Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

vGRASE: separating phase and T(2) modulations in 2D.

K Oshio1

  • 1Department of Radiology, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA.

Magnetic Resonance in Medicine
|September 7, 2000
PubMed
Summary
This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

(Z,Z)-5,27-Tritriacontadiene: Major sex pheromone ofDrosophila pallidosa (Diptera; Drosophilidae).

Journal of chemical ecology·2013
Same author

Expression of aquaporin water channels in mouse spinal cord.

Neuroscience·2004
Same author

Aquaporin-1 expression in human glial tumors suggests a potential novel therapeutic target for tumor-associated edema.

Acta neurochirurgica. Supplement·2004
Same author

Aquaporin-1 deletion reduces osmotic water permeability and cerebrospinal fluid production.

Acta neurochirurgica. Supplement·2004
Same author

[Fatty liver quantification with line scan echo planar spectroscopic imaging (LSEPSI)].

Nihon Igaku Hoshasen Gakkai zasshi. Nippon acta radiologica·2002
Same author

Relaxation effects of clustered particles.

Journal of magnetic resonance imaging : JMRI·2001
Same journal

A Comparison of Tissue Property Values Estimated Using Conventional Cardiac MRF and MT-Cardiac MRF.

Magnetic resonance in medicine·2026
Same journal

Dependence of the Extra-Cellular Diffusion Coefficient on the Fractions of Neurites and Cell Bodies in Gray Matter.

Magnetic resonance in medicine·2026
Same journal

Triple-Pulse <sup>23</sup>Na MRI Sequence (TriNa) for Simultaneous Acquisition of Spin-Density-Weighted and Fluid-Attenuated Images.

Magnetic resonance in medicine·2026
Same journal

Evaluation of Phantom Doping Materials in Quantitative Susceptibility Mapping.

Magnetic resonance in medicine·2026
Same journal

Design of an 8-Channel Transmit 32-Channel Receive 11.7T Head Coil and Evaluation of SNR Gains.

Magnetic resonance in medicine·2026
Same journal

The Potential for Absolute Temperature Imaging Based on Brain Metabolites Using an FID-Shifting Approach in Gradient Echo Planar Spectroscopic Imaging (GREPSI).

Magnetic resonance in medicine·2026
See all related articles

A new fast imaging technique, variable k-space sampling with Gradient Echo Refocused Spin Echo (vGRASE), significantly reduces ghosting artifacts. This advanced method improves image quality on clinical scanners compared to existing techniques.

Area of Science:

  • Magnetic Resonance Imaging (MRI)
  • Medical Imaging Technology

Background:

  • Gradient Echo Refocused Spin Echo (GRASE) is a fast MRI technique.
  • GRASE sequences suffer from T(2) modulation ghosting artifacts, limiting image quality.
  • Existing techniques like RARE and EPI have their own limitations.

Purpose of the Study:

  • To design and implement a novel fast MRI technique, variable k-space sampling with Gradient Echo Refocused Spin Echo (vGRASE).
  • To address and reduce the T(2) modulation ghosting artifacts inherent in GRASE sequences.
  • To evaluate the image quality improvements offered by vGRASE on a clinical imager.

Main Methods:

  • Development of the vGRASE imaging scheme.
  • Implementation of vGRASE on a clinical MRI scanner.

Related Experiment Videos

  • Separation of phase and T(2) modulations into distinct encoding directions within the vGRASE sequence.

    • Main Results:

    • The vGRASE technique successfully reduced T(2) modulation ghosting artifacts.
    • vGRASE demonstrated significantly improved image quality compared to standard GRASE.
    • The advantages of vGRASE over RARE and EPI were maintained.

    Conclusions:

    • vGRASE is a viable fast imaging technique for clinical MRI.
    • The novel encoding strategy effectively mitigates ghosting artifacts.
    • vGRASE offers superior image quality with comparable speed to GRASE.