MRI

(noun)

Magnetic resonance imaging (MRI) is a medical imaging technique used in radiology to visualize internal structures of the body in detail.

Related Terms

Examples of MRI in the following topics:

  • Medical Imaging

    • A magnetic resonance imaging instrument (MRI), or "nuclear magnetic resonance (NMR) imaging" scanner as it was originally known, uses powerful magnets to polarize and excite hydrogen nuclei (single proton) in water molecules in human tissue, producing a detectable signal which is spatially encoded, resulting in images of the body scanner .
    • The MRI machine emits an RF (radio frequency) pulse that specifically binds only to hydrogen.
    • This is the "resonance" part of MRI.
    • While it may provide less anatomical detail than techniques such as CT or MRI it studies the function of moving structures in real-time, emits no ionizing radiation, and contains speckle that can be used in elastography.
    • A magnetic resonance imaging instrument (MRI scanner), or "nuclear magnetic resonance (NMR) imaging" scanner as it was originally known, uses powerful magnets to polarize and excite hydrogen nuclei (single proton) in water molecules in human tissue, producing a detectable signal which is spatially encoded, resulting in images of the body.

  • Grey and White Matter

    • This MRI highlights the location of white matter in the brain.

  • Impingement Syndrome

    • Ultrasonography, arthrography, and MRI can be used to detect rotator cuff muscle pathology .
    • MRI showing subacromial impingement with partial rupture of the supraspinatus tendon.

  • Pelvimetry

    • Pelvimetry can also be done by radiography and MRI.

  • Amyotrophic Lateral Sclerosis

    • MRI (parasagittal FLAIR) demonstrates increased T2 signal within the posterior part of the internal capsule and can be tracked to the subcortical white matter of the motor cortex, outlining the corticospinal tract), consistent with the clinical diagnosis of ALS.

  • Plantar Fasciitis

    • The doctor may decide to use imaging studies like radiographs (X-rays), diagnostic ultrasound, and MRI.

  • Spinal Cord Compression

    • Diagnosis is by x-rays, but preferably magnetic resonance imaging (MRI) of the whole spine.

  • Medulla Injury

    • MRI image showing an acute infarct in the left dorsal lateral medulla.

  • Herniated (Slipped) Disc

    • MRI Scan of lumbar disc herniation between fourth and fifth lumbar vertebral bodies.

  • Body Planes and Sections

    • Medical imaging techniques such as sonography, CT scans, MRI scans, or PET scans are one of the primary applications of body planes.