Mapping the inversion efficiency (finv): Comparison between adiabatic pulses for use in MP2RAGE-based T1-mapping

Hampus Olsson, Gunther Helms

Forskningsoutput: Kapitel i bok/rapport/Conference proceedingKonferenspaper i proceedingPeer review

Sammanfattning

Accuracy in MP2RAGE-based T1-mapping relies on knowledge of the imperfect inversion efficiency (finv) of the inversion pulse. Here we map the inversion efficiency of different adiabatic inversion pulses in human brain at 7T. We identified a mean finv=0.86, which is substantially lower than the finv=0.96 typically assumed in MP2RAGE. We further observed a lower finv in white matter (WM) than in the rest of the cerebrum. Subsequent T1 estimates differed by approximately 90 ms in WM and 230 ms in GM when assuming either finv=0.86 or finv=0.96.

Originalspråkengelska
Titel på värdpublikationProceedings of the 2022 ISMRM & ISMRT Annual Meeting and Exhibition
UtgivningsortConcord, CA
FörlagInternational Society for Magnetic Resonance in Medicine
Volym30
StatusPublished - 2022 apr. 22
EvenemangJoint Annual Meeting ISMRM-ESMRMB 2022 - Excel Exhibition Centre, London, Storbritannien
Varaktighet: 2022 maj 72022 maj 12
https://www.ismrm.org/22m/

Publikationsserier

NamnProc Intl Soc Magn Reson Med
FörlagIntl. Society for Magnetic Resonance in Medicine (ISMRM)
Volym30
ISSN (elektroniskt)1545-4428

Konferens

KonferensJoint Annual Meeting ISMRM-ESMRMB 2022
Land/TerritoriumStorbritannien
OrtLondon
Period2022/05/072022/05/12
Internetadress

Ämnesklassifikation (UKÄ)

  • Radiologi och bildbehandling
  • Annan fysik

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