Abstract: A method for extracting photon depth-of-interaction of an incident photon in a crystal with a reflective coating optically coupled to all sides of the crystal, except for an opening, wherein a photodetector is optically coupled to the opening. A pulse shape of a photodetector output as a result of detection of scintillation photons from the crystal generated by the incident photon is measured, wherein the reflective coating optically coupled to all sides of the crystal, except for an opening optically coupled to the photodetector reflects the scintillation photons passing to all sides of the crystal, except for the opening optically coupled to the photodetector. The pulse shape is used to determine photon depth-of-interaction within the crystal.

Abstract: A detector is provided. A plurality of scintillation crystals is provided, where each scintillation crystal has a width, and wherein a first plurality of scintillation crystals is placed adjacent to each other so that first surfaces of the first plurality of scintillation crystals form a first rectangular surface. A reflective coating is formed over the first rectangular surface with an open region grid pattern, wherein each open region forms a space wherein each space has a width equal to the width of a scintillation crystal of the plurality of crystals. A plurality of photodetectors is provided, wherein each photodetector is placed over a space, wherein the photodetector has a width greater than the width of the space over which the photodetector is placed. At least one electronic readout is electrically connected to the plurality of photodetectors.

Abstract: An integrated circuit in a PET imaging system with a plurality of photo detectors is provided. A plurality of differential transimpedance amplifiers with differential inputs and differential outputs is provided, wherein differential inputs for each differential transimpedance amplifier of the plurality of differential transimpedance amplifiers are electrically connected to a photodetector.

Abstract: A method for providing an image from a device with a plurality of sensors and a plurality of time to digital converters (TDC) is provided. Data signals are generated by some of the plurality of sensors, wherein each sensor of the plurality of sensors provides output in parallel to more than one TDC of the plurality of TDCs and wherein each TDC of the plurality of TDCs receives in parallel input from more than one sensor of the plurality of sensors and where a binary matrix indicates which sensors are connected to which TDC. The data signals are transmitted from the sensors to the TDCs. TDC signals are generated from the data signals. Group testing is used to decode the TDC signals based on the binary matrix.

Abstract: Embodiments of the invention provide a high energy photon detector. A first scintillation crystal is provided. A first plurality of photosensors is on a first face of the first scintillation crystal, wherein the first plurality is at least two. A second scintillation crystal is provided. A second plurality of photosensors is on a first face of the second scintillation crystal, wherein the second plurality is at least two. An optical coupling interface is between a second face of the first scintillation crystal and a second face of the second scintillation crystal, wherein the optical coupling interface provides an optical transmission between the first scintillation crystal and the second scintillation crystal, so that the distribution of scintillation light created in one crystal is allowed to spread into the second crystal.

Abstract: A method for extracting photon depth of interaction information in a positron emission tomography system is provided. A pulse is detected in a photodetector. A height of the pulse is measured. A determination of whether the pulse height is within a set range is made. Photon depth of interaction is extracted from the pulse height. An energy of interaction is calculated from the pulse height and calibration data. The extracted photon depth and calculated energy spectrum are used in image reconstruction.

Abstract: An integrated circuit in a PET imaging system with a plurality of photo detectors is provided. A plurality of differential transimpedance amplifiers with differential inputs and differential outputs is provided, wherein differential inputs for each differential transimpedance amplifier of the plurality of differential transimpedance amplifiers are electrically connected to a photodetector.

Abstract: A method for extracting photon depth-of-interaction of an incident photon in a crystal with a reflective coating optically coupled to all sides of the crystal, except for an opening, wherein a photodetector is optically coupled to the opening. A pulse shape of a photodetector output as a result of detection of scintillation photons from the crystal generated by the incident photon is measured, wherein the reflective coating optically coupled to all sides of the crystal, except for an opening optically coupled to the photodetector reflects the scintillation photons passing to all sides of the crystal, except for the opening optically coupled to the photodetector. The pulse shape is used to determine photon depth-of-interaction within the crystal.

Abstract: A detector is provided. A plurality of scintillation crystals is provided, where each scintillation crystal has a width, and wherein a first plurality of scintillation crystals is placed adjacent to each other so that first surfaces of the first plurality of scintillation crystals form a first rectangular surface. A reflective coating is formed over the first rectangular surface with an open region grid pattern, wherein each open region forms a space wherein each space has a width equal to the width of a scintillation crystal of the plurality of crystals. A plurality of photodetectors is provided, wherein each photodetector is placed over a space, wherein the photodetector has a width greater than the width of the space over which the photodetector is placed. At least one electronic readout is electrically connected to the plurality of photodetectors.

Abstract: A method for providing an image from a device with a plurality of sensors and a plurality of time to digital converters (TDC) is provided. Data signals are generated by some of the plurality of sensors, wherein each sensor of the plurality of sensors provides output in parallel to more than one TDC of the plurality of TDCs and wherein each TDC of the plurality of TDCs receives in parallel input from more than one sensor of the plurality of sensors and where a binary matrix indicates which sensors are connected to which TDC. The data signals are transmitted from the sensors to the TDCs. TDC signals are generated from the data signals. Group testing is used to decode the TDC signals based on the binary matrix.

Abstract: A method for extracting photon depth of interaction information in a positron emission tomography system is provided. A pulse is detected in a photodetector. A height of the pulse is measured. A determination of whether the pulse height is within a set range is made. Photon depth of interaction is extracted from the pulse height. An energy of interaction is calculated from the pulse height and calibration data. The extracted photon depth and calculated energy spectrum are used in image reconstruction.