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Physics of MRI

heather_heupel

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Ever since I had an MRI on my knee (worst experience ever) I wanted to discover what was really going on. Sitting still for 32 minutes really makes you start to think about everything. I wondered what the machine was really doing. I had to take off all of my jewelry, or clothes that may have metal on them and until 9 minutes into it did I realize I left my ring on. I only noticed because it was vibrating and made my hand feel weird. I pulled the emergency cord and told them what was wrong and they allowed me to keep it on because that part of my body was not in the tube.

I found a really good video that started off by explaining the waves, amplitude, frequency, phase, etc. The concepts are kind of hard so I had to keep re-watching parts of the video. I also still need a lot of explanation. What I did pick up was this is one of the times electrons aren't as important as the Nucleus. Using the technology and creating the clear pictures, tumor tissues could be differed from normal tissues. It became the quickest (although not very quick if you're actually in one) screening tool to detect these defaults in the human body. To make an MRI picture, they use 3D space to focus the image of the ligaments.

This was a very hard topic to research especially since it is only my first year of physics but Mr. Fullerton I'm sure could easily understand it;



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