Abstract: An auxiliary device attachable to a mammography machine having an X-ray source and an X-ray receptor having a receptor area. The auxiliary device includes a housing having a length, width, and thickness, wherein the length and width of the housing are adapted to a length and width of the receptor area. The auxiliary device further includes one or more attachments for attaching the auxiliary device to the mammography machine, and a detector inside the housing. The detector includes a slab of semiconductor material, an electrode on a first side of the slab, and a pixelated electrode detector on the second side of the slab, and a read-out circuit bonded to the pixelated electrode detector, and the read-out circuit being configured for spectral photon counting with two or more energy bins. Methods for medical imaging are also provided.

Abstract: An auxiliary device attachable to a mammography machine having an X-ray source and an X-ray receptor having a receptor area. The auxiliary device includes a housing having a length, width, and thickness, wherein the length and width of the housing are adapted to a length and width of the receptor area. The auxiliary device further includes one or more attachments for attaching the auxiliary device to the mammography machine, and a detector inside the housing. The detector includes a slab of semiconductor material, an electrode on a first side of the slab, and a pixelated electrode detector on the second side of the slab, and a read-out circuit bonded to the pixelated electrode detector, and the read-out circuit being configured for spectral photon counting with two or more energy bins. Methods for medical imaging are also provided.

Abstract: Examples of systems and methods for monitoring metabolic activity and detectors for detecting photons are disclosed. The methods can include detection in a front and a rear detector of a photon to determine a Compton cone. This Compton cone may be combined with further Compton cone, or Line of Response calculation to determine an origin of nuclear decay. In examples of the systems and methods, substantially real-time visualization of nuclear decay can be achieved.

Abstract: According to one embodiment a visual prosthesis is provided that includes an integrated circuit having a plurality of pixels and an array of electrodes connected to the pixels and configured to excite neurons in a retina. The prosthesis also includes one or more photovoltaic cells and a photodetector. The integrated circuit is configured to process signals from the photodetector to selectively activate the pixels. The present disclosure further relates to artificial vision systems including such prostheses and methods for inserting the prostheses.

Abstract: A method for photon counting for pixels in a pixelated detector is disclosed, wherein for each of the pixels, one or more neighbouring pixels are defined. The method comprises receiving a charge in one or more of the pixels and comparing for each of the pixels the charge with a trigger threshold. If the charge in a pixel is above the trigger threshold, the charge is registered in the pixel after a registration delay, wherein the registration delay is dependent on the level of the charge received in the pixel in such a way that a registration delay decreases with increasing charge. A counter for a pixel is incremented when the charge is registered and an increment of a counter of the neighbouring pixels is inhibited. Pixelated semiconductor detectors are also disclosed.

Abstract: Examples of systems and methods for monitoring metabolic activity and detectors for detecting photons are disclosed. The methods can include detection in a front and a rear detector of a photon to determine a Compton cone. This Compton cone may be combined with further Compton cone, or Line of Response calculation to determine an origin of nuclear decay. In examples of the systems and methods, substantially real-time visualization of nuclear decay can be achieved.

Abstract: A method for photon counting for pixels in a pixelated detector is disclosed, wherein for each of the pixels, one or more neighbouring pixels are defined. The method comprises receiving a charge in one or more of the pixels and comparing for each of the pixels the charge with a trigger threshold. If the charge in a pixel is above the trigger threshold, the charge is registered in the pixel after a registration delay, wherein the registration delay is dependent on the level of the charge received in the pixel in such a way that a registration delay decreases with increasing charge. A counter for a pixel is incremented when the charge is registered and an increment of a counter of the neighbouring pixels is inhibited. Pixelated semiconductor detectors are also disclosed.

Abstract: A device (10) for detecting highly energetic photons, comprising one or more pixelated solid-state detectors (11) for detecting the highly energetic photons; means for providing a high voltage for polarizing said solid-state detectors; one or more pixelated readout elements (30), a readout element being connected to each of said one or more pixelated solid-state detectors (11); an input/output element (12) connected to said readout elements (30) for data input and output; and a base layer (13) for mounting the pixelated solid-state detectors (11), the readout elements (30) and the input/output element (12).

Abstract: A device (10) for detecting highly energetic photons, comprising one or more pixelated solid-state detectors (11) for detecting the highly energetic photons; means for providing a high voltage for polarizing said solid-state detectors; one or more pixelated readout elements (30), a readout element being connected to each of said one or more pixelated solid-state detectors (11); an input/output element (12) connected to said readout elements (30) for data input and output; and a base layer (13) for mounting the pixelated solid-state detectors (11), the readout elements (30) and the input/output element (12).