Accurate multislice gradient echo T(1) measurement in the presence of non-ideal RF pulse shape and RF field nonuniformity

Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine
G J ParkerP S Tofts

Abstract

A methodology is presented for estimating T(1) using a two-point technique with a standard multislice gradient echo sequence. The method explicitly corrects for the shape of the RF pulse and for spatial variations in transmitted RF field intensity. Including these factors in the calculation of T(1) gives a substantial improvement in accuracy and precision of two-point gradient echo T(1) measurements in the presence of RF nonuniformity and non-ideal pulse profiles. The mean accuracy of the technique was found to be 1.4%. The mean precision was found to be 3.0%. The mean variation along the axis of a head coil was found to be 2.3%.

References

Dec 1, 1991·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·I Kay, R M Henkelman
Jan 1, 1990·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·A Haase
Jan 1, 1990·Magnetic Resonance Imaging·G BrixW J Lorenz
Jan 1, 1987·Magnetic Resonance Imaging·E K FramN J Pelc
Jul 1, 1994·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·A SimmonsS R Arridge
Sep 1, 1993·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·S BlümlW J Lorenz
Sep 1, 1993·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·P Gowland, P Mansfield
Jan 1, 1993·Magnetic Resonance Imaging·D A WicksP S Tofts
Mar 1, 1996·The British Journal of Radiology·J A BrookesA D Murray
Jan 1, 1997·Magnetic Resonance Imaging·P S ToftsR N Clarke
May 1, 1997·Journal of Magnetic Resonance Imaging : JMRI·G J ParkerM O Leach
Apr 9, 1998·IEEE Transactions on Medical Imaging·K HeldH W Müller-Gärtner
Jun 9, 1998·IEEE Transactions on Medical Imaging·J G SledA C Evans
Dec 5, 1998·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·C M CollinsM B Smith
Oct 6, 2000·Journal of the Neurological Sciences·V L StevensonA J Thompson

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Citations

Feb 4, 2005·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Stefan RopeleFranz Fazekas
Oct 13, 2001·NMR in Biomedicine
Dec 12, 2007·Pediatric Radiology·Richard A JonesJ Damien Grattan-Smith
Oct 6, 2000·Journal of the Neurological Sciences·V L StevensonA J Thompson
May 27, 2011·Topics in Magnetic Resonance Imaging : TMRI·Sean C L Deoni
Aug 18, 2004·Journal of Neurology, Neurosurgery, and Psychiatry·M SymmsT A Yousry
May 25, 2012·The British Journal of Radiology·P S Tofts, D J Collins
May 27, 2008·Magnetic Resonance Imaging·Roman FleysherOded Gonen
Oct 6, 2012·Multiple Sclerosis : Clinical and Laboratory Research·Marios C YiannakasClaudia A M Wheeler-Kingshott
May 20, 2017·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Rahel HeuleOliver Bieri
May 5, 2005·British Journal of Cancer·M O LeachUNKNOWN Pharmacodynamic/Pharmacokinetic Technologies Advisory Committee, Drug Development Office, Cancer Research UK
Apr 10, 2017·Magnetic Resonance Imaging·Taehwa HongDong-Hyun Kim
Mar 17, 2017·Journal of Magnetic Resonance Imaging : JMRI·Mathieu BoudreauG Bruce Pike
Jan 21, 2010·Multiple Sclerosis : Clinical and Laboratory Research·Konstantinos PapadopoulosDeclan T Chard
Apr 19, 2007·Multiple Sclerosis : Clinical and Laboratory Research·G R DaviesD H Miller
Sep 7, 2004·Annals of Neurology·Klaus SchmiererDavid H Miller
Aug 27, 2003·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Daniel J Tozer, Paul S Tofts
Jun 20, 2003·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·D TozerP S Tofts
Mar 25, 2011·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Gunther HelmsPeter Dechent
Apr 1, 2011·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Dimitrios C KarampinosSharmila Majumdar
Jan 18, 2014·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Zaheer AbbasNadim J Shah
Feb 2, 2012·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Mitchell A CooperYi Wang
Nov 13, 2018·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Rahel HeuleOliver Bieri
Sep 21, 2006·Physics in Medicine and Biology·Cornelis A T Van den BergJan J W Lagendijk
Dec 28, 2006·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Vasily L Yarnykh
Jul 31, 2007·Journal of Magnetic Resonance Imaging : JMRI·Klaus SchmiererDavid H Miller
Sep 1, 2007·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Nicholas G Dowell, Paul S Tofts
Jan 30, 2008·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Klaus SchmiererDavid H Miller
Feb 28, 2008·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Xiawei Ou, Daniel Frank Gochberg
Dec 20, 2008·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·James P B O'ConnorGeoff J M Parker
Feb 3, 2009·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Cheng YangWalter M Stadler
May 1, 2010·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Defeng WangPheng Ann Heng
Jul 10, 2010·Physics in Medicine and Biology·Henning Dathe, Gunther Helms
Jul 16, 2010·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Wen LiXin Yu
Oct 30, 2010·Journal of Magnetic Resonance Imaging : JMRI·Klaus SchmiererDaniel J Tozer
Feb 2, 2006·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Hai-Ling Margaret Cheng, Graham A Wright
Oct 12, 2010·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Caleb RobertsGeoff J M Parker

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