MRI

Examples of MRI in the following topics:

• NMR and MRIs

  • Magnetic resonance imaging (MRI), also called nuclear magnetic resonance imaging (NMRI) or magnetic resonance tomography (MRT), is a medical imaging technique used in radiology to visualize internal structures of the body in detail.
  • MRI utilized the property of nuclear magnetic resonance (NMR) to image the nuclei of atoms inside the body.
  • MRI machines (as pictured in ) make use of the fact that body tissue contains a large amount of water and therefore protons (1H nuclei), which get aligned in a large magnetic field.
  • MRI contrast agents may be injected intravenously to enhance the appearance of blood vessels, tumors or inflammation.
  • Unlike CT, MRI does not use ionizing radiation and is generally a very safe procedure.

• Brain Imaging Techniques

  • EEG, PET, MRI, and fMRI scan the brain through a variety of methods and have varying degrees of specificity and invasiveness.
  • Four of the most common types of brain scans are EEG, PET, MRI, and fMRI.
  • Magnetic resonance imaging (MRI) and functional magnetic resonance imaging (fMRI) scans are the form of neural imaging most directly useful to the field of psychology.
  • Through this process, an MRI creates an image of the brain structure.
  • The fMRI is a series of MRIs that measures both the structure and the functional activity of the brain through computer adaptation of multiple images.

• Biopsychology

  • Neuroimaging tools, such as functional magnetic resonance imaging (fMRI) scans, are often used to observe which areas of the brain are active during particular tasks in order to help psychologists understand the link between brain and behavior.
  • Magnetic resonance imaging (MRI) scans of the head are often used to help psychologists understand the links between brain and behavior.
  • Three types of scans include (left to right) PET scan (positron emission tomography), CT scan (computed tomography), and fMRI (functional magnetic resonance imaging).

• 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.

• References

  • ., & Paschler, H. (2009) Puzzlingly High Correlations in fMRI Studies of Emotion, Personality, and Social Cognition.

• Genetic Defects from Radiation

  • MRIs of a normal individual (left) and a patient with microcephaly (right).

• 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.

• Implications of Quantum Mechanics

  • Examples include the laser , the transistor (and thus the microchip), the electron microscope, and magnetic resonance imaging (MRI).