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

Magnetic Resonance Imaging01:24

Magnetic Resonance Imaging

9.7K
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...
9.7K
Imaging Studies IV: Magnetic Resonance Imaging01:27

Imaging Studies IV: Magnetic Resonance Imaging

283
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,...
283
Atomic Nuclei: Magnetic Resonance01:05

Atomic Nuclei: Magnetic Resonance

1.2K
The number of nuclear spins aligned in the lower energy state is slightly greater than those in the higher energy state. In the presence of an external magnetic field, as the spins precess at the Larmor frequency, the excess population results in a net magnetization oriented along the z axis. When a pulse or a short burst of radio waves at the Larmor frequency is applied along the x axis, the coupling of frequencies causes resonance and flips the nuclear spins of the excess population from the...
1.2K
Voltammetric Techniques: Linear-Scan (E vs Time)01:12

Voltammetric Techniques: Linear-Scan (E vs Time)

1.3K
Polarography is a classical voltammetric technique used to analyze electrochemical reactions. This method applies a linear potential sweep to a dropping mercury electrode (DME), and the resulting current is measured. A dropping mercury electrode is commonly used as the working electrode in polarography. It consists of a capillary tube filled with mercury, where the tiny droplet forms at the tip. This droplet continuously drops from the capillary, creating a new electrode surface for each...
1.3K
Resonance02:52

Resonance

65.7K
The Lewis structure of a nitrite anion (NO2−) may actually be drawn in two different ways, distinguished by the locations of the N-O and N=O bonds.
65.7K
Nuclear Magnetic Resonance (NMR): Overview01:07

Nuclear Magnetic Resonance (NMR): Overview

7.0K
Nuclear magnetic resonance (NMR) is a phenomenon exhibited by certain nuclei that can absorb characteristic radio frequency radiation under certain conditions. NMR has been extensively applied in molecular spectroscopy and medical diagnostic imaging. In both these applications, the molecule or subject under study is placed in a magnetic field and irradiated with radio frequency energy.
NMR spectroscopy generates a spectrum where the characteristic absorption frequencies of the sample are...
7.0K

You might also read

Related Articles

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

Sort by
Same author

Excitation of delocalized long-lived states of aliphatic protons at low and high magnetic fields.

Magnetic resonance (Gottingen, Germany)·2026
Same author

Combining photo-CIDNP and long-lived spin states enables high-contrast detection of weak protein-ligand interactions.

Physical chemistry chemical physics : PCCP·2026
Same author

Long-lived states involving a manifold of fluorine-19 spins in fluorinated aliphatic chains.

Magnetic resonance (Gottingen, Germany)·2026
Same author

A fast sample shuttle to couple high and low magnetic fields and applications in high-resolution relaxometry.

Magnetic resonance (Gottingen, Germany)·2025
Same author

The SOFAST-HMBC-HMQC experiment for pairing geminal methyl groups in valine and leucine side-chains.

Journal of biomolecular NMR·2025
Same author

Hypershifted spin spectroscopy with dynamic nuclear polarization at 1.4 K.

Science advances·2024

Related Experiment Video

Updated: Feb 7, 2026

Multiple-mouse Neuroanatomical Magnetic Resonance Imaging
09:08

Multiple-mouse Neuroanatomical Magnetic Resonance Imaging

Published on: February 27, 2011

16.4K

Advances in single-scan time-encoding magnetic resonance imaging.

Sina Marhabaie1, Geoffrey Bodenhausen2, Philippe Pelupessy2

  • 1Laboratoire des biomolécules, LBM, Département de chimie, École normale supérieure, PSL University, Sorbonne Université, CNRS, 75005, Paris, France. sina.marhabaie@ens.fr.

Scientific Reports
|July 20, 2018
PubMed
Summary

Time-encoding MRI offers advantages over traditional methods. This study enhances the technique by modifying echo timing and gradient switching for reduced signal loss and improved spatial resolution in magnetic resonance imaging.

More Related Videos

Cardiac Magnetic Resonance Imaging at 7 Tesla
09:14

Cardiac Magnetic Resonance Imaging at 7 Tesla

Published on: January 6, 2019

12.3K
Multianimal Magnetic Resonance Imaging for Tumor Measurements in Pancreatic Cancer Mouse Models
09:18

Multianimal Magnetic Resonance Imaging for Tumor Measurements in Pancreatic Cancer Mouse Models

Published on: February 3, 2026

59

Related Experiment Videos

Last Updated: Feb 7, 2026

Multiple-mouse Neuroanatomical Magnetic Resonance Imaging
09:08

Multiple-mouse Neuroanatomical Magnetic Resonance Imaging

Published on: February 27, 2011

16.4K
Cardiac Magnetic Resonance Imaging at 7 Tesla
09:14

Cardiac Magnetic Resonance Imaging at 7 Tesla

Published on: January 6, 2019

12.3K
Multianimal Magnetic Resonance Imaging for Tumor Measurements in Pancreatic Cancer Mouse Models
09:18

Multianimal Magnetic Resonance Imaging for Tumor Measurements in Pancreatic Cancer Mouse Models

Published on: February 3, 2026

59

Area of Science:

  • Magnetic Resonance Imaging (MRI)
  • Medical Physics
  • Biomedical Engineering

Background:

  • Traditional single-scan Fourier methods in MRI, like echo planar imaging (EPI), have limitations.
  • Time-encoding MRI is a single-scan technique utilizing k-encoding in one direction and time-encoding in the orthogonal direction.
  • The original time-encoding sequence has drawbacks that restrict its clinical applications.

Purpose of the Study:

  • To improve the performance and expand the applications of time-encoding MRI.
  • To address limitations of the original time-encoding sequence.
  • To enhance signal quality and spatial resolution in MRI scans.

Main Methods:

  • Implementation of an additional gradient pulse to equalize echo times for all echoes.
  • Rearrangement of positive and negative gradients to decrease gradient switching rates.
  • Adoption of an interleaved implementation strategy for time-encoding sequences.

Main Results:

  • Achieved uniform signal attenuation by equalizing echo times, reducing diffusion-related signal loss.
  • Reduced average signal attenuation due to diffusion.
  • Decreased gradient switching rates through gradient rearrangement.
  • Minimized signal attenuation from transverse relaxation and diffusion via interleaved sequences.
  • Increased overall spatial resolution.

Conclusions:

  • The proposed modifications significantly enhance time-encoding MRI capabilities.
  • These improvements lead to better image quality and broader applicability of the technique.
  • The optimized time-encoding MRI offers a more robust and efficient alternative for various imaging needs.