NDLI: A refined circuit model of high temperature superconducting spiral coils for MRI

Content Provider	IEEE Xplore Digital Library
Author	Gao, E. Ma, Q.Y.
Copyright Year	2002
Abstract	A high temperature superconducting (HTS) spiral coil for magnetic resonance imaging (MRI) usually contains many turns of thin track patterned on an HTS film. The total length of the coil track is long (up to few meters) in order to meet the requirement of fitting the resonance frequency to that of the MRI scanner, in the range from 4 MHz (0.1 T of magnetic field) to about 100 MHz (high field). It takes too long time for commercially available software to simulate such circuits because of the relatively large size and small track width of the coil. A new computational frequency-domain model is developed for design and analysis of HTS spiral surface coils for application to MRI. The model is faster in the simulation of the resonance frequencies and s-parameters of the HTS spiral coils because some approximations are used for the coils with long track and low resonance frequency. The new model is based on the circuit analyses theory. The 2-inch coils were simulated for a field of 0.5 T. Tuning and matching are studied by using this model.
Sponsorship	Council on Superconductivity Appl. Superconductivity Conference Inc MIT
Starting Page	403
Ending Page	406
Page Count	4
File Size	343075
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	High temperature superconductors Spirals Magnetic resonance imaging Superconducting coils Superconducting films Resonant frequency Computational modeling Circuit simulation Magnetic films Magnetic fields
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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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
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