Calibration method and apparatus for pixilated solid state detector

A system calibrates a solid state detector for a radiation imaging device in a single acquisition. A calibration phantom emits radiation concurrently at at least first and second characteristic energy levels. A nuclear camera generates associated sets of radiation data spanning both the first and second energy levels from the emitted radiation that is received by solid state detector. A means determines associated centers of energy peaks and energy values of the generated data sets. A calibration means calibrates at least one of gain, offset, performance and dead pixel correction based on the determined centers and peaks of the acquired data sets.