TY - GEN
T1 - Multibeam healing for laser micromachining of scintillator arrays
AU - Singh, Bipin
AU - Akarapu, Ravindra
AU - Sabet, Hamid
AU - Guers, Manton
AU - Segall, Albert E.
AU - Nagarkar, Vivek V.
PY - 2011/1/1
Y1 - 2011/1/1
N2 - 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.
AB - 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.
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U2 - 10.1109/NSSMIC.2011.6152620
DO - 10.1109/NSSMIC.2011.6152620
M3 - Conference contribution
SN - 9781467301183
T3 - IEEE Nuclear Science Symposium Conference Record
SP - 3410
EP - 3413
BT - 2011 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2011
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2011 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2011
Y2 - 23 October 2011 through 29 October 2011
ER -