NDLI: High-T/sub c/ superconducting surface coil for 2 tesla magnetic resonance imaging of small animals

Content Provider	IEEE Xplore Digital Library
Author	Wosik, J. Wang, F. Xie, L.-M. Strikovski, M. Kamel, M. Nesteruk, K. Bilgen, M. Narayana, P.A.
Copyright Year	2002
Abstract	The performance of small-volume Magnetic Resonance Imaging (MRI) depends on the system noise determined by noise of a probe and/or of a preamplifier (not by the body noise). Several demonstrations confirmed that, for selected applications, high-T/sub c/ superconductor MRI receiver coils have superior properties to those of comparable copper coils. We report on the outstanding performance of modified twin horseshoe YBCO rf surface probes in a 2 Tesla scanner operating at 77 K. They were used for MR imaging of spinal cord injuries in rats and for imaging of brain of small animals. The probes were designed with a virtual ground plane, thus reducing the coil-to-ground dielectric losses and making its resonant frequency less sensitive to the body proximity. Each coil was fabricated using large area 500 nm thick double-sided YBa/sub 2/Cu/sub 3/O/sub x/ films deposited on sapphire r-cut substrates. We compare the performance of the 2 Tesla high critical temperature superconductor (HTS) probe with that made of a copper coil. Designing and cryo-packaging of HTS MRI probes is discussed.
Sponsorship	Council on Superconductivity Appl. Superconductivity Conference Inc MIT
Starting Page	681
Ending Page	684
Page Count	4
File Size	544037
File Format	PDF
ISSN	10518223
Volume Number	11
Issue Number	1
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2001-03-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Superconducting coils Probes Magnetic resonance imaging Superconducting device noise Magnetic noise Copper High temperature superconductors Dielectric losses Dielectric substrates Superconducting films
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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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
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