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Related Concept Videos

Magnetic Fields01:27

Magnetic Fields

A moving charge or a current creates a magnetic field in the surrounding space, in addition to its electric field. The magnetic field exerts a force on any other moving charge or current that is present in the field. Like an electric field, the magnetic field is also a vector field. At any position, the direction of the magnetic field is defined as the direction in which the north pole of a compass needle points.
A magnetic field is defined by the force that a charged particle experiences...
Magnetic Resonance Imaging01:24

Magnetic Resonance Imaging

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...
Brain Imaging01:14

Brain Imaging

Brain imaging technologies provide critical insights into both the structure and function of the human brain, enabling medical professionals and researchers to diagnose, study, and treat neurological disorders or psychiatric disorders more effectively.
These technologies include computerized axial tomography (CAT or CT scans), positron-emission tomography (PET scans),  magnetic resonance imaging (MRI),  functional magnetic resonance imaging (fMRI), and Transcranial Magnetic Stimulation (TMS).
Ferromagnetism01:31

Ferromagnetism

Materials like iron, nickel, and cobalt consist of magnetic domains, within which the magnetic dipoles are arranged parallel to each other. The magnetic dipoles are rigidly aligned in the same direction within a domain by quantum mechanical coupling among the atoms. This coupling is so strong that even thermal agitation at room temperature cannot break it. The result is that each domain has a net dipole moment. However, some materials have weaker coupling, and are ferromagnetic at lower...

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Electric and Magnetic Field Devices for Stimulation of Biological Tissues
13:29

Electric and Magnetic Field Devices for Stimulation of Biological Tissues

Published on: May 15, 2021

Magnetic field therapy-does it affect soft tissue? *.

R Railton, P Newman

    The Journal of Orthopaedic and Sports Physical Therapy
    |January 1, 1983
    PubMed
    Summary
    This summary is machine-generated.

    Magnetic field therapy did not significantly improve peripheral circulation or tissue oxygenation in normal volunteers during a double-blind trial. The study found no measurable effects from recommended magnetic field configurations.

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    Area of Science:

    • Biomedical Engineering
    • Physiology
    • Sports Medicine

    Background:

    • Magnetic field therapy is claimed to enhance peripheral circulation and tissue oxygenation.
    • Evidence supporting these therapeutic claims requires rigorous scientific investigation.

    Purpose of the Study:

    • To objectively evaluate the efficacy of magnetic field therapy in improving peripheral circulation and tissue oxygenation.
    • To determine if magnetic fields, under specific configurations, influence physiological parameters related to blood flow and oxygen delivery.

    Main Methods:

    • A double-blind, placebo-controlled trial was conducted on normal volunteers.
    • Transcutaneous oxygen tension measurements were utilized to assess tissue oxygenation.
    • Skin temperature measurements were recorded to evaluate circulatory changes.

    Main Results:

    • No statistically significant differences in transcutaneous oxygen tension were observed between the magnetic field therapy group and the placebo group.
    • Skin temperature measurements also showed no significant changes attributable to the applied magnetic fields.
    • The study failed to demonstrate any physiological effects from the tested magnetic field configurations.

    Conclusions:

    • The tested magnetic field therapy configurations did not produce measurable improvements in peripheral circulation or tissue oxygenation in healthy individuals.
    • Further research may be needed to explore potential mechanisms or specific conditions where magnetic fields might have an effect, but current evidence is lacking.
    • This study does not support the therapeutic claims of magnetic field therapy for enhancing circulation and oxygenation based on the tested parameters.