A method to achieve spatial linearity and uniform resolution at the edges of monolithic scintillation crystal detectors for PET

Ruud Vinke, Peter D. Olcott, Jung Yeol Yeom, Craig S. Levin

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

3 Citations (Scopus)

Abstract

We have performed Monte Carlo simulations of the scintillation light transport between two adjacent 27.2 mm × 26.7 mm × 20 mm LYSO crystals, optically coupled together using Meltmount coupling medium with a refractive index of 1.7. Each crystal was read out by 4 Hamamatsu S11828- 3344M monolithic SiPM arrays from one crystal side. Event positioning reconstruction results show that this optical coupling technique can substantially reduce the edge-artifacts in these crystals. With realistic values for the multiplication noise of the SiPMs and electronic readout noise, we obtain intrinsic spatial resolutions of ∼3.1 mm FWHM at the center and ∼3.0 mm FWHM at 0.6 mm from the optical coupling edge of the 20 mm thick monolithic crystals. When reducing the number of readout channels by applying a 4 1 multiplexing ratio, a ∼4.1 and ∼4.3 mm FWHM resolution, respectively, at the center and 0.6 mm from the optical coupling edge was obtained. The simulations further show that a coincidence timing resolution of 350 ps FWHM can be obtained with this crystal geometry, with a 30% SiPM photon detection efficiency (PDE).

Original languageEnglish
Title of host publication2012 IEEE Nuclear Science Symposium and Medical Imaging Conference Record, NSS/MIC 2012
Pages2270-2273
Number of pages4
DOIs
Publication statusPublished - 2012
Externally publishedYes
Event2012 IEEE Nuclear Science Symposium and Medical Imaging Conference Record, NSS/MIC 2012 - Anaheim, CA, United States
Duration: 2012 Oct 292012 Nov 3

Publication series

NameIEEE Nuclear Science Symposium Conference Record
ISSN (Print)1095-7863

Other

Other2012 IEEE Nuclear Science Symposium and Medical Imaging Conference Record, NSS/MIC 2012
CountryUnited States
CityAnaheim, CA
Period12/10/2912/11/3

ASJC Scopus subject areas

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

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    Vinke, R., Olcott, P. D., Yeom, J. Y., & Levin, C. S. (2012). A method to achieve spatial linearity and uniform resolution at the edges of monolithic scintillation crystal detectors for PET. In 2012 IEEE Nuclear Science Symposium and Medical Imaging Conference Record, NSS/MIC 2012 (pp. 2270-2273). [6551515] (IEEE Nuclear Science Symposium Conference Record). https://doi.org/10.1109/NSSMIC.2012.6551515