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MRI    
核磁共振成象

核磁共振成象

MRI
n 1: the use of nuclear magnetic resonance of protons to produce
proton density images [synonym: {magnetic resonance imaging},
{MRI}]

magnetic resonance imaging \mag*net"ic res"on*ance im"ag*ing\ n.
(Medicine)
a medical diagnostic procedure utilizing the phenomenon of
{nuclear magnetic resonance} to generate images of internal
parts of the body. It depends on the differential absorption
of electromagnetic radiation by different types of living
tissue in a magnetic field. It is complementary to X-ray
imaging in that the softer tissue show more prominently in
magnetic resonance images, rather than bone, as with X-rays.
It is a non-invasive procedure, allowing such images to be
obtained without penetration of the tissue by objects. It is
abbreviated {MRI}. As with {computerized tomography}, the
results are usually presented as images of sequential planar
sections of that part of the body of concern to the
physician.
[PJC]


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  • MRI - Mayo Clinic
    Magnetic resonance imaging (MRI) is a medical imaging technique that uses a magnetic field and computer-generated radio waves to create detailed images of the organs and tissues in your body Most MRI machines are large, tube-shaped magnets
  • What Is an MRI (Magnetic Resonance Imaging) Scan? - WebMD
    An MRI (magnetic resonance imaging) is a common test that lets doctors see inside your body Find out how they use it and how to prepare for an MRI
  • Magnetic resonance imaging - Wikipedia
    Magnetic resonance imaging (MRI) is a medical imaging technique used in radiology to generate pictures of the anatomy and the physiological processes inside the body MRI scanners use strong magnetic fields, magnetic field gradients, and radio waves to form images of the organs in the body
  • MRI (Magnetic Resonance Imaging): What It Is Results - Cleveland Clinic
    An MRI (magnetic resonance imaging) scan is a test that creates clear images of the structures inside your body using a large magnet, radio waves and a computer Healthcare providers use MRIs to evaluate, diagnose and monitor several different medical conditions Contents What is an MRI? Test Details Results and Follow-Up What is an MRI?
  • MRI Scan: Prep, What to Expect, Side Effects | UCSF Radiology
    Prepare for Magnetic Resonance Imaging (MRI) An MRI exam captures detailed internal images of a specified part of your body to help your doctor learn more about your condition
  • Magnetic Resonance Imaging (MRI) - Johns Hopkins Medicine
    Magnetic resonance imaging, or MRI, is a noninvasive medical imaging test that produces detailed images of almost every internal structure in the human body, including the organs, bones, muscles and blood vessels MRI scanners create images of the body using a large magnet and radio waves
  • Magnetic Resonance Imaging (MRI): Uses, Procedure, Results
    Magnetic resonance imaging (MRI) is a pain-free, noninvasive medical test used to produce two- or three-dimensional images of the structures inside your body using a strong magnetic field and radio waves
  • How Does an MRI Machine Work? - NIST
    The MRI machine then uses a radiofrequency pulse of invisible light to tip the protons’ bar magnets out of this alignment For the tipping to work correctly, this radio wave must have a particular frequency, which depends on the basic properties of the protons This frequency matching is the “resonance” in MRI
  • MRI Scan: Purpose, Preparation, Risks, and Results - Health
    A magnetic resonance imaging (MRI) scan is a painless medical imaging procedure that uses a strong magnetic field and radio waves to generate images of the body Unlike imaging tests such
  • MRI Scans: Definition, uses, and procedure - Medical News Today
    What is an MRI scan? A magnetic resonance imaging (MRI) scan uses a strong magnetic field and radio waves to create detailed images of the organs and tissues within the body MRI can help





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