RF slice profile effects in magnetic resonance fingerprinting

Taehwa Hong, Dongyeob Han, Min Oh Kim, Dong Hyun Kim

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

The radio frequency (RF) slice profile effects on T1 and T2 estimation in magnetic resonance fingerprinting (MRF) are investigated with respect to time-bandwidth product (TBW), flip angle (FA) level and field inhomogeneities. Signal evolutions are generated incorporating the non-ideal slice selective excitation process using Bloch simulation and matched to the original dictionary with and without the non-ideal slice profile taken into account. For validation, phantom and in vivo experiments are performed at 3T. Both simulations and experiments results show that T1 and T2 error from non-ideal slice profile increases with increasing FA level, off-resonance, and low TBW values. Therefore, RF slice profile effects should be compensated for accurate determination of the MR parameters.

Original languageEnglish
Pages (from-to)73-79
Number of pages7
JournalMagnetic Resonance Imaging
Volume41
DOIs
Publication statusPublished - 2017 Sep

Bibliographical note

Funding Information:
This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT and Future Planning (NRF-2015M3C7A1070700 and NRF-2016R1A2B3016273).

Publisher Copyright:
© 2017 Elsevier Inc.

All Science Journal Classification (ASJC) codes

  • Biophysics
  • Biomedical Engineering
  • Radiology Nuclear Medicine and imaging

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