NDLI: Signal analysis for improved timing resolution with scintillation detectors for TOF PET imaging

Content Provider	IEEE Xplore Digital Library
Author	Wiener, R.I. Kaul, M. Surti, S. Karp, J.S.
Copyright Year	2010
Description	Author affiliation: Department of Radiology at the University of Pennsylvania, Philadelphia, PA 19104 USA (Surti, S.) \|\| Department of Physics and Astronomy at the University of Pennsylvania, Philadelphia, PA 19104 USA (Wiener, R.I.; Kaul, M.; Karp, J.S.)
Abstract	Clinical TOF PET systems offer significantly degraded timing performance in comparison to that measured with small crystal geometries of the same scintillators. The usage of long, narrow crystal geometries is a major contributor to the degradation in system timing performance. We explore the effect of increased pixel length on timing performance of LaBr[Ce], CeBr and LYSO detectors. Using fast signal digitization we characterize the response of the detector to 511keV photons interacting at different depths. Systematic shift in time pickoff with interaction depth is shown to degrade the timing performance of long crystals. Collected light, signal shape and signal arrival time are shown to correlate with interaction depth. The depth dependence of detector response shows strong dependence on surface treatment, with finer surface treatment corresponding to reduced depth sensitivity. The correlated dependencies of time pickoff, energy and signal shape offer a method for recovering timing information lost due to interaction depth dispersion. An energy-based correction to the time pickoff is shown to improve detector timing resolution. The improvement in timing performance of thick detectors with single sided readout demonstrates the benefit of inclusion of additional signal information attainable by fast signal digitization.
Starting Page	1991
Ending Page	1995
File Size	861321
Page Count	5
File Format	PDF
ISBN	9781424491063
ISSN	10957863
e-ISBN	9781424491056
DOI	10.1109/NSSMIC.2010.5874124
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-10-30
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Photonics Extraterrestrial measurements Signal resolution Energy measurement Pixel Timing Ions
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
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9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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