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Phase Encoding Gradient
(G
φ
) The
phase encoding
gradient
is a
magnetic field gradient
that allows the encoding of the spatial signal location along a
second
dimension by different
spin
phases. The
phase encoding
gradient
is applied after
slice selection
and
excitation
(before the
frequency encoding gradient
), orthogonally to the other two gradients. The
spatial resolution
is directly related to the number of
phase encoding
steps (gradients).
•
View the DATABASE results for '
Phase Encoding Gradient
' (18).
Further Reading:
Basics:
RARE
Monday, 3 December 2012
by
www2.warwick.ac.uk
News & More:
Principles of Magnetic Resonance Imaging
Friday, 21 December 2001
by
www.mikepuddephat.com
Phase Encoding Order
The temporal order in which the
phase encoding gradient
pulses are applied. The order can be sequential, centric, reverse centric, random, etc.
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Phase Mismapping (Artifact)
See
Motion Artifact
.
Phase Modulated Rotating Frame Imaging
(PMRFI) See
Rotating Frame of Reference
and
Nutation
.
Phase Oversampling
The data acquisition beyond the
FOV
in
phase encoding
direction, with doubling the number of
acquisitions
and the
scan time
.
See also
Oversampling
and
Aliasing Artifact
.
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[last update: 2024-02-26 03:41:00]