Abstract: One or more example embodiments relates to an imaging system comprising an imaging device including, a capturing apparatus configured to capture and forward measurement data, the capturing apparatus including at least one capturing module configured to capture partial data, each partial data being part of entire measurement data, the imaging device is configured to create groups of partial data with the at least one capturing module, each of the groups comprises partial data from at least one of the at least one capturing module, and at least one output interface; and at least one addressing algorithm configured, based on information about a structure of data processing hardware with a plurality of target memory areas, to associate each of the groups with a target address relating to one of the target memory areas in the data processing hardware.

Abstract: One or more example embodiments relates to an X-ray detection system comprising a detector unit configured to generate an input signal based on detected X-ray photons and a signal processing device configured to process the input signal, wherein the signal processing device includes an input circuit configured to receive the input signal, a signal processor configured to generate an output signal from the input signal, and a processing circuitry configured to determine a statistical value of the output signal, compare the statistical value with a pregiven setpoint value, and influence the input signal such that a difference between the statistical value and the setpoint value in the output signal is reduced.

Abstract: An electronic circuit for capturing coincidence events includes a detector pixel array, the circuit including a first capturing unit which is configured to provide a first impingement event signal. For each further detector pixel of at least one further detector pixel of the detector pixel array, the electronic circuit includes a further capturing unit configured to provide a further impingement event signal. The electronic circuit includes a logic circuit which compares the first impingement event signal with the at least one further impingement event signal and provides a coincidence signal based on a result of the comparison. A coincidence counter of the electronic circuit increments a coincidence count of the coincidence counter based on the coincidence signal. For each further detector pixel of the at least one further detector pixel, the electronic circuit includes a switching unit configured to disconnect the respective further impingement event signal.

Abstract: Each pixel element of a plurality of pixel elements has a number of comparators including a first subset of comparators and a second subset of comparators. Each of the second subset of comparators has a threshold value that differs from threshold values of the first subset of comparators. Each pixel element is configured to form at least one count signal based upon the output signal from at least one of the comparators of the first subset. At least a subset of the plurality of pixel elements is configured to form one or more coincidence count signals, wherein at least one coincidence count signal is formed based upon the output signal from at least one of the second subset of comparators of the one pixel element and/or of the at least one further pixel element.

Abstract: In a first signal processing stage of a photon-counting x-ray detector, each pixel element has a comparator and a monoflop unit with a delay unit. The comparator is configured to compare an electrical signal with a signal threshold value and provide a digital pixel signal to the monoflop unit. The monoflop unit is configured to provide a pulse signal with a defined pulse length based on the digital pixel signal. In a second signal processing stage, an output of the first signal processing stage is coupled, for signaling purposes, to a delay unit, which is configured to delay the pulse signal to obtain an adjusted pulse signal. A counting element is configured to count a counting signal based on the adjusted pulse signal.

Abstract: In order to compress data from a system for CT, which has an X-ray detector containing a detector pixel array, a first training dataset is obtained, which contains a pixel value for each of a first multiplicity of detector pixels of the detector pixel array, which pixel value relates to an intensity of X-ray radiation incident on the detector pixel concerned. The first dataset is compressed by applying a first compression module to first input data, which contains the first dataset. The first compression module is comprised by a trained first machine learning model, MLM, which is trained to compress input data via the first compression module, and to reconstruct at least some of the input data based on the compressed input data via a first decompression module of the first MLM.

Abstract: A method for estimating a rate of randomly-occurring coincidences in a counting X-ray detector having a number of detector elements, the method comprising acquiring X-ray signals by the X-ray detector and converting the X-ray signals into electrical signals at the detector elements; passing on at least some of the electrical signals to signal inputs of a coincidence unit; counting coincidences of the signals passed on into the coincidence unit to determine at least one counting rate of acquired randomly-occurring coincidences; and estimating a rate of randomly-occurring coincidences based on the at least one determined counting rate.

