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

Survey Safety01:28

Survey Safety

302
Surveying near highways, rough terrain, or power lines involves significant risks. Working along highways is particularly dangerous and requires the use of warning signs and flagmen. It is safest to avoid working directly on roads and use offsets whenever possible. When highway work is unavoidable, it must follow all safety guidelines. Surveyors should wear bright clothing, such as orange reflective vests, to ensure visibility to motorists, coworkers, and hunters. In construction zones, wearing...
302
Personal Protective Equipment01:20

Personal Protective Equipment

2.0K
Personal protective equipment (PPE) is unique clothing or equipment worn by an employee to minimize or prevent exposure to infectious agents. PPE creates a barrier between the employee and the infectious materials. PPE must be readily available in the patient care area. PPE includes gloves, gowns and aprons, masks and respirators, goggles, face shields, shoes, and headcovers:
2.0K
Household Wiring And Electrical Safety01:13

Household Wiring And Electrical Safety

1.5K
Companies that supply power to most modern households use three conductors, typically called a three-wire line. While one is neutral, the other two are both at 120 V but with opposite polarity, giving a voltage of 240 V between them. With a three-wire line, high-power appliances that require 240 V, such as electric stoves and clothes dryers, are linked between the two hot lines. 120 V appliances can be connected between the neutral and either of the hot lines. The neutral side, which is always...
1.5K
Hazard Rate01:11

Hazard Rate

318
The hazard rate, also known as the hazard function or failure rate, is a statistical measure used to describe the instantaneous rate at which an event occurs, given that the event has not yet happened. From a probabilistic perspective, it represents the likelihood that a subject will experience the event in a very small time interval, conditional on surviving up to the beginning of that interval. In terms of frequency, the hazard rate can be viewed as the ratio of the number of events to the...
318
Radial System Protection01:23

Radial System Protection

364
Radial systems employ time-delay overcurrent relays to reduce load interruptions. When a fault occurs, the nearest breaker opens first, while upstream breakers remain closed due to longer delay settings. This approach ensures minimal disruption to the rest of the system.
In a radial system with a fault downstream of the third breaker, ideally, only the third breaker will open, isolating the fault and interrupting the load connected beyond it. The second breaker has a longer delay setting,...
364
Design Consideration01:22

Design Consideration

457
Designing a structure involves a series of considerations, primarily the material's ultimate strength, calculated through tests that measure changes under increased force until the material reaches its breaking point or limit. The ultimate load, where the material breaks, is divided by its original cross-sectional area, resulting in the ultimate normal stress or strength. The ultimate shearing stress is another significant factor taken into account.
The factor of safety is another key...
457

You might also read

Related Articles

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

Sort by
Same author

Real-time 3-T MRI of peroneal tendon motion during active ankle movement: feasibility and image quality.

European radiology experimental·2026
Same author

Swedish national recommendations for MR safety 2026.

Insights into imaging·2026
Same author

Effect of app-based mindfulness on extinction recall - a 7T-fMRI study.

Scientific reports·2026
Same author

Gray matter volume associations with clinical outcomes in epilepsy: A regional cohort study.

Epilepsy research·2026
Same author

Carotid endarterectomy with active extracorporeal perfusion for bilateral ocular ischemic syndrome in a patient with a preoperatively defined critical single-vessel cerebral supply on four-dimensional flow magnetic resonance imaging.

Journal of vascular surgery cases and innovative techniques·2026
Same author

Modeling the Intermediate Flow Regime in Flow-Compensated Intravoxel Incoherent Motion MRI.

Magnetic resonance in medicine·2026
Same journal

A Quantitative Modification of VI-RADS for Bladder Cancer at the Ureteral Orifice: A Reader Study on MRI With Varying Experience Levels.

Journal of magnetic resonance imaging : JMRI·2026
Same journal

Structural MRI Volumetry Index for Differentiation of Progressive Supranuclear Palsy From Parkinson's Disease and Multiple System Atrophy by Automatic Segmentation: A Comparison With Magnetic Resonance Parkinsonism Index.

Journal of magnetic resonance imaging : JMRI·2026
Same journal

Integrating nnU-Net Segmentation and Clinical-Radiomics for Multicenter MRI-Based Assessment of Soft Tissue Sarcoma Grade and Ki-67 Expression.

Journal of magnetic resonance imaging : JMRI·2026
Same journal

Optimization of Respiratory Training Methods for Cardiac Magnetic Resonance Imaging.

