Preview
Preview

Magnetic Resonance Imaging Essay

:: 3 Works Cited
Length: 924 words (2.6 double-spaced pages)
Rating: Yellow      
Open Document
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Magnetic Resonance Imaging


Magnetic resonance imaging has the potential of totally replacing computed tomography. If history was rewritten, and CT invented after MRI, nobody would bother to pursue CT. --Philip Drew (Mattson and Simon, 1996)

WHAT IT IS

Magnetic Resonance Imaging, or commonly known as MRI, is a technique used in medicine for producing images of tissues inside the body. It is an important diagnostic tool because it enables physicians to identify abnormal tissue without opening the body through surgery. MRI lets physicians see through bones and organs. MRI does not expose the patient to radiation, unlike tests that use X-rays. MRI provides an unparallel view inside the human body. It is the method of choice for the diagnosis of certain diseases, disorders, and injuries. MRI is safe for most people, but it uses a powerful magnet and so cannot be used on people with metal implants, such as pacemakers or artificial joints (World Book, 2000).

WHAT IT IS LIKE INSIDE

Three main components make up an MRI unit: a magnet, devices for transmitting and receiving radio waves, and a computer. The patient is placed inside a machine that has a huge magnet. There is a horizontal tube running through the magnet from front to back. This tube is known as the bore of the magnet. The patient, lying on his or her back, slides into the bore on a special table. Once the body part to be scanned is in the exact center or isocenter of the magnetic field, the scan can begin (www.howstuffworks.com). The magnetic field causes the nuclei of certain atoms inside the body to line up. The machine then sends out a radio signal, which causes the nuclei to change direction. The change create signals that a computer translates to produce ...


... middle of paper ...


...ams are also very expensive. (www.howstuffworks.com)

For most patients, the numerous benefits of MRI far outweigh the drawbacks. MRI can provide you with an abundant amount of information about your health.MRI is a tool to diagnose, visualize, amd evaluate parts of our body. MRI can help prevent the spread of diseases by catching them in their early stages, and so still treatable. Staying healthy is probably the most important thing that we can do. Medical technology, such as MRI, can help us do that.

Sources:

Lauterbur, Paul C., and Liang, Zhi-Pei, Principles of Magnetic Resonance Imaging, IEEE Press, New York, 2000, p. 2-4.

Mattson, James, and Simon, Merrill,The Story of MRI, Bar-Ilan University Press, New York, 1996, p. 1.

World Book Encyclopedia, Magnetic Resonance Imaging, World Book Inc., Chicago, Vol 13, 2000, p. 56-57.
www.howstuffworks.com


Click the button above to view the complete essay, speech, term paper, or research paper








This essay is 100% guaranteed.


