Abstract #2399
SLR Pulse Implementation in Multi-Slice 2D FLASH Pulse Sequence for 3T MRI and Beyond
A Alhamud 1 , Jay Moore 2 , Neal Derman 1 , Ernesta Meintjes 1 , and Marcin Jankiewicz 1
1
Human Biology,MRC/UCT Medical Imaging
Research Unit, University of Cape Town, Cape Town,
Western Cape, South Africa,
2
Institute
of Imaging Science, Vanderbilt University, Nashville,
TN, United States
Excitation part of 2D FLASH multi-slice sequence is
replaced by a train of slice-selective SLR-pulses with
built-in |B
1
+
|-insensitivity.
Performance of the re-designed sequence, measured in SNR
gain over sequence with a standard excitation waveform,
is verified in-vivo experiment in human head at 3 Tesla.
The gain is substantial (up to 60% more SNR is observed)
in inhomogeneity-challenged areas even when
slice-profile of the standard waveform favors it over
the optimized alternative . This modification to FLASH
sequence represents a simple way in which image quality
can be improved in various MR modalities (including
fMRI, DTI and spectroscopy) in case where quality is
corrupted byRF and static field inhomogeneities.
This abstract and the presentation materials are available to members only;
a login is required.
Join Here
