Abstract: A grid module of a scattered-radiation grid is disclosed. The scattered-radiation grid includes a number of grid modules disposed next to one another with a plurality of webs, especially for use in conjunction with a CT detector, a CT detector and a CT system with such a detector. In accordance with an embodiment of the invention, at the joining surfaces of the grid modules, the webs located there are provided with breakthroughs to compensate for a disproportionate reduction in scattered radiation.

Abstract: A grid module of a scattered-radiation grid is disclosed. The scattered-radiation grid includes a number of grid modules disposed next to one another with a plurality of webs, especially for use in conjunction with a CT detector, a CT detector and a CT system with such a detector. In accordance with an embodiment of the invention, at the joining surfaces of the grid modules, the webs located there, compensating for an excessive reduction in scattered radiation, are embodied lower in their height than the maximum height of the other webs to be found in the grid module.

Abstract: A method is disclosed for producing a comb-like collimator element for a collimator arrangement. In at least one embodiment of the method, a collimator sheet extending in a first direction and made of an X-ray absorbing material is used as a support, onto which webs made of an X-ray absorbing material are formed in layers by way of a rapid prototyping technique and protrude transversely in respect of the support in a second direction.

Abstract: A collimator is disclosed for a radiation detector including at least three spacing elements arranged on a radiation exit face of the collimator. In at least one embodiment, they are embodied so as to mount the collimator in a stable manner with respect to a radiation converter of the radiation detector. The at least three spacing elements enable a very precise and stable alignment of the collimator in respect of the radiation converter despite manufacturing-related curves or unevennesses in the radiation exit face and/or the mounting surface on the part of the radiation converter. At least one embodiment of the invention also relates to a manufacturing method for such a collimator, as well as a method for manufacturing a radiation detector.

Abstract: A radiation detector is disclosed, which in at least one embodiment includes a scintillator with septa for separating scintillator elements arranged alongside one another, and a collimator with webs for forming laterally enclosed radiation channels, wherein the webs are inserted into the septa in order to avoid crosstalk between adjacent scintillator elements. This effectively suppresses crosstalk by light or secondary quanta between adjacent pixels in conjunction with a simple construction and high mechanical stability with the consequence that the spatial resolution and quantum efficiency of the radiation detector can be increased. At least one embodiment additionally relates to a method for producing such a radiation detector.

Abstract: A detector module for a radiation detector is disclosed. In at least one embodiment, the detector module includes a converter layer with contacts, arranged distributed over an area on the rear side, for transmitting electrical signals, wherein the contacts are routed, by way of rewiring, to target contacts on a target region that is smaller than this area. This provides the conditions for simple and secure signal routing between the contacts on the converter layer and readout electronics. In particular, this is successful if a substrate layer used for stabilization purposes has a cutout for the target region, through which cutout the target contacts are directly connected to the signal-routing lines of readout electronics.

Abstract: A method is disclosed, in at least one embodiment, for producing a scintillator for a radiation detector, in which the scintillator is produced in layers by depositing a scintillator material using a PVD process. By using a PVD process, owing to lower process temperatures of less than 300° C., it is possible to produce scintillators with decay times of less than 1.1 ns over large surfaces. In this way, the prerequisites for quantitative and energy-selective detection of individual radiation quanta can be satisfied even with fluxes of more than 108 X-ray quanta/mm2*s. At least one embodiment of the invention also relates to a scintillator produced by such a method.

Abstract: A photodiode array for a radiation detector is disclosed, including a multiplicity of photodiodes arranged in a structured fashion, the photodiodes respectively having an active pixel region for converting light into electrical signals. In at least one embodiment, a transparent oxide layer with a refractive index comparable to the photodiodes is arranged on the active pixel region of at least some of the photodiodes on a side of the photodiode array provided for arranging a scintillator array. Compared to known photodiode arrays, the oxide layer replaces an adhesive. As a result of equalizing the refractive indices, light incident on the interface between the oxide layer and the photodiode array is refracted or reflected to a lesser extent. This reduces the optical crosstalk between adjacent pixels. Moreover, the active pixel regions of the photodiodes become optically visible as a result of the oxide layer.

Abstract: An X-ray detector for a tomography device is disclosed, including a plurality of detector elements, each including a photodiode and a scintillator fixed to the optically active surface of the photodiode by a connecting medium. In at least one embodiment, the optically active surface of the photodiode has a nanostructure, which forms a transition region having gradually progressing refractive indices between a refractive index of the connecting medium and a refractive index of the photodiode. Reflections at the optical transition of connecting medium/photodiode and also optical crosstalk to adjacent detector elements are greatly reduced in this way. Such an X-ray detector therefore has a higher luminous efficiency, with which a signal-to-noise ratio and a spatial resolution of the X-ray detector are improved. At least one embodiment of the invention additionally relates to a method for producing an X-ray detector having the properties mentioned.

