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Spoiled Gradient Echo SequenceInfoSheet: - Sequences -
Intro, Overview, 
Types of, 
etc.MRI Resource Directory:
 - Sequences -
 
Spoiled gradient echo sequences use a spoiler gradient on the slice select axis during the end module to destroy any remaining transverse magnetization after the readout gradient, which is the case for short repetition times.
As a result, only z-magnetization remains during a subsequent excitation. This types of sequences use semi-random changes in the phase of radio frequency pulses to produce a spatially independent phase shift.
Companies use different acronyms to describe certain techniques.

Different terms for these gradient echo pulse sequences:
CE-FFE-T1 Contrast Enhanced Fast Field Echo with T1 Weighting,
GFE Gradient Field Echo,
FLASH Fast Low Angle Shot,
PS Partial Saturation,
RF spoiled FAST RF Spoiled Fourier Acquired Steady State Technique,
RSSARGE Radio Frequency Spoiled Steady State Acquisition Rewound Gradient Echo
S-GRE Spoiled Gradient Echo,
SHORT Short Repetition Techniques,
SPGR Spoiled Gradient Recalled (spoiled GRASS),
STAGE T1W T1 weighted Small Tip Angle Gradient Echo,
T1-FAST T1 weighted Fourier Acquired Steady State Technique,
T1-FFE T1 weighted Fast Field Echo.
In this context, 'contrast enhanced' refers to the pulse sequence, it does not mean enhancement with a contrast agent.
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• View the DATABASE results for 'Spoiled Gradient Echo Sequence' (11).Open this link in a new window

 
Further Reading:
  News & More:
3-D VOLUMETRIC IMAGING FOR STEREOTACTIC LESIONAL AND DEEP BRAIN STIMULATION SURGERY
Cutting Edge Imaging of THE Spine
February 2007   by www.pubmedcentral.nih.gov    
Spoiled Gradient RecalledInfoSheet: - Sequences -
Intro, Overview, 
Types of, 
etc.
 
(SPGR) The SPGR pulse sequence is similar to the spoiled GRASS sequence. The spoiled gradient recalled (SPGR) acquisition in steady state uses semi-random changes in the phase of the radio frequency (RF) pulses to produce a spatially independent phase shift.

See also Spoiled Gradient Echo Sequence and Gradient Recalled Acquisition in Steady State (GRASS).
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• View the DATABASE results for 'Spoiled Gradient Recalled' (2).Open this link in a new window

 
Further Reading:
  News & More:
Comparison of New Methods for Magnetic Resonance Imaging of Articular Cartilage(.pdf)
2002
MRI Resources 
Patient Information - Shoulder MRI - Liver Imaging - Contrast Agents - Libraries - Coils
 
Spoiled Steady State Acquisition Rewinded Gradient EchoInfoSheet: - Sequences -
Intro, Overview, 
Types of, 
etc.MRI Resource Directory:
 - Sequences -
 
(SARGE) Spoiled GRE sequences use a spoiler gradient on the slice select axis to destroy any remaining transverse magnetization after the readout gradient, with the result of short repetition times. This type of sequences use semi-random changes in the phase of RF pulses to produce a spatially independent phase shift.

See also Gradient Echo Sequence.
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Spoiler Gradient PulseInfoSheet: - Sequences -
Intro, Overview, 
Types of, 
etc.
 
Magnetic field gradient pulse applied to effectively remove transverse magnetization by producing a rapid variation of its phase along the direction of the gradient. This is done after the echo so that transverse magnetization is destroyed prior to the next excitation pulse, to spoil any remaining xy-magnetization or to refocus the xy-magnetization.
For example, when used to remove the unwanted signal resulting from an imperfect 180° refocusing RF pulse, a corresponding compensating gradient pulse may be applied prior to the refocusing RF pulse in order to avoid spoiling the desired transverse magnetization resulting from the initial excitation. Also called homospoil pulse.
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• View the DATABASE results for 'Spoiler Gradient Pulse' (6).Open this link in a new window

 
Further Reading:
  News & More:
Clinical evaluation of a speed optimized T2 weighted fast spin echo sequence at 3.0 T using variable flip angle refocusing, half-Fourier acquisition and parallel imaging
Wednesday, 25 October 2006
StacksInfoSheet: - Sequences -
Intro, Overview, 
Types of, 
etc.
 
A collection of slices in a multislice acquisition with the same orientation. Multi-stack acquisitions are possible when the stacks parameter is greater than one.
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• View the DATABASE results for 'Stacks' (4).Open this link in a new window

MRI Resources 
Equipment - Mass Spectrometry - MRI Centers - Journals - Supplies - Patient Information
 
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