Journal of magnetic resonance imaging : JMRI·2026
Same journal

Multiparametric Quantitative MRI of Peripheral Nerves to Differentiate Demyelinating From Axonal Polyneuropathies.

Journal of magnetic resonance imaging : JMRI·2026
Same journal

Mapping Fatty Acid Composition in the Human Knee: Short-Term Repeatability at 3T.

Journal of magnetic resonance imaging : JMRI·2026
See all related articles

Related Experiment Video

Updated: Dec 11, 2025

Magnetic Resonance Imaging of Multiple Sclerosis at 7.0 Tesla
08:51

Magnetic Resonance Imaging of Multiple Sclerosis at 7.0 Tesla

Published on: February 19, 2021

9.5K

7T MR Safety.

Andrew J Fagan1, Andreas K Bitz2, Isabella M Björkman-Burtscher3

  • 1Department of Radiology, Mayo Clinic, Rochester, Minnesota, USA.

Journal of Magnetic Resonance Imaging : JMRI
|August 25, 2020
PubMed
Summary
This summary is machine-generated.

Ultrahigh-field Magnetic Resonance Imaging/Spectroscopy (MRI/MRS) at 7 Tesla offers enhanced resolution but requires careful safety considerations. This guide assists researchers and clinicians in navigating the risks associated with 7T MRI/MRS technology.

Keywords:
7Tesla MRI/MRS safetySARimplantsnumerical simulationsparallel transmissionradiofrequency coils

More Related Videos

Cardiac Magnetic Resonance Imaging at 7 Tesla
09:14

Cardiac Magnetic Resonance Imaging at 7 Tesla

Published on: January 6, 2019

12.0K
Radiotracer Administration for High Temporal Resolution Positron Emission Tomography of the Human Brain: Application to FDG-fPET
09:03

Radiotracer Administration for High Temporal Resolution Positron Emission Tomography of the Human Brain: Application to FDG-fPET

Published on: October 22, 2019

10.7K

Related Experiment Videos

Last Updated: Dec 11, 2025

Magnetic Resonance Imaging of Multiple Sclerosis at 7.0 Tesla
08:51

Magnetic Resonance Imaging of Multiple Sclerosis at 7.0 Tesla

Published on: February 19, 2021

9.5K
Cardiac Magnetic Resonance Imaging at 7 Tesla
09:14

Cardiac Magnetic Resonance Imaging at 7 Tesla

Published on: January 6, 2019

12.0K
Radiotracer Administration for High Temporal Resolution Positron Emission Tomography of the Human Brain: Application to FDG-fPET
09:03

Radiotracer Administration for High Temporal Resolution Positron Emission Tomography of the Human Brain: Application to FDG-fPET

Published on: October 22, 2019

10.7K

Area of Science:

  • Medical Imaging Physics
  • Biomedical Engineering
  • Radiological Safety

Background:

  • 7 Tesla (7T) Magnetic Resonance Imaging/Spectroscopy (MRI/MRS) represents a significant technological advancement, offering superior spatial, spectral, and contrast resolution.
  • The increased magnetic field strength and Larmor frequency in 7T MRI/MRS introduce novel safety concerns, including enhanced bioeffects and risks associated with conductive implants.
  • Regulatory clearance for 7T diagnostic imaging necessitates increased awareness and preparedness, especially in clinical settings with limited prior ultrahigh-field experience.

Purpose of the Study:

  • To provide a comprehensive reference document for the safe operation of 7T MRI/MRS systems.
  • To assist institutions in developing specific local policies and procedures for 7T MRI/MRS safety.
  • To support the expanded research and clinical use of 7T MRI/MRS by detailing current technology and physics.

Main Methods:

  • Review of current 7T MRI/MRS technology and underlying physics.
  • Identification of safety concerns, including bioeffects and implant interactions.
  • Analysis of knowledge gaps requiring further research and development.

Main Results:

  • 7T MRI/MRS provides enhanced imaging capabilities but poses safety challenges due to higher magnetic fields and frequencies.
  • Increased risk of transient bioeffects and adverse events with conductive implants at 7T.
  • Need for informed risk/benefit analyses, particularly when 7T safety data for implants is unavailable.

Conclusions:

  • Safe implementation of 7T MRI/MRS requires a thorough understanding of its technology and associated risks.
  • Development of institutional policies is crucial for managing safety concerns and ensuring responsible use.
  • Further research is needed to address current knowledge gaps and ensure the continued safe advancement of 7T MRI/MRS technology.