Performance measurements of a PET/CT system with prototype SiPM detectors

Brad J. Kemp, William T. Peterson, Jorge Uribe, John J. Williams, Val Lowe, Charles W. Stearns

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

Performance measurements were conducted on a prototype PET/CT system under development by GE Healthcare. Performance measurements of spatial resolution, sensitivity, image quality, scatter fraction and count rate were obtained using NEMA NU2-2012 methodology. Timing and energy resolution were also measured. The radial and tangential transaxial and axial resolutions measured from FBP reconstructed images were 4.5, 4.3 mm and 5.2 mm FWHM at 1 cm from gantry center respectively. The system sensitivity was measured as 22.0 cps/kBq at the gantry center. The peak noise equivalent count rate was 283.4 kcps at 19.7 kBq/ml and the scatter fraction was 38.8%. The contrast of the 37, 22, and 10 mm spheres in the IQ phantom for TOF (and non-TOF) were 87.5 (82.8), 68.4 (67.2), and 34.6% (31.1%) respectively. The background variability of the same spheres for TOF (and non-TOF) were 3.6 (4.3), 4.6 (5.6) and 7.1% (8.7%) respectively. The lung error was 6% for TOF and 10% for non-TOF. A timing resolution of < 380ps and energy resolution of < 9.2% were measured. The prototype PET/CT system combines high sensitivity and high count rate capability with TOF capability.

Original languageEnglish (US)
Title of host publication2015 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781467398626
DOIs
StatePublished - Oct 3 2016
Event2015 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2015 - San Diego, United States
Duration: Oct 31 2015Nov 7 2015

Other

Other2015 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2015
CountryUnited States
CitySan Diego
Period10/31/1511/7/15

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Radiology Nuclear Medicine and imaging
  • Instrumentation

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    Kemp, B. J., Peterson, W. T., Uribe, J., Williams, J. J., Lowe, V., & Stearns, C. W. (2016). Performance measurements of a PET/CT system with prototype SiPM detectors. In 2015 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2015 [7582091] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/NSSMIC.2015.7582091