TY - GEN
T1 - Characterization of TlBr Strip Detectors with Waveform Readouts
AU - Cronin, Kelsea P.
AU - Cirignano, Len
AU - Kim, Hadong
AU - Squillante, Michael R.
AU - Barber, H. Bradford
AU - Kupinski, Matthew A.
AU - Furenlid, Lars R.
N1 - Publisher Copyright:
© 2022 IEEE.
PY - 2022
Y1 - 2022
N2 - Single photon emission computed tomography (SPECT) is used to make a variety of clinical diagnoses. Recently there is an increased interest in SPECT systems with improved energy resolution to distinguish between multiple isotopes in alpha-emitting radio-nuclide therapy. Semiconductor detectors are ideal for this task as direct conversion of photon energy yields improved signal statistics. Both strip and pixel configurations can be optimized to meet spatial resolution requirements. Thallium bromide (TlBr) crystals have become of interest due to their high stopping power, large band-gap and ease of crystal purification. Since transport properties and stability has been improved it is timely to develop a complete understanding of TlBr and its best detector configurations. We have developed a time-dependent forward model for double-sided strip detectors. By sampling signal waveforms we have a tool for finding interaction depth and sub-pixel spatial resolution. Our work concludes by comparing simulation results to a TlBr 8x8 strip array developed by RMD. Our results show it may be possible to use "hit"strip waveforms to determine interaction depth. The waveform from the neighbor strips can contribute to sub-strip-pitch spatial resolution.
AB - Single photon emission computed tomography (SPECT) is used to make a variety of clinical diagnoses. Recently there is an increased interest in SPECT systems with improved energy resolution to distinguish between multiple isotopes in alpha-emitting radio-nuclide therapy. Semiconductor detectors are ideal for this task as direct conversion of photon energy yields improved signal statistics. Both strip and pixel configurations can be optimized to meet spatial resolution requirements. Thallium bromide (TlBr) crystals have become of interest due to their high stopping power, large band-gap and ease of crystal purification. Since transport properties and stability has been improved it is timely to develop a complete understanding of TlBr and its best detector configurations. We have developed a time-dependent forward model for double-sided strip detectors. By sampling signal waveforms we have a tool for finding interaction depth and sub-pixel spatial resolution. Our work concludes by comparing simulation results to a TlBr 8x8 strip array developed by RMD. Our results show it may be possible to use "hit"strip waveforms to determine interaction depth. The waveform from the neighbor strips can contribute to sub-strip-pitch spatial resolution.
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U2 - 10.1109/NSS/MIC44845.2022.10399249
DO - 10.1109/NSS/MIC44845.2022.10399249
M3 - Conference contribution
AN - SCOPUS:85185385884
T3 - 2022 IEEE NSS/MIC RTSD - IEEE Nuclear Science Symposium, Medical Imaging Conference and Room Temperature Semiconductor Detector Conference
BT - 2022 IEEE NSS/MIC RTSD - IEEE Nuclear Science Symposium, Medical Imaging Conference and Room Temperature Semiconductor Detector Conference
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2022 IEEE Nuclear Science Symposium, Medical Imaging Conference, and Room Temperature Semiconductor Detector Conference, IEEE NSS MIC RTSD 2022
Y2 - 5 November 2022 through 12 November 2022
ER -