Abstract: A photon-counting X-ray detector is for acquiring an X-ray image data set of an object penetrated by X-ray radiation. The detector includes a converter element, designed to convert incident X-ray radiation into an electrical signal; and a matrix with a plurality of pixel elements. At least a partial number of the plurality of pixel elements receive a signal input and at least one configurable counter is coupled to the at least a partial number of the plurality of pixel elements, for signaling. Further, the at least one configurable counter is designed to count either a pixel count signal, based on a signal directly received in each respective pixel element, or a coincidence count signal, based on the signal received directly in the respective pixel element and on a coincident signal of at least one further pixel element.

Abstract: A method is for generating an X-ray image dataset via an X-ray detector having a converter element and a multiplicity of pixel elements. In an embodiment, the method includes first counting of at least one quantity of count signals dependent upon the incident X-ray radiation in each pixel element of the multiplicity of pixel elements; second counting of at least one quantity of coincidence count signals in each pixel element of the subset of pixel elements with at least one further pixel element of the multiplicity of pixel elements; and generating an X-ray image dataset based upon the at least one quantity of count signals counted in each pixel element of the multiplicity of pixel elements and upon the at least one quantity of coincidence count signals counted in each pixel element of the subset of pixel elements.

Abstract: A photon-counting X-ray detector includes a converter element constructed to convert incident X-rays into electrical signals in dependence on a deposition of energy in the converter element, and an evaluation device. The evaluation device includes a pulse-generator to generate and output an electrical pulse based upon an electrical signal fed from the converter element; a differentiator to generate a differentiated signal of the electrical pulse output by the pulse-generator; and a first comparator to compare the generated differentiated signal with a first threshold value and, based upon the comparison, to output a binary output signal for a period for which the threshold value is exceeded.

Abstract: An X-ray detector includes a converter element for converting X-rays into electric signals; and a plurality of pixel elements. In an embodiment, each pixel element includes a first signal processing stage for processing respective electric signals with at least one signal amplifier and at least one comparator for providing a digital pixel signal. The signal outputs of the first signal processing stage of at least one group of pixel elements are coupled via signal technology to a common second signal processing stage including a multiplicity of digital logic elements. The common second signal processing stage includes a configurable switching matrix for interconnecting at least one partial number of the multiplicity of digital logic elements with the respective signal outputs of the first signal processing stage, so that, following a configuration of the switching matrix, a processing chain can be provided for the digital processing of the digital pixel signals.

Abstract: A method is for generating an X-ray image dataset via an X-ray detector having a converter element and a multiplicity of pixel elements. In an embodiment, the method includes first counting of at least one quantity of count signals dependent upon the incident X-ray radiation in each pixel element of the multiplicity of pixel elements; second counting of at least one quantity of coincidence count signals in each pixel element of the subset of pixel elements with at least one further pixel element of the multiplicity of pixel elements; and generating an X-ray image dataset based upon the at least one quantity of count signals counted in each pixel element of the multiplicity of pixel elements and upon the at least one quantity of coincidence count signals counted in each pixel element of the subset of pixel elements.

Abstract: A photon-counting X-ray detector includes a converter element constructed to convert incident X-rays into electrical signals in dependence on a deposition of energy in the converter element, and an evaluation device. The evaluation device includes a pulse-generator to generate and output an electrical pulse based upon an electrical signal fed from the converter element; a differentiator to generate a differentiated signal of the electrical pulse output by the pulse-generator; and a first comparator to compare the generated differentiated signal with a first threshold value and, based upon the comparison, to output a binary output signal for a period for which the threshold value is exceeded.

Abstract: A photon-counting X-ray detector is for acquiring an X-ray image data set of an object penetrated by X-ray radiation. The detector includes a converter element, designed to convert incident X-ray radiation into an electrical signal; and a matrix with a plurality of pixel elements. At least a partial number of the plurality of pixel elements receive a signal input and at least one configurable counter is coupled to the at least a partial number of the plurality of pixel elements, for signaling. Further, the at least one configurable counter is designed to count either a pixel count signal, based on a signal directly received in each respective pixel element, or a coincidence count signal, based on the signal received directly in the respective pixel element and on a coincident signal of at least one further pixel element.

