Abstract: A method for photon counting imaging with improved high-rate counting performance includes the step of applying an instant retrigger capability with adjustable dead time in cells of the detector array and operates an apparatus using a layer of photosensitive material, an L×K array of photodetector elements arranged in the layer of the photosensitive material, an N×M array of readout unit cells, including amplifying elements and at least one readout unit cells for at least one photodetector elements. The readout unit cells are controlled by signal processing elements with each readout unit cell having internal signal processing elements to generate a discriminator output signal representing an amplified signal of the electron-hole pairs generated by an incident photon or a number of incident photons in the respective photodetector element.

Abstract: A method for photon counting imaging with improved high-rate counting performance includes the step of applying an instant retrigger capability with adjustable dead time in cells of the detector array and operates an apparatus using a layer of photo-sensitive material, an L×K array of photodetector elements arranged in the layer of the photosensitive material, an N×M array of readout unit cells, including amplifying elements and at least one readout unit cells for at least one photodetector elements. The readout unit cells are controlled by signal processing elements with each readout unit cell having internal signal processing elements to generate a discriminator output signal representing an amplified signal of the electron-hole pairs generated by an incident photon or a number of incident photons in the respective photodetector element.

Abstract: The invention is directed to increasing the time resolution capabilities of a photon counting imaging device. This is achieved by a photon-counting imaging device for single x-ray counting, including: a layer of photosensitive material; an N×M array of photodetector diodes arranged in the layer of the photosensitive material; an N×M array of readout unit cells including an high gain, low noise amplifying elements, one readout unit cell for each photodetector diode; the readout unit cells being controlled by a data processing elements; each readout unit cell comprising an internal data processing elements allowing to assign an output signal representing an amplifyied signal of the electron hole pairs generated by an incident photon or a predetermined number of incident photons in the respective photodetector diode to a preselectable region of interest; and the assignment of the output signal is accompanied by a time stamp generated by a clock means.

Abstract: The invention is directed to increasing the time resolution capabilities of a photon counting imaging device. This is achieved by a photon-counting imaging device for single x-ray counting, including: a layer of photosensitive material; an N×M array of photodetector diodes arranged in the layer of the photosensitive material; an N×M array of readout unit cells including an high gain, low noise amplifying elements, one readout unit cell for each photodetector diode; the readout unit cells being controlled by a data processing elements; each readout unit cell comprising an internal data processing elements allowing to assign an output signal representing an amplifyied signal of the electron hole pairs generated by an incident photon or a predetermined number of incident photons in the respective photodetector diode to a preselectable region of interest; and the assignment of the output signal is accompanied by a time stamp generated by a clock means.