General Electric Company

Shankar Visranathan Guru

Emad Andarawis Andarawis

Ahmad Nadeem Ishaque

Paul Andrew Frank

Douglas Ray Powell

An apparatus and method used to calibrate a gamma camera include an energy source and intensity selector and an energy weighting device. The energy source provides an energy output, such as an electrical current. The intensity selector is connected to the energy source and adjusts the energy output to a predetermined energy level that corresponds to an intensity of a predetermined radioactive source. The energy weighting device is also connected to the energy source and gamma camera, and the spatial compensator creates calibration signals from the energy output of the energy source. The calibration signals are supplied to the gamma camera and used during calibration of the gamma camera in lieu of energy signals produced by the gamma camera in response to a radioactive source.

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Clifton Park, NY, United States of America

Shankar Visranathan Guru