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A simple approach to control rms(B1) by pulse length in variable flip angle (VFA) T1 mapping of human brain

Helms, Gunther LU orcid (2021) ISMRM and SMRT Annual Meeting and Exhibition 2021 In Proc Intl Soc Magn Reson Med 29.
Abstract
Controlling the saturation of bound magnetization in variable flip angle (VFA) experiments improves the derived parameter maps. Instead of using special CSMT RF pulses, we kept the rmsB1 constant simply by increasing the RF pulse duration with the square of the flip angle. At 3T, VFA T1 mapping of human brain thus showed better compliance to the Ernst equation than at constant pulse duration or B1 amplitude, but yielded shorter T1.
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
host publication
Proceedings of the 2021 ISMRM & ISMRT Annual Meeting and Exhibition
series title
Proc Intl Soc Magn Reson Med
volume
29
article number
3073
publisher
International Society for Magnetic Resonance in Medicine
conference name
ISMRM and SMRT Annual Meeting and Exhibition 2021
conference dates
2021-05-15 - 2021-05-20
ISSN
1545-4428
language
English
LU publication?
yes
id
5cfd5222-4def-4db0-aafa-b8ff7e0da363
alternative location
https://index.mirasmart.com/ISMRM2021/PDFfiles/3073.html
date added to LUP
2021-05-18 20:51:33
date last changed
2022-07-15 10:13:44
@inproceedings{5cfd5222-4def-4db0-aafa-b8ff7e0da363,
  abstract     = {{Controlling the saturation of bound magnetization in variable flip angle (VFA) experiments improves the derived parameter maps. Instead of using special CSMT RF pulses, we kept the rmsB<sub>1</sub> constant simply by increasing the RF pulse duration with the square of the flip angle. At 3T, VFA T<sub>1</sub> mapping of human brain thus showed better compliance to the Ernst equation than at constant pulse duration or B<sub>1</sub> amplitude, but yielded shorter T<sub>1</sub>.}},
  author       = {{Helms, Gunther}},
  booktitle    = {{Proceedings of the 2021 ISMRM & ISMRT Annual Meeting and Exhibition}},
  issn         = {{1545-4428}},
  language     = {{eng}},
  month        = {{04}},
  publisher    = {{International Society for Magnetic Resonance in Medicine}},
  series       = {{Proc Intl Soc Magn Reson Med}},
  title        = {{A simple approach to control rms(B<sub>1</sub>) by pulse length in variable flip angle (VFA) T<sub>1</sub> mapping of human brain}},
  url          = {{https://index.mirasmart.com/ISMRM2021/PDFfiles/3073.html}},
  volume       = {{29}},
  year         = {{2021}},
}