Chuanxiang Tang

Dongsheng Zhang

Luming Zhang

Peidong Wu

Shuo Wang

Cheng Song

Cong Xu

Yunze Ding

An anode target, a ray light source, a computed tomography device, and an imaging method, which relate to the technical field of ray processing. The anode target comprises a first anode target, a second anode target, and a ceramic plate. The first anode target is used for enabling, by means of a first voltage carried on the first anode target, an electron beam emitted by a cathode to generate a first ray on a target spot of the first anode target. The second anode target is used for enabling, by means of a second voltage carried on the second anode target, an electron beam emitted by the cathode to generate a second tray on a target spot of the second anode. The ceramic plate is used for isolating the first anode target from the second anode target. By means of the anode target, the ray light source, the computed tomography device and the imaging method, dual-energy distributed ray imaging data can be provided and the imaging quality of a ray system can be improved.

Anode target, ray light source, computed tomography device, and imaging method

An arrayed X-ray source and an X-ray imaging apparatus are described. An example X-ray source includes a housing and X-ray generators located in the housing. The X-ray generators are arranged in an array. The X-ray generators are provided separately from each other and configured to emit X-rays independently of each other.

Arrayed X-ray source and X-ray imaging apparatus

An anode target comprises: a plurality of target structures, used for receiving an electron beam emitted by a cathode to generate a ray, the plurality of target structures being of three-dimensional structures having bevels; a copper cooling body, used for bearing the target structures and comprising an oxygen-free copper cooling body; a cooling oil tube, used for cooling the anode target; and a shielding layer, used for achieving a shielding effect and comprising a tungsten shielding layer. The anode target, the ray light source, the computed tomography scanning device, and the imaging method in the present application are able to enable all target spots on the anode target to be distributed on a straight line, imaging quality of a ray system is improved, and complexity of an imaging system is reduced.

Anode target, ray light source, computed tomography scanning device, and imaging method

A distributed X-ray light source comprises: a plurality of arranged cathode assemblies used for emitting electron beams; an anode target used for receiving the electron beams emitted by the cathode assemblies; and compensation electrodes and focusing electrodes provided in sequence between the plurality of the cathode assemblies and the anode target, the compensation electrode being used for adjusting electric field strength at two ends of a grid structure in each cathode assembly, and the focusing electrode being used for focusing the electron beams emitted by the cathode assemblies, wherein the focusing electrode corresponding to at least one cathode assembly in the plurality of the cathode assemblies comprises a first electrode and a second electrode which are separately provided, and an electron beam channel is formed between the first electrode and the second electrode.

Distributed X-ray light source and control method therefor, and CT equipment

An external grid-controlled hot cathode array electron gun, including an insulated cathode base, a filament, a plurality of hot cathode emission elements, and a grid-controlled structure is disclosed. In one aspect, the grid-controlled structure includes an insulated grid-controlled structure body and a plurality of through holes. One side of the grid-controlled structure body abuts against the cathode base to clamp the filament between the grid-controlled structure body and the cathode base and the plurality of hot cathode emission elements are inserted into the plurality of through holes respectively.

External grid-controlled hot cathode array electron gun

An electron gun, an X-ray source and a CT device are provided. The electron gun includes a body having a first end portion and a second end portion opposite to each other, wherein the first end portion is a connecting end portion; an internal cavity is formed in the body and has an opening positioned on the second end portion; a cathode, a grid, a compensation electrode and a focus electrode, orderly arranged in the internal cavity in a direction from the first end portion to the second end portion.

Electron gun and X-ray source and CT device having the electron gun

A cathode assembly, an X-ray source and a CT device are provided. The cathode assembly includes a ceramic plug having a first and second end portions. Four wiring terminals and a protruding positioning part are provided on the first end portion. An internal cavity is formed in the ceramic plug, and a cathode is provided therein. The cathode has a filament with a positive and negative electrode leads. A grid is provided on the second end portion and has a grid voltage signal line. The cathode has a cathode surface lead. The positive electrode lead, the negative electrode lead, the grid voltage signal line and the cathode surface lead are electrically connected to one of the wiring terminals, respectively. The ceramic socket has four wiring tubes which may be electrically connected with the four wiring terminals.

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Beijing, China

Donghai Liu