Abstract: A method is disclosed for producing a 2D collimator element for a radiation detector, in which crossing webs made of a radiation-absorbing material are formed, layer-by-layer, by way of a rapid manufacturing technique. In at least one embodiment, the webs are aligned along a ?- and a z-direction and form a cell-shaped structure with laterally enclosed radiation channels, at least in the inner region of the 2D collimator element. In at least one embodiment, the invention moreover relates to a 2D collimator element for a radiation detector that has such a layered construction. This allows the provision of a very precise and rigid collimator arrangement which, at the same time, has a high collimation effect.

Abstract: A production method for a sensor unit is specified, the unit including both a scintillator and a support plate on which a stack of collimator sheets is attached. In at least one embodiment, the production method permits particularly precise positioning of the collimator sheets in respect of the scintillator. In the process, individual scintillator strips are initially produced from a plurality of scintillator pixels adjoining one another along one dimension. Respectively one photodiode strip, made of a plurality of photodiodes in turn adjoining one another along one dimension, is attached to each of the individual scintillator strips along a longitudinal side in order to form a sensor strip. In at least one embodiment, respectively one photodiode is associated with respectively one scintillator pixel for readout purposes. The sensor strips are subsequently individually assembled on an outer side of the support plate facing away from the collimator sheets in order to form the scintillator.

Abstract: A production method for a sensor unit of an X-ray detector is disclosed, which can be implemented easily and precisely, is specified, the sensor unit including a scintillator with photodiodes integrated in its septa for lateral readout. In at least one embodiment of the method, individual scintillator strips are initially produced from a plurality of scintillator pixels adjoining one another along one dimension. Respectively one photodiode strip, made of a plurality of photodiodes in turn adjoining one another along one dimension, is attached to each of the individual scintillator strips along a longitudinal side in order to form a sensor strip. Here, respectively one photodiode is associated with each scintillator pixel for readout purposes.

Abstract: A method is disclosed for producing a comb-like collimator element for a collimator arrangement. In at least one embodiment of the method, a collimator sheet extending in a first direction and made of an X-ray absorbing material is used as a support, onto which webs made of an X-ray absorbing material are formed in layers by way of a rapid prototyping technique and protrude transversely in respect of the support in a second direction.

Abstract: A radiation converter is disclosed. In at least one embodiment, the converter is for x-ray or gamma radiation and includes a multiplicity of scintillation elements which are separated from one another by separating septa. To reduce cross-talk between adjacent scintillation elements, the separating septa have a layer structure. The layer structure includes two backscatter layers, between which an absorber layer which is essentially opaque to the radiation, to scatter radiation and/or scintillation light is disposed.

Abstract: A radiation converter is disclosed. In order to improve the detection of x-ray radiation or gamma radiation, at least one embodiment of the invention provides that, in the case of the radiation converter with a plurality of converter elements for converting x-ray radiation or gamma radiation to light, in each case one light outlet window is formed on a light outlet side of the converter elements such that, on the light outlet side, the converter elements are covered in part by reflector material in a layered fashion.

Abstract: A detector module is disclosed, having an array of detector elements and a printed circuit board. The printed circuit board includes a first region for holding the array of detector elements and includes at least one second region, angled off relative to the first region. On this at least one second region, signal-processing electronics may be arranged. The vertical design of the detector module allows the design of an area detector to be produced on the basis of a multiplicity of detector modules arranged next to one another. The area detector may be provided for a computer tomograph.

Abstract: A radiation detector is disclosed for X radiation. In at least one embodiment, the detector includes a detector array that has a multiplicity of scintillators separated from one another by partition walls, and a photodiode array that is arranged on the side of said detector array averted from the radiation. In at least one embodiment, electronic subassemblies are arranged in an insensitive region of the photodiodes that is covered by the partition walls, and the partition walls include a material that has an X-ray absorptivity of more than 50%.

Abstract: A detector module for an X-ray computer tomograph includes a first transducer array for converting X-radiation into light. A second transducer array is fitted on the first transducer array such that second transducer elements of the second transducer array are fitted on a side, opposite the light entrance, of a substrate of the second transducer array.

Abstract: A method for producing an electronic assembly and an electronic assembly which has been correspondingly produced are specified. In this case, CMOS structures are formed in a semiconductor substrate to form a circuit and, after the CMOS structures have been formed, at least one electrical conductor is introduced, in a low-temperature process into an opening in the semiconductor substrate in such a manner that the electrical conductor is formed between a first side and a second side, which is opposite the first side, of the semiconductor substrate to connect the circuit. The electronic assembly allows a close arrangement of electronics and detectors and is suitable, for example, for a medical apparatus.

Abstract: A detector module is disclosed, having an array of detector elements and a printed circuit board. The printed circuit board includes a first region for holding the array of detector elements and includes at least one second region, angled off relative to the first region. On this at least one second region, signal-processing electronics may be arranged. The vertical design of the detector module allows the design of an area detector to be produced on the basis of a multiplicity of detector modules arranged next to one another. The area detector may be provided for a computer tomograph.