Abstract: Various methods and systems are provided for a method for nuclear medicine (NM) imaging, comprising, acquiring imaging data with at least two energy windows, pre-processing acquired imaging data to separate distributions of scattered photons and peak photons, performing a main iterative reconstruction to reconstruct a corrected imaging using scatter correction, tailing correction, and/or scatter and tailing correction from distributions of scattered photons and peak photons, and outputting the corrected image.

Abstract: A single photon emission computed tomography (SPECT) imaging system includes a detector configured to receive photons emitted by a radiopharmaceutical in an examination region and convert the received photons to measured projection data and a collimator with septa spatially arranged with respect to each other and the detector to provide channels to pass photons that traverse the channels and absorb photons that impinge the septa. A first sub-set of the photons emitted by the radiopharmaceutical traverse the channels without impinging the septa and are directly received by the detector. A second sub-set of the photons emitted by the radiopharmaceutical traverse the septa and are received by the detector. The SPECT imaging system further includes a reconstructor configured to discard scatter photons and the second sub-set of photons traversing the septa, and iteratively reconstruct an image based on the first subset of photons that are directly received by the detector.

Abstract: A single photon emission computed tomography (SPECT) imaging system includes a detector configured to receive photons emitted by a radiopharmaceutical in an examination region and convert the received photons to measured projection data and a collimator with septa spatially arranged with respect to each other and the detector to provide channels to pass photons that traverse the channels and absorb photons that impinge the septa. A first sub-set of the photons emitted by the radiopharmaceutical traverse the channels without impinging the septa and are directly received by the detector. A second sub-set of the photons emitted by the radiopharmaceutical traverse the septa and are received by the detector. The SPECT imaging system further includes a reconstructor configured to discard scatter photons and the second sub-set of photons traversing the septa, and iteratively reconstruct an image based on the first subset of photons that are directly received by the detector.

Abstract: Various methods and systems are provided for a method for nuclear medicine (NM) imaging, comprising, acquiring imaging data with at least two energy windows, pre-processing acquired imaging data to separate distributions of scattered photons and peak photons, performing a main iterative reconstruction to reconstruct a corrected imaging using scatter correction, tailing correction, and/or scatter and tailing correction from distributions of scattered photons and peak photons, and outputting the corrected image.

Abstract: Various methods and systems are provided for scatter correction in nuclear medicine imaging systems. In one embodiment, a method for NM imaging comprises acquiring, with a plurality of detectors, imaging data separated into a high energy window and a low energy window, removing photopeak photons from the imaging data in the low energy window to obtain a corrected scatter distribution, correcting the imaging data based on the corrected scatter distribution, and outputting a scatter-corrected image reconstructed from the corrected imaging data. In this way, fast and accurate scatter correction for CZT-based gamma cameras may be performed, and image quality as well as quantitative accuracy may be increased.

Abstract: Various methods and systems are provided for scatter correction in nuclear medicine imaging systems. In one embodiment, a method for NM imaging comprises acquiring, with a plurality of detectors, imaging data separated into a high energy window and a low energy window, removing photopeak photons from the imaging data in the low energy window to obtain a corrected scatter distribution, correcting the imaging data based on the corrected scatter distribution, and outputting a scatter-corrected image reconstructed from the corrected imaging data. In this way, fast and accurate scatter correction for CZT-based gamma cameras may be performed, and image quality as well as quantitative accuracy may be increased.

Abstract: A method of performing conductivity-based imaging is disclosed comprising exciting at least one pair of electrodes according to an excitation scheme. The at least one pair of electrodes comprising a surface electrode located on the surface of an examined body and at least one in-body electrode located inside of the examined living body. Voltages developing on the surface electrodes and on the in-body electrodes during the excitation according to the excitation scheme arc measured, an inverse problem is solved to achieve a 3D conductivity map from the measured voltages, and a 3D image of the body tissues based on the 3D conductivity map is provided.

Abstract: A word game apparatus and method of play involving each player being represented by a set of square tiles of uniform color having various indicia imprinted thereon. Players in turn play these tiles to a game board having a grid pattern of squares. One color is declared the winner when a path of contiguous tiles of that color is formed between two end zones in accordance with the rules of the game. In some embodiments the game components are rendered using physical objects, and in other embodiments the game is implemented on computers with the game components appearing as images on electronic displays.

Abstract: A word game apparatus and method of play involving each player being represented by a set of square tiles of uniform color having various indicia imprinted thereon. Players in turn play these tiles to a game board having a grid pattern of squares. One color is declared the winner when a path of contiguous tiles of that color is formed between two end zones in accordance with the rules of the game. In some embodiments the game components are rendered using physical objects, and in other embodiments the game is implemented on computers with the game components appearing as images on electronic displays.