Abstract: An X-ray detector includes a converter element for converting X-rays into electric signals; and a plurality of pixel elements. In an embodiment, each pixel element includes a first signal processing stage for processing respective electric signals with at least one signal amplifier and at least one comparator for providing a digital pixel signal. The signal outputs of the first signal processing stage of at least one group of pixel elements are coupled via signal technology to a common second signal processing stage including a multiplicity of digital logic elements. The common second signal processing stage includes a configurable switching matrix for interconnecting at least one partial number of the multiplicity of digital logic elements with the respective signal outputs of the first signal processing stage, so that, following a configuration of the switching matrix, a processing chain can be provided for the digital processing of the digital pixel signals.

Abstract: A method is for generating an X-ray image dataset via an X-ray detector having a converter element and a multiplicity of pixel elements. In an embodiment, the method includes first counting of at least one quantity of count signals dependent upon the incident X-ray radiation in each pixel element of the multiplicity of pixel elements; second counting of at least one quantity of coincidence count signals in each pixel element of the subset of pixel elements with at least one further pixel element of the multiplicity of pixel elements; and generating an X-ray image dataset based upon the at least one quantity of count signals counted in each pixel element of the multiplicity of pixel elements and upon the at least one quantity of coincidence count signals counted in each pixel element of the subset of pixel elements.

Abstract: A method and an X-ray detector are for correcting a spatially resolved photon scan of the X-ray detector. In an embodiment, the X-ray detector includes processing circuitry configured to: generate, from an incident X-ray photon, a signal contribution in a first electrical signal in a spatially resolved manner, a reference value being defined by an absence of X-ray photons; resolve, in relation to the reference value, positive signal contributions of the first electrical signal and negative signal contributions of the first electrical signal; and provide the positive signal contributions resolved and the negative signal contributions resolved for further processing.

Abstract: An X-ray detector includes a stack arrangement with a scattered radiation grid and a planar converter element including a first surface and a second surface. The converter element includes a first electrode embodied on the first surface and a pixelated second electrode with two adjacent first electrode elements. The two adjacent first electrode elements include a first width and a first length and the two adjacent first electrode elements are embodied the second surface opposite the first surface. The scattered radiation grid includes a grid wall with a thickness along the boundary between the two adjacent first electrode elements. The grid wall is arranged to be substantially perpendicular on the first surface and, in a projection, substantially parallel to the direction of incidence of the radiation and to the surface normal of the first surface. The grid wall at least partially overlaps the two adjacent first electrode elements.

Abstract: An X-ray detector includes an N-channel digital-analogue converter controllable with K+L bits. In an embodiment, the digital-analogue converter includes a first voltage source to provide a plurality of first voltage values at tapping points; and a switch unit with N switch matrices, 2K inputs of the switch matrices being electrically conductively connected to 2K tapping points of the first voltage source. The digital-analogue converter also includes a second voltage source including N subunits. The X-ray detector further includes a discriminator unit including N comparators, at least one input of the comparators being electrically conductively connected to the associated output of the switch matrix and/or to the associated output of the subunit, so that the associated first voltage value and the associated second voltage value are associable with each comparator. A signal of an output of a pre-amplifier, and the associated first and second voltage values are comparable in the comparator.

Abstract: A method and an X-ray detector are for correcting a spatially resolved photon scan of the X-ray detector. In an embodiment, the X-ray detector includes processing circuitry configured to: generate, from an incident X-ray photon, a signal contribution in a first electrical signal in a spatially resolved manner, a reference value being defined by an absence of X-ray photons; resolve, in relation to the reference value, positive signal contributions of the first electrical signal and negative signal contributions of the first electrical signal; and provide the positive signal contributions resolved and the negative signal contributions resolved for further processing.