A simple approach to control rms(B1) by pulse length in variable flip angle (VFA) T1 mapping of human brain
(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:
https://lup.lub.lu.se/record/5cfd5222-4def-4db0-aafa-b8ff7e0da363
- author
- Helms, Gunther
LU
- organization
- publishing date
- 2021-04-30
- 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}}, }