gradient echo


Also found in: Acronyms.

field echo

An MRI term for an echo produced by reversing the direction of the magnetic field gradient to cancel out the position-dependent phase shifts that have accumulated due to the gradient.

gra·di·ent ech·o

(grā-dē'ĕnt ek'ō)
Echo produced as a result of gradient rephasing.
References in periodicals archive ?
Gradient echo cine images are obtained using spoiled gradient echo pulse sequences or SSFP sequences.
Intra-arterial thrombus visualized on T2* gradient echo imaging in acute ischemic stroke.
We could not find any alterations on T2 gradient echo images involving right striatum.
Gradient echo acquisition for superparamagnetic particles with positive contrast (GRASP): sequence characterization in embrane and glass superparamagnetic iron oxide phantoms at 1.
However, the inability of fast imaging with steady-state precession sequences to provide the reliable CSF flow quantification through the third ventricle floor fenestration, opens the space for the complementary use of phase-contrast MRI techniques, especially the incoherent gradient echo phase-contrast sequences (PC-GRE) or phase-contrast sequences with balanced steady-state free precession (PC-bSSFP) [24-26],
Quantification of liver iron concentration with magnetic resonance imaging by combining T1-, T2-weighted spin echo sequences and a gradient echo sequence.
Images were acquired with interleaved multislice 2-D and 3-D gradient echo sequences in combination with standard steady state MRI, said Dr.
Some methods examined include ultrasound perfusion imaging in acute ischemic stroke, computed tomography, and diffusion/perfusion-weighted magnetic resonance (MR) imaging in acute stroke, as well as other MR imaging methods such as FLAIR/T2 and gradient echo.
Di Girolamo and colleagues worked around this during dynamic MRI studies by performing T1-weighted spoiled 3D gradient echo acquisitions on the sagittal plane with a sanitary towel placed under the patient during micturition.
1]H-NMR and Chemometrics; Antioxidative Activity of Some Herbs and Spices--A Review of ESR Studies; The Subcellular Metabolism of Water and its Implications for Magnetic Resonance Image Contrast; Comparison of two Sequences: Spin-Echo and Gradient Echo for the Assessment of Dough Porosity During Proving; Solid-State NMR of Lyotropic Food Systems; Application of NMR and Hyphenated NMR Spectroscopy for the Study of Beer Components.
Axial Tl-weighted in-phase and opposed-phase gradient echo imaging is performed for soft tissue characterization, including identifying the presence of bulk or microscopic fat, hemorrhage or protein, and susceptibility artifact, which can aid in the identification of a normal air-containing appendix.
A two-dimensional (2D) gradient echo sequence was used to collect axial wave images.