Continuous SWIFT

Djaudat Idiyatullin; Steven Suddarth; Curtis A. Corum; Gregor Adriany; Michael Garwood

doi:10.1016/j.jmr.2012.04.016

Continuous SWIFT

Djaudat Idiyatullin, Steven Suddarth, Curtis A. Corum, Gregor Adriany, Michael Garwood

Research output: Contribution to journal › Article › peer-review

48 Scopus citations

Abstract

This work describes our first efforts to implement SWIFT (SWeep Imaging with Fourier Transformation) in continuous mode for imaging and spectroscopy. We connected a standard quadrature hybrid with a quad coil and acquired NMR signal during continuous radiofrequency excitation. We utilized a chirped radiofrequency pulse to minimize the instantaneous radiofrequency field during excitation of the spin system for the target flip angle and bandwidth. Due to the complete absence of "dead time", continuous SWIFT has the potential to extend applications of MRI and spectroscopy in studies of spin systems having extremely fast relaxation or broad chemical shift distributions beyond the range of existing MRI sequences.

Original language	English (US)
Pages (from-to)	26-31
Number of pages	6
Journal	Journal of Magnetic Resonance
Volume	220
DOIs	https://doi.org/10.1016/j.jmr.2012.04.016
State	Published - Jul 2012

Bibliographical note

Funding Information:
This research was supported by NIH P41 RR008079, S10 RR023730, S10 RR027290 RR008079, R21 CA139688 Grants and the WM Keck Foundation. We thank Drs. Ryan Chamberlain and Peter Andersen for useful discussions and Drs. Jutta Ellermann, Wen Ling, and Elizabeth Arendt for the opportunity to use the TKA sample in this study. In addition, we thank Dr. Rajesh Venkataraman for developing the gridding code.

Keywords

Continuous wave
MRI
SWIFT
Spectroscopy
Sweep Imaging

Center for Magnetic Resonance Research (CMRR) tags

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10.1016/j.jmr.2012.04.016

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title = "Continuous SWIFT",

abstract = "This work describes our first efforts to implement SWIFT (SWeep Imaging with Fourier Transformation) in continuous mode for imaging and spectroscopy. We connected a standard quadrature hybrid with a quad coil and acquired NMR signal during continuous radiofrequency excitation. We utilized a chirped radiofrequency pulse to minimize the instantaneous radiofrequency field during excitation of the spin system for the target flip angle and bandwidth. Due to the complete absence of {"}dead time{"}, continuous SWIFT has the potential to extend applications of MRI and spectroscopy in studies of spin systems having extremely fast relaxation or broad chemical shift distributions beyond the range of existing MRI sequences.",

keywords = "Continuous wave, MRI, SWIFT, Spectroscopy, Sweep Imaging",

author = "Djaudat Idiyatullin and Steven Suddarth and Corum, {Curtis A.} and Gregor Adriany and Michael Garwood",

note = "Funding Information: This research was supported by NIH P41 RR008079, S10 RR023730, S10 RR027290 RR008079, R21 CA139688 Grants and the WM Keck Foundation. We thank Drs. Ryan Chamberlain and Peter Andersen for useful discussions and Drs. Jutta Ellermann, Wen Ling, and Elizabeth Arendt for the opportunity to use the TKA sample in this study. In addition, we thank Dr. Rajesh Venkataraman for developing the gridding code. ",

year = "2012",

month = jul,

doi = "10.1016/j.jmr.2012.04.016",

language = "English (US)",

volume = "220",

pages = "26--31",

journal = "Journal of Magnetic Resonance",

issn = "1090-7807",

publisher = "Academic Press Inc.",

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TY - JOUR

T1 - Continuous SWIFT

AU - Idiyatullin, Djaudat

AU - Suddarth, Steven

AU - Corum, Curtis A.

AU - Adriany, Gregor

AU - Garwood, Michael

N1 - Funding Information: This research was supported by NIH P41 RR008079, S10 RR023730, S10 RR027290 RR008079, R21 CA139688 Grants and the WM Keck Foundation. We thank Drs. Ryan Chamberlain and Peter Andersen for useful discussions and Drs. Jutta Ellermann, Wen Ling, and Elizabeth Arendt for the opportunity to use the TKA sample in this study. In addition, we thank Dr. Rajesh Venkataraman for developing the gridding code.

PY - 2012/7

Y1 - 2012/7

N2 - This work describes our first efforts to implement SWIFT (SWeep Imaging with Fourier Transformation) in continuous mode for imaging and spectroscopy. We connected a standard quadrature hybrid with a quad coil and acquired NMR signal during continuous radiofrequency excitation. We utilized a chirped radiofrequency pulse to minimize the instantaneous radiofrequency field during excitation of the spin system for the target flip angle and bandwidth. Due to the complete absence of "dead time", continuous SWIFT has the potential to extend applications of MRI and spectroscopy in studies of spin systems having extremely fast relaxation or broad chemical shift distributions beyond the range of existing MRI sequences.

AB - This work describes our first efforts to implement SWIFT (SWeep Imaging with Fourier Transformation) in continuous mode for imaging and spectroscopy. We connected a standard quadrature hybrid with a quad coil and acquired NMR signal during continuous radiofrequency excitation. We utilized a chirped radiofrequency pulse to minimize the instantaneous radiofrequency field during excitation of the spin system for the target flip angle and bandwidth. Due to the complete absence of "dead time", continuous SWIFT has the potential to extend applications of MRI and spectroscopy in studies of spin systems having extremely fast relaxation or broad chemical shift distributions beyond the range of existing MRI sequences.

KW - Continuous wave

KW - MRI

KW - SWIFT

KW - Spectroscopy

KW - Sweep Imaging

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DO - 10.1016/j.jmr.2012.04.016

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AN - SCOPUS:84863304433

SN - 1090-7807

VL - 220

SP - 26

EP - 31

JO - Journal of Magnetic Resonance

JF - Journal of Magnetic Resonance

ER -

Continuous SWIFT

Abstract

Bibliographical note

Keywords

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