A study of data loss and mispositioning due to pileup in 2-D detectors in PET

Guido Germano, E.J. Hoffman

IEEE Transactions on Nuclear Science · 1990 · 65 citations · 17 references

Concepts

Abstract

The effect of event pileup was investigated with a PET (positron emission tomography) system which employs a 2-D detector-array system. Event pileup caused losses of resolution of 9%, 19.8%, and 32% of the FWHM (full width at half maximum) for 10, 20, and 30 mCi of positron emitter in the field of view (FOV), respectively. 9.4%, 18.7%, and 28.1% of the data from the outer planes of the module were incorrectly placed in the inner planes for 5, 10, and 15 mCi of the positron emitter in the FOV, respectively. A simple model of the process was formulated and found to be adequate to describe the major features of event pileup for a number of source configurations and a wide range of activities.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>

References

17