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Experimental analysis of parallel excitation using dedicated coil setups and simultaneous RF transmission on multiple channels
Author(s) -
Ullmann Peter,
Junge Sven,
Wick Markus,
Seifert Frank,
Ruhm Wolfgang,
Hennig Jürgen
Publication year - 2005
Publication title -
magnetic resonance in medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.696
H-Index - 225
eISSN - 1522-2594
pISSN - 0740-3194
DOI - 10.1002/mrm.20646
Subject(s) - excitation , electromagnetic coil , parallel communication , computer science , realization (probability) , transmission (telecommunications) , compensation (psychology) , waveform , channel (broadcasting) , field (mathematics) , electronic engineering , physics , telecommunications , engineering , mathematics , psychology , statistics , psychoanalysis , pure mathematics , quantum mechanics , radar
An experimental implementation and first performance analysis of parallel spatially selective excitation with an array of transmit coils and simultaneous transmission of individual waveforms on multiple channels is presented. This technique, also known as Transmit SENSE, uses the basic idea of parallel imaging to shorten the k ‐space trajectories that accompany multidimensional excitation pulses, and hence shorten the duration of such pulses. So far, this concept has only been presented in simulations and semi‐experimental studies since no hardware setup had been available for a full experimental realization. In this study, a hardware solution, in combination with a dedicated coil setup, is presented to overcome this limitation, and in several experiments of localized excitation and transmit field inhomogeneity compensation the practical feasibility of Transmit SENSE is demonstrated and a first performance analysis is given. Magn Reson Med, 2005. © 2005 Wiley‐Liss, Inc.