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GRASE specifications

Information


Unique identifier OMICS_32483
Name GRASE
Alternative name Genome Relative Abundance to Sequencing Effort
Interface Web user interface
Restrictions to use None
Computer skills Basic
Stability Stable
Maintained Yes

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Maintainer


  • person_outline Andrew Steen

Information


Unique identifier OMICS_32483
Name GRASE
Alternative name Genome Relative Abundance to Sequencing Effort
Software type Package/Module
Interface Command line interface
Restrictions to use None
Operating system Unix/Linux, Mac OS, Windows
Programming languages R
Computer skills Advanced
Stability Stable
Requirements
mgcv, shiny, shinyWidgets, dplyr, ggplot2, scales
Maintained Yes

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Versioning


No version available

Maintainer


  • person_outline Andrew Steen

Publication for Genome Relative Abundance to Sequencing Effort

GRASE citations

 (94)
call_split

Myelin status is associated with change in functional mobility following slope walking in people with multiple sclerosis

2018
PMCID: 5954324
PMID: 29780611
DOI: 10.1177/2055217318773540
call_split See protocol

[…] TE) = 2.89 ms, flip angle Θ = 8°, field of view (FOV) = 256 × 256 mm, 176 slices, 1 mm slice thickness, scan time = 9.83 min); (b) whole-cerebrum 32-echo three-dimensional gradient- and spin-echo (3D GRASE) for T2 measurement (TR = 1000 ms, echo times = 10, 20, 30, 40, …, 320 ms, 28 slices, 4 mm slice thickness, slice oversampling = 0.0%, in-plane voxel size = 1 × 1 mm, receiver bandwidth = 1250 H […]

library_books

Quantitative Ex Vivo MRI Changes due to Progressive Formalin Fixation in Whole Human Brain Specimens: Longitudinal Characterization of Diffusion, Relaxometry, and Myelin Water Fraction Measurements at 3T

2018
PMCID: 5826187
PMID: 29515998
DOI: 10.3389/fmed.2018.00031

[…] fat suppression = off, matrix size = 512 × 512 × 176, resolution = 0.49 mm × 0.49 mm × 0.98 mm, FOV = 250 mm × 250 mm × 172 mm, and scan time = 5 min. A multi-echo 3D combined gradient and spin echo (GRASE) sequence was used to acquire images with 32 different echo times () and was used for subsequent T2-relaxometry and multi-component MWI measurements (). Scan parameters for the 3D GRASE sequence […]

library_books

Multiband multi echo simultaneous ASL/BOLD for task induced functional MRI

2018
PLoS One
PMCID: 5794066
PMID: 29389985
DOI: 10.1371/journal.pone.0190427

[…] e shown that additional echoes collected in the MBME ASL/BOLD sequence can compensate for the longer TR.Of note, most recently developed ASL sequences have utilized a segmented 3D readout, such as 3D GRASE, or stack of spirals approaches []. These techniques can also acquire whole-brain, high resolution ASL data; however, they are not compatible with multi-echo (ME) time-series acquisitions as the […]

library_books

Bi exponential 3D T1ρ mapping of whole brain at 3 T

2018
Sci Rep
PMCID: 5775253
PMID: 29352234
DOI: 10.1038/s41598-018-19452-5

[…] laxation have demonstrated its utility in assessing white matter pathology including multiple sclerosis (MS), Alzheimer’s, and stroke. MRI techniques such as multi-echo T2, 3D gradient and spin echo (GRASE), and multi-component driven equilibrium single pulse observation of T1 and T2 (mcDESPOT) have been developed to use T2 to assess myelin.T1ρ refers to the spin lattice relaxation time constant i […]

library_books

Non Invasive Renal Perfusion Imaging Using Arterial Spin Labeling MRI: Challenges and Opportunities

2018
PMCID: 5871985
PMID: 29303965
DOI: 10.3390/diagnostics8010002

[…] dout duration and power deposition limit the achievable organ coverage, which is especially problematic when assessing focal disease. In recent years, 3D readouts based on the gradient and spin echo (GRASE) and rapid acquisition with relaxation enhancement (RARE) pulse sequences have been gaining traction in renal ASL (e.g., GRASE: []; RARE: []). The simultaneous excitation of the entire image vol […]

library_books

Test retest reliability of myelin imaging in the human spinal cord: Measurement errors versus region and aging induced variations

2018
PLoS One
PMCID: 5749716
PMID: 29293550
DOI: 10.1371/journal.pone.0189944

[…] wn good sensitivity to myelin content in MS patients post-mortem [] and in vivo []. While the earliest implementations of MWI were not clinically feasible, techniques such as Gradient- And Spin-Echo (GRASE [,]) were shown to speed up the acquisition []. Further investigations are ongoing.The time constant of the transverse relaxation due to spin-spin interactions and local field inhomogeneities (T […]

Citations

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GRASE institution(s)
Department of Earth and Planetary Sciences, University of Tennessee, Knoxville, TN, USA
GRASE funding source(s)
Supported by the National Science Foundation grant OCE-1431598 and a C462 DEBI subaward.

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