Performance comparison of a current LSO PET scanner versus the same scanner with upgraded electronics

Performance of an existing LSO PET scanner was compared to that of the same scanner with upgraded electronics. TDC step resolution decreased to 500 ps while background corrected system energy resolution increased to 18.89%. This allowed a lowering of the coincidence time window to 4.5 ns and an increase in the system LLD to 400 keV. Electronics dead time was reduced to 136 ns. Singles rates from each DEA were increased 100%. An almost 100% increase in NEC was achieved due to the increased electronics performance. The peak NEC was greater than 93,000.

[1]  J. M. Rochelle,et al.  A custom mixed signal CMOS integrated circuit for high performance PET tomograph front-end applications , 2002, 2002 IEEE Nuclear Science Symposium Conference Record.

[2]  J. M. Rochelle,et al.  Performance characteristics of a new generation of processing circuits for PET applications , 2002, 2002 IEEE Nuclear Science Symposium Conference Record.

[3]  Michael J. Paulus,et al.  A Custom CMOS Integrated Circuit For PET Tomograph Front-end Applications , 1993, 1993 IEEE Conference Record Nuclear Science Symposium and Medical Imaging Conference.

[4]  J.W. Young,et al.  FPGA based front-end electronics for a high resolution PET scanner , 1999, 1999 IEEE Nuclear Science Symposium. Conference Record. 1999 Nuclear Science Symposium and Medical Imaging Conference (Cat. No.99CH37019).