General Electric Company

Other

Ge Medical Systems Technology Company, LLC

William Todd Peterson

David Leo McDaniel

Chang Lyong Kim

James Lindgren Malaney

Vi-Hoa Tran

Scott David Wollenweber

Charles William Stearns

Jianjun Guo

Sergei Ivanovich Dolinsky

Gary McBroom

Anton Max Linz

Bruce David Collick

Randall Henry Buchwald

Changlyong Kim

Ashwin Ashok Wagadarikar

Michael Denzin

Sean Michael Bacon

Laura Armstrong

Methods and systems are provided for performing cathode calibration in a detector assembly. In one embodiment, a method comprises adjusting a cathode bias of a detector based on a total number of events occurring in the detector during a time period while maintaining an anode bias at a desired value, the events corresponding to photon energy detected by the detector. In this way, an automated cathode calibration procedure may be applied to calibrate the detector assembly.

Methods and systems for gain calibration of pet detectors

A multichannel application specific integrated circuit (ASIC) for interfacing with an array of photodetectors in a positron emission tomography (PET) imaging system includes a front end circuit configured to be coupled to the photodetectors and to receive discrete analog signals therefrom. The ASIC further includes a time discriminating circuit operably coupled to the front end circuit and configured to generate a hit signal based on a combination of the discrete analog signals, and an energy discriminating circuit operably coupled to the front end circuit and configured to generate a summed energy output signal based on each of the discrete analog signals and summed row and column output signals based on each of the discrete analog signals. The summed energy output signal represents an energy level of the detected radiation in the array of photodetectors, and the summed row and column output signals represent a location of the detected radiation.

Method and apparatus for interfacing with an array of photodetectors

A target object for aligning a multi-modality imaging system includes a body having a cavity therein, a first imaging source being disposed within the cavity, the first imaging source including a body having a cavity defined therein and an emission responsive material disposed within the first imaging source cavity, the first imaging source having a first shape, and a second imaging source being disposed within the cavity, the second imaging source including a body having a cavity defined therein and a magnetic resonance responsive material disposed within the second imaging source cavity, the second imaging source having a second shape that is different than the first shape. A method of aligning a multi-modality imaging system is also provided.

Method and apparatus for aligning a multi-modality imaging system

Methods and systems for signal communication in gamma ray detectors are provided. One gamma ray detector includes a scintillator block having a plurality of scintillator crystals and a plurality of light sensors coupled to the scintillator crystals and having a plurality of microcells. Each of the plurality of light sensors has a first set of signal traces connected to the microcells and a second set of signal traces connected along the first set of signal traces and together forming a signal path to a summing signal trace. Each of the plurality of light sensors also has a pin-out connected to the summing signal trace.

Methods and systems for signal communication in gamma ray detectors

A method for gain calibration of a gamma ray detector includes measuring signals generated by one or more light sensors of a gamma ray detector, generating one or more derived curves using the measured signals as a function of bias voltage and identifying a transition point in the one or more derived curves. The method also includes determining a breakdown voltage of the one or more light sensors using the identified transition point and setting a bias of the one or more light sensors based on the determined breakdown voltage.

Methods and systems for gain calibration of gamma ray detectors

A transient noise detection system includes an imaging system having a magnetic field coil and an imaging bore. The imaging system generates an imaging signal through a signal cable, wherein the imaging signal is corruptible by a noise event. A noise event detector is positioned outside of the imaging bore and proximate to the signal cable. This detector detects the noise event from the signal cable and generates a noise signal therefrom.

Method and system for improving transient noise detection

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Sussex, WI, United States of America

William Todd Peterson