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 Concept Videos

Assessment of Diffusion and Perfusion01:17

Assessment of Diffusion and Perfusion

2.0K
Understanding and evaluating diffusion and perfusion is critical in assessing a patient's respiratory and circulatory health. These processes play key roles in maintaining the body's internal environment, ensuring that tissues receive adequate oxygen while waste products are efficiently removed.
The Role of Diffusion in Respiration
Diffusion is the process by which molecules move from an area of higher concentration to an area of lower concentration. In the respiratory system, this...
2.0K
Magnetic Resonance Imaging01:24

Magnetic Resonance Imaging

10.4K
Magnetic resonance imaging (MRI) is a noninvasive medical imaging technique based on a phenomenon of nuclear physics discovered in the 1930s, in which matter exposed to magnetic fields and radio waves was found to emit radio signals. In 1970, a physician and researcher named Raymond Damadian noticed that malignant (cancerous) tissue gave off different signals than normal body tissue. He applied for a patent for the first MRI scanning device in clinical use by the early 1980s. The early MRI...
10.4K
Radiological Investigation II: MRI and Ventilation Perfusion Scan01:30

Radiological Investigation II: MRI and Ventilation Perfusion Scan

872
Description
Magnetic Resonance Imaging (MRI) and Ventilation Perfusion Scans are two radiological investigations that offer detailed diagnostic images of the body, particularly lung structures.
MRI
MRI uses magnetic fields and radiofrequency signals to distinguish between normal and abnormal tissues. This technology provides a more detailed diagnostic image than CT scans, enabling it to characterize pulmonary nodules, stage bronchogenic carcinoma, and evaluate inflammatory activity in...
872
Imaging Studies IV: Magnetic Resonance Imaging01:27

Imaging Studies IV: Magnetic Resonance Imaging

363
Introduction:Magnetic Resonance Imaging, or MRI, can include a specialized imaging technique of the urinary system known as Magnetic Resonance Urography (MRU). This radiation-free technique uses strong magnetic fields and radio waves to produce detailed images with the help of a computer. MRU is particularly effective for visualizing fluid-filled structures like the kidneys, ureters, and bladder.Applications of MRI in the Genitourinary SystemKidneys and Ureters: MRI detects tumors, cysts,...
363
Diffusion01:12

Diffusion

230.8K
Diffusion is the passive movement of substances down their concentration gradients—requiring no expenditure of cellular energy. Substances, such as molecules or ions, diffuse from an area of high concentration to an area of low concentration in the cytosol or across membranes. Eventually, the concentration will even out, with the substance moving randomly but causing no net change in concentration. Such a state is called dynamic equilibrium, which is essential for maintaining overall...
230.8K

You might also read

Related Articles

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

Sort by
Same author

Synthesis of β-D-Ara-(1 → 2)-α-D-Ara-(1 → 5)-α-D-Ara trisaccharides as 2-azidoethyl and 4-(2-trifluoroacetamidoethoxy)phenyl glycosides related to the fragments of mycobacterial polysaccharides.

Carbohydrate research·2026
Same author

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

Magnetic resonance in medicine·2026
Same author

Zero-Shot Self-Supervised Learning of Single Breath-Hold Magnetic Resonance Cholangiopancreatography (MRCP) Reconstruction.

Magnetic resonance in medicine·2026
Same author

Leveraging electronic health record data for precision medicine insights: the precision medicine registry at NYU Langone Health.

npj health systems·2026
Same author

Introducing a translationally relevant mouse model of radiosurgery-induced unilateral hearing loss.

Frontiers in neuroscience·2026
Same author

Geometry of the cumulant series in diffusion MRI.

Nature communications·2026

Related Experiment Video

Updated: Apr 5, 2026

Diffusion Imaging in the Rat Cervical Spinal Cord
10:46

Diffusion Imaging in the Rat Cervical Spinal Cord

Published on: April 7, 2015

12.3K

Gibbs ringing in diffusion MRI.

Jelle Veraart1,2, Els Fieremans1, Ileana O Jelescu1

  • 1Center for Biomedical Imaging, Department of Radiology, New York University School of Medicine, New York, USA.

Magnetic Resonance in Medicine
|August 11, 2015
PubMed
Summary
This summary is machine-generated.

This study reduces Gibbs ringing artifacts in diffusion MRI by extrapolating k-space data. This improves the accuracy of diffusion parameter quantification without sacrificing image resolution.

Keywords:
diffusion kurtosis imagingdiffusion tensor imagingextrapolationtotal variationtruncation artifact

More Related Videos

Co-analysis of Brain Structure and Function using fMRI and Diffusion-weighted Imaging
17:06

Co-analysis of Brain Structure and Function using fMRI and Diffusion-weighted Imaging

Published on: November 8, 2012

27.2K
Diffusion Tensor Magnetic Resonance Imaging in the Analysis of Neurodegenerative Diseases
09:33

Diffusion Tensor Magnetic Resonance Imaging in the Analysis of Neurodegenerative Diseases

Published on: July 28, 2013

29.5K

Related Experiment Videos

Last Updated: Apr 5, 2026

Diffusion Imaging in the Rat Cervical Spinal Cord
10:46

Diffusion Imaging in the Rat Cervical Spinal Cord

Published on: April 7, 2015

12.3K
Co-analysis of Brain Structure and Function using fMRI and Diffusion-weighted Imaging
17:06

Co-analysis of Brain Structure and Function using fMRI and Diffusion-weighted Imaging

Published on: November 8, 2012

27.2K
Diffusion Tensor Magnetic Resonance Imaging in the Analysis of Neurodegenerative Diseases
09:33

Diffusion Tensor Magnetic Resonance Imaging in the Analysis of Neurodegenerative Diseases

Published on: July 28, 2013

29.5K

Area of Science:

  • Magnetic Resonance Imaging
  • Diffusion MRI
  • Image Reconstruction

Background:

  • Gibbs ringing artifacts, common in MRI, affect diffusion parameter accuracy.
  • Quantification of diffusion models is sensitive to image artifacts.

Purpose of the Study:

  • To investigate and mitigate the impact of Gibbs ringing on diffusion MRI parameters.
  • To improve the accuracy of diffusion-based imaging analyses.

Main Methods:

  • K-space extrapolation using regularization terms to reduce Gibbs ringing.
  • Evaluation of various regularization terms and parameter tuning for optimal image reconstruction.
  • Comparison with standard window filtering methods.

Main Results:

  • Gibbs artifacts significantly impact diffusion parameter quantification, even at low diffusion weighting.
  • Second-order total generalized variation (TGV) effectively suppresses Gibbs ringing without staircasing.
  • Regularized k-space extrapolation reduces truncation artifacts and preserves spatial resolution.

Conclusions:

  • Regularized k-space extrapolation is superior to window filtering for artifact reduction.
  • Improved accuracy in diffusion tensor imaging (DTI) and diffusion kurtosis imaging (DKI) enables unconstrained model fitting.
  • This method enhances the reliability of diffusion MRI parameter estimation.