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Magnetic Resonance Imaging

That original machine, which now sits in the Smithsonian Institution, was a machine that helped to change the outlook of modern medicine, as we know it. .
             Many people through out the world probably have no idea what an MRI machine looks like. The basic design is a giant cube-like structure that is generally seven feet tall by seven feet wide by ten feet long. In the center of this cube, there is a horizontal table called a bore. (www.howstuffworks.com) The bore runs through the magnet from the front of the machine to the back. The person who is receiving the test lies on their back and depending on the exam will be slid in head first or feet first. The way the "body responds to those fields and how it relaxes when the magnetic field is removed is noted and sent to a computer along with information about where the interaction occurred." (www.heathcommunities.com) At the same time, radio wave pulses of energy can pick out a very small point inside the body of a patient and deceivers which type of tissue it is. The MRI system goes "through the patient's body point-by-point, building up a 2-D or 3-D map of tissue types." (www.wellnessweb.com) The displayed results in the end are images of slices or cross-sections of the body that give doctors and surgeons an unparalleled view inside of any human body. The slices can be taken n any plane chosen by the machine operator. The parts of the body such as fat have a high signal and are displayed with the color white. Other parts of the body such as air in the lungs are seen in the color black. Muscles and tendons generally show up in the color gray. (www.wellnessweb.com) The machine operators are able to change the parameters and that causes the tissue in the body to take on different appearances which is very helpful to doctors because it allows them to see if something is normal or not. The MRI gives doctors and surgeons an unbelievable view inside the human body with a level of detail that is extraordinary when compared to other imaging machines used by hospitals.


Essays Related to Magnetic Resonance Imaging

1. Advancements In Diagnostic Imaging Techniques Of The Brain

The first diagnostic imaging technique to be used, now considered somewhat extinct in the specialty of neurodiagnology was the x-ray. ... Upon further investigation it was discovered that the rays were not deflected by magnetic materials and in fact penetrated many kinds of materials. ... Cat scanners work by taking rotating slices of x-rays and transmitting them to computers creating the enhanced 3D image, the thinner the slice it is possible to produce a higher quality image and resolution (Garcia, Brian). ... Since MRI's do not use radiation as do x-rays and CAT scans , the image e...

  • Word Count: 3038
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  • Has Bibliography
  • Grade Level: Graduate

2. Applications of Electromagnetism

Some of the more significant uses of electromagnetism are such as in magnetic resonance imaging or MRI's. when a patient receives and MRI he/she is put into a large tube which is like a giant solenoid with super conducting wire and produces a very powerful magnetic field. ... With this, it is possible to produce a computer generated resonance image. These pictures can help doctors to come up with images that can accompany those that would be produced y an X-Ray. Television screens and computer monitors use solenoids to produce images by exerting magnetic forces on moving electrons also...

  • Word Count: 930
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3. The Physics of the MRI

The Physics of the MRI MRI, or the Magnetic Resonance Imaging, is a machine that doctors use that provides an unparalleled view inside the human body, using the physics of magnets and radio waves. ... The scan begins when the body part to be scanned is in the isocenter of the magnetic field of the machine. ... MRI first neutralizes the body by creating a steady magnetic field that is thirty thousand times stronger than the earth's own magnetic field. ... MRI has greatly advanced the ability to view human tissue, because it can generate images of any part of the body from any angle...

  • Word Count: 329
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  • Grade Level: High School

4. Brain-Imaging Studies Advanced Our Understanding

Mainly, neuroimaging is the study of all kinds of brain's image including all brain's scanners. ... The function neuroimaging techniques, PET (Positron Emission Temography) and fMRI (functional Magnetic Resonance Imaging), offer sufficient experimental result and efficient way of brain study. ... (Schacter, D.L., 1997, p.1693) However, brain-imaging techniques are still a very important way of studying brain's memory. ... Brain-imaging techniques are a study of visible brain. ... I"m strongly suggested that brain-imaging studies advanced our understanding of neural bases ...

  • Word Count: 1359
  • Approx Pages: 5
  • Has Bibliography
  • Grade Level: Undergraduate

5. The Human Brain and Methods of Discovery

These methods employ various scanners like the CT (computerized tomography), PET (positron emission tomography), MRI (magnetic resonance imaging) and SPECT (single photon emission computed tomography). ... MRI stands for magnetic resonance imaging. This scan uses magnetic fields, radio waves and computer enhancement to provide much better images of brain structure and function than CT scans. Once called nuclear magnetic resonance imaging, the "nuclear" was dropped off because of fears that people would think there was something radioactive involved, which there is not. ... A PET scans is...

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6. Electromagnets

This electricity, magnetizes the metal and creates a magnetic field, called an electromagnetic field, that can be harnessed for many uses. ... Using things like an MRI (magnetic Resonance Imaging) machine to look inside a patient and determine whether he or she is in need of surgery. ...

  • Word Count: 250
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  • Grade Level: High School

7. Cancer

Mammogram is one form of screening and testing a patient for breast cancer. A screening mammogram is an x-ray of the breast, used to detect breast changes in women who have no signs or symptoms of breast cancer. A colonoscopy is an examination of the rectum and entire colon using a lighted instrumen...

  • Word Count: 338
  • Approx Pages: 1
  • Grade Level: High School

8. Diagnostic Medical Sonography

Diagnostic Medical Sonography is becoming an increasingly attractive alternative to radiologic procedures such as X ray and magnetic resonance imaging (MRI). ... In diagnostic imaging, there are several different procedures that help the doctors when diagnosing ailments. ... Another common imaging method, magnetic resonance imaging (MRI), uses giant magnets and radio waves to create an image. However, Sonography uses sound waves to generate an image. ... The sonography profession is safer than other imaging methods because there is no use of radiation or radio waves. ...

  • Word Count: 1300
  • Approx Pages: 5
  • Has Bibliography

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