NDLI: Assessment of artifacts in simultaneous PET and MR imaging

Content Provider	IEEE Xplore Digital Library
Author	Slates, R. Shao, Y. Farahani, K. Marsden, P.K. Cherry, S.R. Meadors, K. Taylor, J. Summers, P.E. Williams, S. Beech, J.
Copyright Year	1998
Description	Author affiliation: Crump Inst. for Biol. Imaging, California Univ., Los Angeles, CA, USA (Slates, R.)
Abstract	The authors have assessed the possibility of artifacts that can arise from performing simultaneous PET and MR imaging using a small prototype MR compatible PET scanner (McPET). The scanner consists of a single ring of 72, 2/spl times/2/spl times/5 mm/sup 3/, LSO (lutetium oxyorthosilicate) crystals read out by 3 Phillips XP1722 multi-channel photomultiplier tubes (MC-PMT's). The crystals are connected to the MC-PMT pixels using 4 meter long, 2 mm diameter double clad optical fibers, thus allowing the PET electronics to reside outside the main magnetic field. Experiments have been performed to critically examine any susceptibility artifacts or electromagnetic interference artifacts in the MR images caused by the PET system. The MR images were acquired by using a Siemens Vision 1.5 T clinical scanner. In addition, artifacts in the PET images caused by the operation of the PET scanner inside the MR system were investigated. Biological tissue (fruit) and a T2-weighted spin echo sequence (TR=2000 ms, TE=99 ms) were used to examine susceptibility artifacts due to McPET's components (LSO, optical fibers) in the MR field of view. A uniform disk shaped phantom was imaged using a T1-weighted spin echo sequence (TR=280 ms, TE=12 ms) with and without the PET electronics switched on to determine electromagnetic interference effects. A range of MR pulse sequences were studied for any possible artifacts they might introduce in either the PET or MR images at different field strengths. The results demonstrate that it is possible to achieve artifact free PET and MR images simultaneously using the authors' McPET scanner with several different conventional MR scanners.
Starting Page	1357
Ending Page	1360
File Size	428255
Page Count	4
File Format	PDF
ISBN	0780342585
ISSN	10823654
DOI	10.1109/NSSMIC.1997.670573
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1997-11-09
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Positron emission tomography Optical imaging Crystals Optical fibers Electromagnetic interference Prototypes Photomultipliers Magnetic fields Biological tissues Imaging phantoms
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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