Articles with "gradient spin" as a keyword



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Diffusion‐prepared 3D gradient spin‐echo sequence for improved oscillating gradient diffusion MRI

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Published in 2020 at "Magnetic Resonance in Medicine"

DOI: 10.1002/mrm.28401

Abstract: Oscillating gradient (OG) enables the access of short diffusion times for time‐dependent diffusion MRI (dMRI); however, it poses several technical challenges for clinical use. This study proposes a 3D oscillating gradient–prepared gradient spin‐echo (OGprep‐GRASE) sequence… read more here.

Keywords: prepared gradient; gradient spin; diffusion; oscillating gradient ... See more keywords
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Three‐dimensional gradient and spin‐echo readout for time‐encoded pseudo‐continuous arterial spin labeling: Influence of segmentation factor and flow compensation

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Published in 2021 at "Magnetic Resonance in Medicine"

DOI: 10.1002/mrm.28807

Abstract: To monitor the complete passage of the labeled blood through the vascular tree into tissue and improve the quantification of ASL maps, we evaluated the effect of 3D gradient and spin‐echo (GRASE) readout segments on… read more here.

Keywords: pseudo continuous; gradient spin; encoded pseudo; time encoded ... See more keywords
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Validation of surface‐to‐volume ratio measurements derived from oscillating gradient spin echo on a clinical scanner using anisotropic fiber phantoms

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Published in 2017 at "NMR in Biomedicine"

DOI: 10.1002/nbm.3708

Abstract: A diffusion measurement in the short‐time surface‐to‐volume ratio (S/V) limit (Mitra et al., Phys Rev Lett. 1992;68:3555) can disentangle the free diffusion coefficient from geometric restrictions to diffusion. Biophysical parameters, such as the S/V of… read more here.

Keywords: fiber; spin echo; diffusion; gradient spin ... See more keywords
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Probing neural tissues at small scales: Recent progress of oscillating gradient spin echo (OGSE) neuroimaging in humans

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Published in 2021 at "Journal of Neuroscience Methods"

DOI: 10.1016/j.jneumeth.2020.109024

Abstract: The detection sensitivity of diffusion MRI (dMRI) is dependent on diffusion times. A shorter diffusion time can increase the sensitivity to smaller length scales. However, the conventional dMRI uses the pulse gradient spin echo (PGSE)… read more here.

Keywords: ogse sequence; gradient spin; diffusion; spin echo ... See more keywords
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Diffusion time dependency along the human corpus callosum and exploration of age and sex differences as assessed by oscillating gradient spin-echo diffusion tensor imaging

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Published in 2020 at "NeuroImage"

DOI: 10.1016/j.neuroimage.2020.116533

Abstract: Conventional diffusion imaging uses pulsed gradient spin echo (PGSE) waveforms with diffusion times of tens of milliseconds (ms) to infer differences of white matter microstructure. The combined use of these long diffusion times with short… read more here.

Keywords: difference; gradient spin; diffusion; ogse pgse ... See more keywords
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Influence of Diffusion Time on the Diffusion Coefficients of Gases in Polymers Determined by Pulsed Gradient Spin Echo NMR

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Published in 2018 at "Macromolecules"

DOI: 10.1021/acs.macromol.8b02107

Abstract: The diffusive behavior of pure and mixed 13CO2, methane, and ethylene in poly(4,4′-hexafluoroisopropylidene diphthalic anhydride-2,3,5,6-tetramethyl-1,4-phenylenediamine) membranes is investigated using a pulsed gradient spin echo NMR method. Also, proton and 13C spin–lattice and spin–spin relaxation times… read more here.

Keywords: pulsed gradient; gradient spin; diffusion; spin ... See more keywords
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Gradient- and spin-echo (GRASE) MR imaging: a long-existing technology that may find wide applications in modern era.

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Published in 2019 at "Quantitative imaging in medicine and surgery"

DOI: 10.21037/qims.2019.09.13

Abstract: There are plenty of technical innovations that were regarded in early days as certainly impractical during initial usage, yet later proved to become the predominant method of choice in certain applications after key improvements of… read more here.

Keywords: gradient spin; echo grase; imaging long; long existing ... See more keywords
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Diffusion Tensor Imaging of Skeletal Muscle Contraction Using Oscillating Gradient Spin Echo

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Published in 2021 at "Frontiers in Neurology"

DOI: 10.3389/fneur.2021.608549

Abstract: Diffusion tensor imaging (DTI) measures water diffusion in skeletal muscle tissue and allows for muscle assessment in a broad range of neuromuscular diseases. However, current DTI measurements, typically performed using pulsed gradient spin echo (PGSE)… read more here.

Keywords: skeletal muscle; gradient spin; diffusion; muscle ... See more keywords