kT-spokes: combining kT-points with spokes to ease ramp pulse design for TOF slab selection with parallel transmission at 7T - Archive ouverte HAL Accéder directement au contenu
Communication Dans Un Congrès Année : 2018

kT-spokes: combining kT-points with spokes to ease ramp pulse design for TOF slab selection with parallel transmission at 7T

Résumé

TONE pulses counteract blood saturation through the imaged slab in TOF sequences, but their ramp profile is hampered by RF inhomogeneities at UHF. On the other hand, kz-spokes are known to compensate for in-plane B1 + heterogeneities in slice or slab selection. However, their design doesn't address thru-slab heterogeneities. To address them, a new pulse type called " kT-spokes " is introduced. As TONE pulses, kT-spokes efficacy is demonstrated with pTx at 7T in comparison with mere equivalent kz-spokes.
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Dates et versions

hal-01633716 , version 1 (17-11-2017)

Identifiants

  • HAL Id : hal-01633716 , version 1

Citer

Gaël Saïb, Vincent Gras, Franck Mauconduit, Alexandre Vignaud, Denis Le Bihan, et al.. kT-spokes: combining kT-points with spokes to ease ramp pulse design for TOF slab selection with parallel transmission at 7T. Joint Annual Meeting ISMRM-ESMRMB 2018, Jun 2018, Paris, France. ⟨hal-01633716⟩
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