Investigation of the count rate performance of General Electric advance positron emission tomograph

Journal Article · Tue Aug 01 04:00:00 EDT 1995 · IEEE Transactions on Nuclear Science

DOI:https://doi.org/10.1109/23.467750· OSTI ID:148047

Lewellen, T K; Kohlmyer, S G; Miyaoka, R S; Schubert, S; Stearns, C W

A series of 2D and 3D count rate measurements have been carried out on the Advance PET system. The measurements include: NEMA standard protocols; simultaneous imaging of two small vials containing [O-15] water and [F-18]; a cardiac insert place in a water filled elliptical tank; two different head sized cylindrical tanks; and a Hoffman 3D phantom. The data were processed with and without dead time and scatter corrections. Plots were made of the total count rate, randoms, trues + scatter, scatter corrected trues, and noise equivalent count rate as a function of total activity in the machine and as the {mu}Ci/cc in the phantoms. The accuracy of deadtime corrections was also measured. In 2D mode the NEMA standard protocol resulted in maximum `trues` count rates of 540,000 cps in high sensitivity mode. In 3D mode the head sized cylindrical phantoms yielded a maximum trues rate of approximately 950,000 cps. Recovery of the water half-life was accurate with up to 50 mCi for the cardiac insert in 2D mode.

• OSTI ID: 148047
• Report Number(s): CONF-941061--
• Journal Information: IEEE Transactions on Nuclear Science, Journal Name: IEEE Transactions on Nuclear Science Journal Issue: 4Pt1 Vol. 42; ISSN 0018-9499; ISSN IETNAE
• Country of Publication: United States
• Language: English

Related Subjects

55 BIOLOGY AND MEDICINE
BASIC STUDIES
IMAGE PROCESSING
PERFORMANCE
POSITRON COMPUTED TOMOGRAPHY
SCATTERING
THREE-DIMENSIONAL CALCULATIONS
TWO-DIMENSIONAL CALCULATIONS