NDLI: LYSO-SSPM based PET detector module for combined PET/MRI applications

Content Provider	IEEE Xplore Digital Library
Author	Dokhale, P. Yibao Wu Yongfeng Yang Robertson, R. Stapels, C. Cristian, J. Cherry, S. Shah, K.
Copyright Year	2010
Description	Author affiliation: Radiation Monitoring Devices Inc., 44 Hunt Street, Watertown, MA, 02472 USA (Dokhale, P.; Robertson, R.; Stapels, C.; Cristian, J.; Shah, K.) \|\| Department of Biomedical Engineering, University of California, Davis, CA 95616, USA (Yibao Wu; Yongfeng Yang; Cherry, S.)
Abstract	We are investigating the performance of a LYSO-solid state photomultiplier (SSPM) based PET detector in a magnetic resonance imaging (MRI) scanner to exploit the potential advantage of a combined PET/MRI system. SSPMs are compact, have high gain at low bias, fast response time and they are insensitive to magnetic fields which makes them very attractive for combined PET/MRI applications. A PET detector was built by coupling a 4×4 LYSO array with each element 1.5×1.5×20 $mm^{3}$ to the matching 4×4 SSPM array mounted on a non magnetic substrate and was positioned in the annulus between the RF and the gradient coils of 7T Bruker Biospec MRI system. Data was taken inside and outside the magnet, and when inside the magnet with Spin Echo and Gradient Echo pulse sequences on. The flood images were compared with the once recorded outside and inside with MRI sequences. No effects of either the static magnetic field, or the running of pulse sequences were observed. The energy resolution measured was 16% (FWHM) at 511 keV for the complete detector module. No change in the location of the photopeak was observed with and without the MRI sequences running. The measured energy resolution remained unchanged, suggesting that there was no significant loss in signal amplitude. A structured cylindrical MR phantom containing water was imaged to assess the effect of the LYSO-SSPM detector on the MR data acquisition. No obvious artifacts were observed in the resulting phantom images when compared with the ones acquired without the PET detector. Results shows that the direct coupled SSPM-LYSO detector works with no significant effects in the 7T magnet, both from the PET and MRI perspective.
Starting Page	3158
Ending Page	3160
File Size	916696
Page Count	3
File Format	PDF
ISBN	9781424491063
ISSN	10957863
e-ISBN	9781424491056
DOI	10.1109/NSSMIC.2010.5874384
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	Positron emission tomography Magnetic resonance imaging Detectors Arrays Magnetic fields Crystals Energy resolution
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
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
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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