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

9.8K
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...
9.8K
The Electromagnetic Spectrum02:37

The Electromagnetic Spectrum

65.6K
The electromagnetic spectrum consists of all the types of electromagnetic radiation arranged according to their frequency and wavelength. Each of the various colors of visible light has specific frequencies and wavelengths associated with them, and you can see that visible light makes up only a small portion of the electromagnetic spectrum. Because the technologies developed to work in various parts of the electromagnetic spectrum are different, for reasons of convenience and historical...
65.6K
The Electromagnetic Spectrum01:24

The Electromagnetic Spectrum

33.8K
Electromagnetic waves are categorized according to their wavelengths and frequencies, giving the electromagnetic spectrum. These waves are classified as radio, infrared, ultraviolet, etc. Radio waves refer to electromagnetic radiation with wavelengths ranging from millimeters to kilometers. Radio waves are commonly used for audio communications (i.e., radios) and typically result from an alternating current in the wires of a broadcast antenna. They cover a broad wavelength range and are used...
33.8K
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
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
Purposive Learning01:22

Purposive Learning

518
E. C. Tolman emphasized the purposiveness of behavior — the idea that much of our behavior is goal-directed. For instance, employees who aim for a promotion work diligently to meet their targets. Tolman argued that when classical conditioning and operant conditioning occur, the organism acquires certain expectations. In classical conditioning, a child might fear a dog because they expect it to bite. In operant conditioning, a person might consistently work overtime because they expect a...
518

You might also read

Related Articles

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

Sort by
Same author

Nodular Transformation-driven Circulatory Remodeling in Biliary Atresia-induced Pediatric Biliary Cirrhosis: A Three-dimensional Phase-Contrast CT Rendering.

Radiology·2026
Same author

Myosteatosis as an independent predictor for all-cause and cardiac mortality in initial-dialysis patients: a multicenter, retrospective cohort study.

Frontiers in physiology·2025
Same author

Electrophotochemical Ce-Catalyzed Radical Truce-Smiles Rearrangement of Cycloalkanols.

Organic letters·2025
Same author

Hepatocellular carcinoma (HCC) and focal nodular hyperplasia (FNH) showing iso- or hyperintensity in the hepatobiliary phase: differentiation using Gd-EOB-DTPA enhanced MRI radiomics and deep learning features.

BMC medical imaging·2025
Same author

Accuracy and consistency of subtraction dual-layer spectral computed tomography in diagnosing coronary stenosis: invasive coronary angiography validation study.

Quantitative imaging in medicine and surgery·2025
Same author

Coronary imaging characteristics and risk factors in patients with type 2 diabetes mellitus with coronary heart disease complication.

World journal of diabetes·2025

Related Experiment Video

Updated: Feb 11, 2026

Magnetic Resonance Elastography Methodology for the Evaluation of Tissue Engineered Construct Growth
12:18

Magnetic Resonance Elastography Methodology for the Evaluation of Tissue Engineered Construct Growth

Published on: February 9, 2012

12.9K

A multi-purpose electromagnetic actuator for magnetic resonance elastography.

Yuan Feng1, Mo Zhu2, Suhao Qiu1

  • 1Institute for Medical Imaging Technology, School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China; Center for Molecular Imaging and Nuclear Medicine, School of Radiological and Interdisciplinary Sciences (RAD-X), Soochow University, Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Suzhou, Jiangsu 215123, China.

Magnetic Resonance Imaging
|April 22, 2018
PubMed
Summary

A new electromagnetic actuator for magnetic resonance elastography (MRE) offers a simple, portable solution for brain, abdomen, and phantom imaging. This device generates consistent mechanical waves, showing potential for diverse clinical applications.

Keywords:
BrainClinical applicationsElectromagneticLiverMR elastography

More Related Videos

Author Spotlight: Advancing Hepatic Fibrosis Diagnosis Using Magnetic Resonance Elastography and AI
06:09

Author Spotlight: Advancing Hepatic Fibrosis Diagnosis Using Magnetic Resonance Elastography and AI

Published on: July 21, 2023

2.0K
Aqueous Droplets Used as Enzymatic Microreactors and Their Electromagnetic Actuation
08:27

Aqueous Droplets Used as Enzymatic Microreactors and Their Electromagnetic Actuation

Published on: August 28, 2017

5.7K

Related Experiment Videos

Last Updated: Feb 11, 2026

Magnetic Resonance Elastography Methodology for the Evaluation of Tissue Engineered Construct Growth
12:18

Magnetic Resonance Elastography Methodology for the Evaluation of Tissue Engineered Construct Growth

Published on: February 9, 2012

12.9K
Author Spotlight: Advancing Hepatic Fibrosis Diagnosis Using Magnetic Resonance Elastography and AI
06:09

Author Spotlight: Advancing Hepatic Fibrosis Diagnosis Using Magnetic Resonance Elastography and AI

Published on: July 21, 2023

2.0K
Aqueous Droplets Used as Enzymatic Microreactors and Their Electromagnetic Actuation
08:27

Aqueous Droplets Used as Enzymatic Microreactors and Their Electromagnetic Actuation

Published on: August 28, 2017

5.7K

Area of Science:

  • Biomedical Engineering
  • Medical Imaging Physics

Background:

  • Magnetic Resonance Elastography (MRE) is a valuable technique for non-invasively assessing tissue stiffness.
  • Existing MRE actuation systems can be complex, bulky, and limited in application scope.

Purpose of the Study:

  • To design and evaluate a novel, simple, and portable electromagnetic actuator for MRE.
  • To demonstrate the actuator's capability across various imaging targets, including phantoms, brain, and liver.

Main Methods:

  • A custom electromagnetic actuator and control unit were developed for precise vibration frequency control and signal synchronization.
  • The actuator was integrated with specialized clamps and holders for different anatomical regions.
  • MRE experiments were conducted on gel phantoms, brain, and liver samples.

Main Results:

  • The actuator successfully produced stable and consistent mechanical waves in all tested MRE experiments.
  • Shear modulus estimations using the local frequency estimate method correlated well with established MRE findings.
  • The system demonstrated reliable performance across diverse imaging applications.

Conclusions:

  • The developed electromagnetic actuator is a simple, portable, and effective tool for MRE.
  • Its versatility and ease of use suggest significant potential for broad clinical adoption and research.
  • This actuator system can facilitate MRE studies in various settings, enhancing diagnostic capabilities.