Publication: MRI slice selction with scaling functions
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Publication date
1996
Defense date
Advisors
Tutors
Journal Title
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Publisher
IEEE
Abstract
A new family of amplitude-only
radiofrequency modulation waveforms for slice selection
in Magnetic Resonance Imaging (MRI) is presented.
Based on the scaling functions associated to different
wavelet families, these new envelope waves provide higher
slice selectivity than gaussian or sinc functions. They are
also more compact on the time domain, since no
truncation is needed, allowing to reduce the time required
for the slice selection process. This feature is valuable on
multislice-multiecho and fast acquisitions. Their
performance has been evaluated both through simulations
of the Bloch equations, and by measuring the slice width
of real ramp phantoms images. The simulation results
show that this amplitude modulation causes a phase
behaviour of the resonant protons within the selected
volume that is more coherent than with other techniques.
This effect can be related to the higher intensity of the
images acquired with this slice selection procedure.
Description
Proceedings of: 18th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, Amsterdam, 31 Oct. - 03 Nov. 1996.
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Bibliographic citation
Proceedings of the 18th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 1996. Bridging Disciplines for Biomedicine, vol. 2, 1996. Pp. 710-711