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Embroidered Coils for Magnetic Resonance Sensors
School of Science and Technology, Nottingham Trent University, Clifton Lane, Nottingham. NG11 8NS, UK
School of Computing, Engineering & Information Sciences, Northumbria University. NE1 8ST, UK
School of Art and Design, Nottingham Trent University, Burton Street, Nottingham NG1 4BU, UK
* Author to whom correspondence should be addressed.
Received: 12 December 2012; in revised form: 22 January 2013 / Accepted: 29 March 2013 / Published: 18 April 2013
Abstract: Magnetic resonance imaging is a widely used technique for medical and materials imaging. Even though the objects being imaged are often irregularly shaped, suitable coils permitting the measurement of the radio-frequency signal in these systems are usually made of solid copper. One problem often encountered is how to ensure the coils are both in close proximity and conformal to the object being imaged. Whilst embroidered conductive threads have previously been used as antennae in mobile telecommunications applications, they have not previously been reported for use within magnetic resonance. In this paper we show that an embroidered single loop coil can be used in a commercial unilateral nuclear magnetic resonance system as an alternative to a solid copper. Data is presented showing the determination of both longitudinal (T1) and effective transverse (T2eff) relaxation times for a flat fabric coil and the same coil conformed to an 8 cm diameter cylinder. We thereby demonstrate the principles required for the wider use of fabric based conformal coils within nuclear magnetic resonance and magnetic resonance imaging.
Keywords: magnetic resonance; embroidered; high frequency coil; relaxation time
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Morris, R.H.; McHale, G.; Dias, T.; Newton, M.I. Embroidered Coils for Magnetic Resonance Sensors. Electronics 2013, 2, 168-177.
Morris RH, McHale G, Dias T, Newton MI. Embroidered Coils for Magnetic Resonance Sensors. Electronics. 2013; 2(2):168-177.
Morris, Robert H.; McHale, Glen; Dias, Tilak; Newton, Michael I. 2013. "Embroidered Coils for Magnetic Resonance Sensors." Electronics 2, no. 2: 168-177.