Title Length Color Rating  
Magnetic Resonance Imaging Scanners Essay - Magnetic Resonance Imaging (MRI) Scanners: What you need to know about Magnetic Resonance Imaging (MRI) Scanners The first Magnetic Resonance Imaging Scanner examination was performed on a human being in the year 1997. Magnetic Resonance Imaging Scanners also known as MRI Scanners are used worldwide for the benefit of people who need the interior of their bodies observed by professionals.MRI Scanners can create images by converting mathematical date into an image that professionals will examine, and will then further explain the results to the patient....   [tags: interior, heart structures, ] 982 words
(2.8 pages)
Strong Essays [preview]
Essay Functional Magnetic Resonance Imaging - Imagine that you have some rare disease, you have suddenly lost some of your fine motor control, you sometimes have bouts of unintentional movement, and you feel that you are not in control of your own body at times. You have no idea what is going on, your family is stunned, and the doctors are stumped. No one seems to have a firm understanding of how or why these things are happening to you. Your doctors recommend that you undergo a relatively new procedure called fMRI. This test indicates that you have an operable tumor pressing against your cerebellum....   [tags: Technology, Mapping the Brains Activity] 1221 words
(3.5 pages)
Good Essays [preview]
Functional Magnetic Resonance Imaging Essays - Functional Magnetic Resonance Imaging (fMRI),which is one of the most exciting recent developments in biomedical magnetic resonance imaging, allows the non-invasive visualisation of human brain function(1). Functional MRI is a measurement technique based on ultrafast MR imaging sequences that are sensitive to the physiological changes of cerebral blood flow (CBF) and cerebral blood volume (CBV).These allow the researcher to measure changes in brain function typically via increases or decreases in blood oxygenation during the scanning(2)....   [tags: Technology ]
:: 13 Works Cited
915 words
(2.6 pages)
Better Essays [preview]
Magnetic Resonance Imaging Essays - ... An advantage of MRI scanners is that it can view images from any plane and angle How MRI scanners affects our way of life Today’s society is clearly active in sports, and also participates actively in vascular diseases, muscle disorders, and any bodily problem to that matter. In other words, people who receive MRI scans are not unique, since these scans are performed quite often due to problems with tissues in the body. This could be due to the intensity of playing sports, to simply getting older....   [tags: medical diagnosis applications] 739 words
(2.1 pages)
Better Essays [preview]
Magnetic Resonance Imaging Great Helps Medicine Essays - ... The information found included articles regarding its advantages, disadvantages, facts, and how it is used. FINDINGS The machine is a 100% accurate method of disease detection throughout the body and is most often used after other testing methods have failed to provide sufficient information to confirm a patient’s diagnosis. According to journalist Mary Bellis, two brilliant men Felix Block of Stanford University and Edward Purcell of Harvard University discovered MRI in the 1930s. Because of their discoveries they used nuclear magnetic resonance (NMR) to study composition of chemical compounds....   [tags: radiowaves, doctors, diagnosis] 764 words
(2.2 pages)
Better Essays [preview]
Imaging Truth: Is Functional MRI the Future of Lie Detection Essay - ... Many other methods existed in different civilizations, some more accurate than others. The human desire to obtain the truth only got stronger as our species entered the electronic age. The most common type of lie detector test is the polygraph test. This test monitors the vital signs of the body in order to detect slight changes, thus signifying deception. The polygraph test functions based on the idea that changes in blood pressure, electrodermal activity, and respiration are correlated with lying or deception (White, 2010)....   [tags: magnetic resonance imaging] 957 words
(2.7 pages)
Research Papers [preview]
Magnetic Resonance Imaging Essay - Magnetic Resonance Imaging In 1944, Isidor Isaac Rabi was awarded the Nobel Prize for Physics for his resonance method for recording the magnetic properties of atomic nuclei. This method was based on measuring the spin of the protons in the atom's core, a phenomenon known as nuclear magnetic moments. From Rabi's work, Paul C. Lauterbur and Peter Mansfield were able to research into magnetic resonance imaging (also known as nuclear magnetic resonance, NMR) and were awarded the Nobel Prize for Medicine in 2003....   [tags: Papers] 4295 words
(12.3 pages)
Strong Essays [preview]
Magnetic Resonance Imaging Essay - Magnetic Resonance Imaging Magnetic resonance imaging has the potential of totally replacing computed tomography. If history was rewritten, and CT invented after MRI, nobody would bother to pursue CT. --Philip Drew (Mattson and Simon, 1996) WHAT IT IS Magnetic Resonance Imaging, or commonly known as MRI, is a technique used in medicine for producing images of tissues inside the body. It is an important diagnostic tool because it enables physicians to identify abnormal tissue without opening the body through surgery....   [tags: Medical Technology Medicine Essays]
:: 3 Works Cited
924 words
(2.6 pages)
Better Essays [preview]
Magnetic Resonance Imaging Essay - The Faces Behind the Discovery of Magnetic Resonance Imaging Isidor Isaac Rabi He won the 1944 Nobel Prize in Physics for his "resonance method for recording the magnetic properties of atomic nuclei." He was the one to discover that protons have magnetic moments and that they precess around an external magnetic field. His experiments (on nuclei) revealed the jump between energy states of the proton when resonated with radio frequency waves. Felix Bloch & Edward Purcell Both men independently took Rabi's experiments to the next level - condensed matter....   [tags: MRI] 1721 words
(4.9 pages)
Strong Essays [preview]
Magnetic Resonance Imaging Essay - Magnetic Resonance Imaging MRI is a procedure, in wide use since the 80s, to see the anatomy of the internal organs of the body. It is based on the phenomenon of nuclear magnetic resonance (NMR), first described in landmark papers over fifty years ago (Rabi et al. 1938; Rabi, Millman, and Kusch 1939; Purcell et al. 1945; Bloch, Hansen, and Packard 1946) (4 ). . The MRI is a valuable diagnostic and research tool with also practical applications for surgical planning and conquering diseases. This imaging procedure is painless and non-invasive although sometimes discomforting as the patient lies down in a body tube that surrounds them....   [tags: Biology Essays Research Papers]
:: 5 Works Cited
1958 words
(5.6 pages)
Powerful Essays [preview]