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Introduction to SWIFT (Sweep Imaging with Fourier Transformation) for Magnetic Resonance Imaging of Materials

Published online by Cambridge University Press:  26 February 2011

Curt Corum ,
Djaudat Idiyatullin ,
Steen Moeller ,
Jang-Yeon Park  and
Michael Garwood
Curt Corum
Affiliation:
corum@cmrr.umn.edu, University of Minnesota, Center for Magnetic Resonance Research, 2021 6th Street SE, Minneapolis, MN, 55455, United States, 612-625-5375, 612-626-2004
Djaudat Idiyatullin
Affiliation:
djaudat@cmrr.umn.edu, University of Minnesota, Center for Magnetic Resonance Research, 2021 6th Street SE, Minneapolis, MN, 55455, United States
Steen Moeller
Affiliation:
moeller@cmrr.umn.edu, University of Minnesota, Center for Magnetic Resonance Research, 2021 6th Street SE, Minneapolis, MN, 55455, United States
Jang-Yeon Park
Affiliation:
jypark@cmrr.umn.edu, University of Minnesota, Center for Magnetic Resonance Research, 2021 6th Street SE, Minneapolis, MN, 55455, United States
Michael Garwood
Affiliation:
gar@umn.edu, University of Minnesota, Center for Magnetic Resonance Research, 2021 6th Street SE, Minneapolis, MN, 55455, United States
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Abstract

A novel, fast, and quiet method of magnetic resonance imaging (MRI), called SWIFT (sweep imaging with Fourier transformation) has recently been introduced. In addition to SWIFT's potential for in-vivo MRI, it creates new opportunities for MRI of materials. SWIFT currently operates in 3d radial acquisition mode. A series of segmented hyperbolic secant excitation pulses is accompanied by acquisition in the gaps. Each excitation, after correlation with the pulse results in a free induction decay (FID). The spectrum corresponding to the FID is a projection. There is very little “dead time” between excitation and acquisition, making SWIFT useful for imaging of short T2 materials, but in total imaging times comparable to fast gradient echo sequences.

Keywords

nuclear magnetic resonance (NMR)polymerH
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 984: Symposium MM – Magnetic Resonance in Material Science , 2006 , 0984-MM09-06
Copyright
Copyright © Materials Research Society 2007

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