Abstract:
A method and an apparatus for locally applying material to the surface of an anode of an X-ray source as well as a corresponding anode is presented. Anode material such as a repair material for filling a recess (121) in an X-ray emitting surface (115) is applied to the X-ray emitting surface of an anode (101). The location where such material is to be applied may be detected using a laser beam (133). The applied repair material including particles (41) of anode material such as tungsten, rhenium or molybdenum, is subsequently locally sintered using a high-energy laser beam (151). The sintered material may then be melted using a high-energy electron beam (163). Using such method, a damaged surface of an anode may be locally repaired. Alternatively, structures of different anode materials or of protrusions having different levels can be provided on the X-ray emitting surface (115) in order to selectively manipulate the X-ray emitting characteristics of the anode (101).
Abstract:
A data processing device, comprising a plurality of emitter antennas (140) arranged on a movable data acquisition device and adapted to emit electromagnetic radiation including data acquired by the movable data acquisition device, a plurality of receiver antennas (150) each adapted to receive the electromagnetic radiation emitted by each of the plurality of emitter antennas (140), and a data processing unit (118) coupled to the plurality of receiver antennas (150) and adapted to extract the data acquired by the movable data acquisition device from the electromagnetic radiation received by the plurality of receiver antennas (150).
Abstract:
The invention relates to an Anti-Scatter-Grid (ASG) with lamellae (2) that absorb incident radiation (1, 8) and that produce an electrical signal proportional to the amount of absorbed radiation. The lamellae (2) may particularly consist of a semiconductor material in which photons produce electron-hole pairs that can be detected with the help of electrodes (3, 4, 6) on the sidewalls of the lamellae (2). The amount of absorbed scattered (8) or primary (1) radiation may thus be determined in a spatially resolved way, allowing to correct the image generated by an array (5) of sensor units (9).
Abstract:
The invention relates to an assembly comprising a head and/or neck support to support a head and/or neck of a user when the user is resting or sleeping, wherein the assembly comprises a system to actively reduce acoustic noise, the system being provided with at least one sound detector (10) to detect noise, and at least one anti- sound emitter (20) to emit anti- sound to reduce noise detected by the sound detector (10), wherein the head and/or neck support (30) comprises the at least one anti-sound emitter (20). The invention also relates to a method to support the head and/or neck of a user.
Abstract:
The invention relates to an X-ray detector with an array of pixels (10) that are composed of a scintillation layer (11), a coupling layer (12), and a sensitive layer (13). The coupling layer (12) comprises light guiding units (17) and shielding units (16), wherein the shielding units (16) are disposed above electronic processing circuits (15a, 15b) that are susceptible to disturbances by X-radiation. In an alternative embodiment, the coupling layer comprises a material like lead-glass that is transparent for light and absorbing for X-radiation. Preferably a wavelength- shifting material incorporated into the coupling layer (12) shifts the wavelength (? 1 ) of the photons generated in the scintillation layer (11) to values (? 2 ) at which the sensitive layer (13) has a higher sensitivity.
Abstract:
The invention relates to a device for the detection and/or transmission of radiation, particularly an X-ray detector 1, that consists of a carrier 10 on which an array of detector modules 20 is arranged. The carrier 10 comprises holes 11 through which a ball at the backside of the detector modules 20 can be inserted in order to fix the modules such that they can still rotate to a certain degree. Due to this freedom, the sensor modules 20 can align themselves during assembly.
Abstract:
The invention relates to an arrangement for collimating electromagnetic radiation, comprising a macrocollimator which has at least two cutouts, and microcollimator structures which are positioned in the cutouts of the macrocollimator and have lamellae that absorb electromagnetic radiation, so that collimator channels are formed which in each case extend such that they are transparent in a transmission direction.
Abstract:
Provided is a connector for establishing an electrical connection with a conductive tape. The conductive tape comprises at least a first conducting layer and an insulating layer. The connector comprises a first conductive region and a first connection region. The first connection region is adapted to establish an electrical connection between the first conducting layer of the conducting tape and the first conductive region when a perturbation is applied. The perturbation may be the application of pressure or temperature to the connector.
Abstract:
A power supply for generating a high output voltage for supplying an X-ray generator system with at least one X-ray source (17), especially for computer tomography (CT) applications is diclosed, wherein the high output voltage comprises at least two different high output voltage levels (U 1 ; U 1 ± U 2 ) which are fast switchable so that spectral CT measurements can be conducted with one conventional X-ray tube (17). Furthermore, an X-ray tube generator system comprising such a power supply and at least one X-ray tube (17), as well as a computer tomography (CT) apparatus comprising such a power supply is disclosed.
Abstract translation:用于产生用于向X射线发生器系统供应至少一个X射线源(17)的高输出电压的电源,特别是用于计算机断层摄影(CT)应用的电源被封闭,其中高输出电压包括至少两个不同的 可以快速切换的高输出电压电平(U 1> U 1
Abstract:
The present invention relates to a detector, in which detector modules are two-dimensionally arranged. The problem of the two-dimensional arrangement of detector modules is solved by a base structure (1) with guide elements (2) on which the detector modules (3) with at least one respective guide structure (4), are positioned relative to at least one of the respective guide elements, the guide elements (2) extending in a first direction (R1), at least two of the detector modules (3) being positioned consecutively on one of the guide elements (2) in the first direction (R1), and there are guide elements (2) that are separated from one another in a second direction (R2).