Abstract: Methods and systems for a medical imaging system are provided. The medical imaging system includes an input circuit configured to receive a voltage level signal indicative of a stream of pulses, a voltage level signal shape analyzer configured to determine shape characteristics of the received voltage level signal and an amount of time that the received voltage level signal matches a predetermined shape, and a counting circuit configured to determine a true number of pulses from the shape characteristics and the amount of time.

Abstract: An ultracapacitor energy storage cell pack including an ultracapacitor assembly including a plurality of ultracapacitors, each ultracapacitor including opposite ends with connection terminals protruding therefrom for directly connecting the ultracapacitors end-to-end in series; and a plurality of interconnections for mechanically and electrically interconnecting the ultracapacitors end-to-end in series without the connection terminals from adjacent ultracapacitors contacting each other, preventing mechanical stress in the connection studs.

Abstract: A method for producing a nuclear medicine image utilizing emission data in an iterative reconstruction process. The starting point for the iterative process is based on internal structure information. The internal structure information can be based on data that is different from the nuclear emission data used in the reconstruction itself, for example CT X-Ray attenuation data, Magnetic Resonance Imaging, Ultrasound Imaging or nuclear transmission data.

Abstract: A system for mounting and cooling energy storage cell canisters within a multi-cell energy storage module includes a plurality of inner interconnections to electrically connect the energy storage cell canisters end-to-end in strings of energy storage cell canisters; a plurality of bus bar interconnections to electrically connect the strings of energy storage cell canisters; and a plurality of cooling line separator inserts to position and support the plurality of inner interconnections for positioning and supporting the storage cell canisters.

Abstract: An ultracapacitor energy storage cell pack including an ultracapacitor assembly including a plurality of ultracapacitors in series; a plurality of interconnections for mechanically and electrically interconnecting the ultracapacitors; and a plurality of balancing resistors, each balancing resistor in parallel with each ultracapacitor to form a resistor divider network that automatically discharges and equalizes each ultracapacitor over time, thereby balancing the ultracapacitors of the ultracapacitor assembly, and each balancing resistor directly mechanically and electrically connected to an associated interconnection.

Abstract: Methods and systems for a medical imaging system are provided. The medical imaging system includes an input circuit configured to receive a voltage level signal indicative of a stream of pulses, a voltage level signal shape analyzer configured to determine shape characteristics of the received voltage level signal and an amount of time that the received voltage level signal matches a predetermined shape, and a counting circuit configured to determine a true number of pulses from the shape characteristics and the amount of time.

Abstract: An ultracapacitor energy storage cell pack includes an ultracapacitor assembly including a plurality of parallel ultracapacitors and balancing resistors in series; an enclosure for the ultracapacitor assembly; a controller; one or more temperature sensors; a pack voltage sensor; a GFI sensor; one or more cooling fans carried by the enclosure; an on/off relay coupled to the ultracapacitor assembly and the controller, the on/off relay activated by the controller during normal operation of the ultracapacitor assembly and deactivated by the controller when the GFI sensor detects a ground fault interrupt condition, the one or more temperature sensors detect an over-temperature condition, or the pack voltage sensor detects an over-voltage condition; and a pre-charge resistor and a pre-charge relay coupled to the ultracapacitor assembly and the controller, and activated by the controller to cause the pre-charge resistor to limit pack charge current until the ultracapacitor assembly reaches a minimum voltage.

Abstract: A system of rigid insulating insert separators for mounting energy storage cell canisters within a sealed module of multiple energy storage cell canisters to maintain the exact position of the energy storage cell canisters to eliminate stress and resistance variation at the point of contact between the bus bar interconnections and the cell terminals. The separators also have provision for mounting balancing circuit boards between the energy storage cell canisters and allowing wiring connections between the circuit boards and the bus bar interconnections.

Abstract: An ultracapacitor energy storage cell pack includes an ultracapacitor assembly having a plurality of series connected ultracapacitors and balancing resistors, each balancing resistor connected in parallel with each ultracapacitor to automatically balance each ultracapacitor over time, thereby automatically over time discharging the ultracapacitors of the ultracapacitor assembly; an enclosure to enclose and protect the ultracapacitor assembly; a controller for the ultracapacitor assembly; and one or more temperature sensors to monitor temperature of the ultracapacitor assembly and coupled to the controller.

Abstract: A method for producing a nuclear medicine image of body tissue utilizing emission data comprising:

Abstract: A method of determining linear and angular displacements of a first coordinate system of a field of view of a first imaging system relative to a second a coordinate system of a field of view of a second imaging system, the method comprising: providing a phantom having a plurality of fiducial regions that can be imaged by both imaging systems; acquiring first and second images of the phantom with the first and second imaging systems wherein spatial coordinates of features in the first and second images reference the first and second coordinate systems respectively; determining positions of a plurality of features of the fiducials in the first image and spatial coordinates of the same features in the second image; and using the coordinates to determine the linear and angular displacements.