Multibeam healing for laser micromachining of scintillator arrays

Bipin Singh, Ravindra Akarapu, Hamid Sabet, Manton Guers, Albert E. Segall, Vivek V. Nagarkar

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

Abstract

Cost-effective, high-performance detectors are in high demand for use in positron emission tomography (PET) and other clinical and pre-clinical nuclear medicine imaging systems. Such detectors require high-resolution, high-sensitivity pixelated scintillator arrays. Scintillators with high stopping power, such as lutetium oxyorthosilicate (LSO) and lutetium-yttrium oxyorthosilicate (LYSO), are widely used in PET. However, the mechanical pixelation of such materials (especially to achieve <1x1 mm2 pixels), yield issues, and their assembly into arrays is expensive and results in small fill factors (large inter-pixel gaps) and, hence, lower detector sensitivity than desired. Laser pixelation of scintillator material can potentially increase scintillator fill factor, resulting in higher sensitivity and yield and lower costs. We have adopted a multibeam laser micromachining approach to pixelate LSO with enhanced yield and improved throughput. The results of the experiments and the finite-element modeling are discussed here.

Original languageEnglish (US)
Title of host publication2011 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2011
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages3410-3413
Number of pages4
ISBN (Print)9781467301183
DOIs
StatePublished - Jan 1 2011
Event2011 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2011 - Valencia, Spain
Duration: Oct 23 2011Oct 29 2011

Publication series

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

Other

Other2011 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2011
CountrySpain
CityValencia
Period10/23/1110/29/11

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All Science Journal Classification (ASJC) codes

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

Cite this

Singh, B., Akarapu, R., Sabet, H., Guers, M., Segall, A. E., & Nagarkar, V. V. (2011). Multibeam healing for laser micromachining of scintillator arrays. In 2011 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2011 (pp. 3410-3413). [6152620] (IEEE Nuclear Science Symposium Conference Record). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/NSSMIC.2011.6152620