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

Ruud Vinke, Peter D. Olcott, Jungyeol 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 Dec 1
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

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ASJC Scopus subject areas

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

Cite this

Vinke, R., Olcott, P. D., Yeom, J., & 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