JMRI Machine-No, not soda machine, MRI Machine!J

By Rupert The British Bear

Intro

This is probably the best report you’ll ever read about MRI. It has all the facts, dating back to the first MRI, to the future technology of MRI. It tells you advantages, disadvantages, and some other really COOL things you just HAVE to read about yourself.  J Read on, fellow reporters, read on.   J

What are some advantages of the MRI?

MRI are helpful for diagnosing many problems, and to name a few…let me tell you what Todd Gould says they are good for.

Diagnosing multiple sclerosis (MS)

Diagnosing tumors of the brain

Diagnosing infections in the brain, spine or joints

Visualizing torn ligaments in the wrist, knee and ankle

Visualizing shoulder injuries

Diagnosing tendonitis

Evaluating masses in the soft tissues of the body

Evaluating bone tumors, cysts and bulging or herniated discs in the spine

Diagnosing strokes in their earliest stages

These are but a few of the many of reasons to perform an MRI scan.

(HowStuffWorks.com)

MRI, despite the few disadvantages, is very helpful. J

         In case a child is afraid of an MRI, they have made this one look like a castle! Probably the hardest part of the whole procedure for children is to stay still during the scanning. Taking MRI images is like taking a picture with a long exposure. Just like pictures, if the child moves during scanning, the image of the brain becomes blurry.

 

In order to become acclimated to the MRI environment a mock scanner is provided which mimics what will be experienced in the actual scanner performing the same or similar tasks.

 

Both the real and mock scanners are decorated for children with a castle scene.” (uoregon.edu) (No author) WOW isn’t that amazingly amazing. I think they should also make one that looks like a space ship. J

 

What is an MRI?

       What IS an MRI? According to Todd Gould, “To understand how MRI works, let's start by focusing on the "magnetic" in MRI. The biggest and most important component in an MRI system is the magnet. The magnet in an MRI system is rated using a unit of measure known as a tesla. Another unit of measure commonly used with magnets is the gauss (1 tesla = 10,000 gauss). The magnets in use today in MRI are in the 0.5-tesla to 2.0-tesla range, or 5,000 to 20,000 gauss. Magnetic fields greater than 2 tesla have not been approved for use in medical imaging, though much more powerful magnets -- up to 60 tesla -- are used in research. Compared with the Earth's 0.5-gauss magnetic field, you can see how incredibly powerful these magnets are.” WOW. I hope that I will never have to build an MRI to save the world… I couldn’t figure it out on my life! J

       What Does MRI stand for, you wonder? Let me tell you. MRI stands for Magnetic Resonance imaging. Want to also know WHY it is Magnetic Resonance Imaging, and not like Magical Red Ice Machine? (Actually, that would be MRIM. J) According to Todd Gould, “To understand how MRI works, let's start by focusing on the "magnetic" in MRI. The biggest and most important component in an MRI system is the magnet. The magnet in an MRI system is rated using a unit of measure known as a tesla.” Resonance? Ask James Mattson. “Magnetic resonance imaging was developed from knowledge gained in the study of nuclear magnetic resonance. In its early years the technique was referred to as nuclear magnetic resonance imaging (NMRI). However, as the word nuclear was associated in the public mind with ionizing radiation exposure it is generally now referred to simply as MRI. Scientists still use the term NMRI when discussing non-medical devices operating on the same principles. One of the contributors to modern MRI, Paul Lauterbur, originally named the technique zeugmatography, a Greek term meaning "that which is used for joining".[1] The term referred to the interaction between the static and the gradient magnetic fields necessary to create an image, but this term was not adopted.” (wikipedia.com) Imaging? Guess I’ll explain that one. The total purpose of an MRI is to get an inside scan of the body (or image) and show It to you. Since it takes a while for the images to develop, you’re in there quite a long time. So, lets re-cap- M- Magnetic, because it uses magnets to work. R- resonance, developed from nuclear magnetic resonance. I-imaging, because it develops images of the inside of the body. There you have it! MRI! J

History of the MRI

         “Who, I wonder, invented the MRI?” You ask? Listen up! I’ll Tell You! For an EXACT answer, Raymond Vahan Damadian. For a detailed explanation? Just ask Brandon Disher. “MRI, as with all medical imaging techniques, is a relatively new technology with its foundations beginning during the year of 1946. Felix Bloch and Edward Purcell independently discovered the magnetic resonance phenomena during this year, and were later awarded the Nobel Prize in 1952. Up until the 1970s MRI was being used for chemical and physical analysis. Then in 1971 Raymond Damadian showed that nuclear magnetic relaxation times of tissues and tumors differed motivating scientists to use MRI to study disease. With the advent of computed tomography (using computer techniques to develop images from MRI information) in 1973 by Hounsfield, and echo-planar imaging (a rapid imaging technique) in 1977 by Mansfield, many scientists over the next 20 years developed MRI into the technology that we now know today.” (uwindsor.ca) WOW. Raymond must have been dedicated to working on that MRI machine! J

 

How Does a MRI work?

According to Todd Gould, This is how an MRI works-“In conjunction with radio wave pulses of energy, the MRI scanner can pick out a very small point inside the patient's body and ask it, essentially, "What type of tissue are you?" The point might be a cube that is half a millimeter on each side. The MRI system goes through the patient's body point by point, building up a 2-D or 3-D map of tissue types. It then integrates all of this information together to create 2-D images or 3-D models.” . (HowStuffWorks.com)Wow. That’s confusing, and I hope I don’t have to ever build an MRI! J

Problems & DANGERS of the MRI

Claustrophobia is a problem when having an MRI.  According to Todd Gould, “There are many claustrophobic people in the world, and being in an MRI machine can be a very disconcerting experience for them.” (Howstuffworks.com). Claustrophobia is a condition where if you are in an enclosed space, you get freaked out and feel like you can’t breathe. I am one of those people, so when I need an MRI, I guess they’ll have to knock me out! J

Having an MRI requires you to hold still for a very long time. Many people cannot hold perfectly still, and according to Todd Gould, “MRI scans require patients to hold very still for extended periods of time. MRI exams can range in length from 20 minutes to 90 minutes or more. Even very slight movement of the part being scanned can cause very distorted images that will have to be repeated.”(HowStuffWorks.com) MRIs are really starting to sound like a horrible experience… L

Conclusion

I hope you learned a lot about MRI from my report.  I hope it was very interesting for you and that you won’t talk about it behind my back to people, and say things like, “HEY PSST did you read THIS report? Ha-ha what a nerd…” Yeah don’t say stuff like that, okay? Ha-ha thanks. J

                                    

 

  

 

                       J THE END J

 

Oh and by the way….

                       Bibliography

Bibliography

http://museum.toshiba.co.jp/history/1goki/1983mri.html

Toshiba

First MRI systems

April 28, 2008

This is a great article on the history of MRI's and it teaches about the past and what it took to get to where we are today in medical technology. There were No advertisements, and minimal pictures. No author, simply by Toshiba.

 

Bibliography

http://en.wikipedia.org/wiki/Raymond_Vahan_Damadian

Wikipedia

Raymond Vahan Damadian

April 30, 2008

This is a great article about the inventor of the MRI and some struggles he faced while inventing. Minimal Ads.

 

Bibliography

http://www.howstuffworks.com/mri.htm

Gould, Todd

MRI history

April 30, 2008

This is a great article about MRI's, I found some really great pictures there. Great facts, medium advertisements.