Magnetic Resonance Imaging Explained

Dr D. Bulte from Oxford University's FMRIB (Functional Magnetic Resonance Imaging of the Brain) centre explains the theory underlying today's modern MRI scanners and outlines the work of the FMRIB centre.

If you are interested in the field of Biomedical Sciences, including Magnetic Resonance Imaging, please click on the link below to visit Oxford University's Biomedical Sciences undergraduate course.


This video was produced by Oxford Medical Illustration -- a non-profit making NHS department. For more information please click on the link below:

[erikkayV]

I absolutely love it when people who are knowledgeable about a subject explain the subject.

[CwazyThe]

Best video about MRI there is...believe me, I searched all over

[tamabata]

Man I would love to have such clarity in formulating my own thoughts. Impressive, informative, amazing

[chiedzamatowe]

He explained so simply I now understand it. Thank you so very much Dr Daniel Bulte.

[Melissamymy]

I've explained the functioning of an MRI in a basic form since they were first about in 1980, but this really blows that explanation out of the water and expands it way beyond - brilliant!

[snowleopard]

I really appreciate how to the point this is. Some people just drag things out and repeat themselves over and over which gets super annoying. Thank you!

[nickdale]

Superb explanation, thanks. And I love the fact Dr B chooses 'doing calculus' as an example of what he might get a person to do during an fMRI session, not just 'maths' or 'sums'!

[tienho]

Hi Dr. Bulte ~  thank you for the clear and concise video explaining how MRI works, this really helped me study for radiology final exam in medical school!  All the best from Seattle.

[nothingleft]

I visited the Siemens Healthcare factory in Erlangen, Germany as part of our Bachelor's Studies. The amount of cutting-edge engineering and technology that they have in order to manufacture these MRI machines is astonishing. Simply one of the "craziest" technology companies out there.

[romyjugroo]

I hope nobody will repeat this demo near the MRI machine.Great video.

[jeannerossi]

Congratulations Dr. D Bulte. Your explanation of MRI is the best I've ever read to date. This sharing of important information is most appreciated. Thank you!

[zubairahmed]

Really a clear explanation about the MRI system. The only vedio on youtube which can clear the concept. Thank you sir for your great vedio

[avflyguy]

Been searching all over the place on how a scanner works. I finally landed here. Now I got it. Great explanation.

[magtazeum]

It's been 10 years since this video was posted..Still, it's my favorite

[ali]

Simplest way one can explain T1 and T2 relaxation. Shukriya (Thanks) Dr Bulte

[taslima]

By far the best video I've seen about MRI, trust me i'm twelve and this is the video that helped me understand this concept

[ShadowZZZ]

Physicist here and this explanation is amazing

[SteveUcdhihifvshi]

Aussie? I loved to know how it works, i asked thr operator and she was like ahhh i dont really know. hahaha
skilled. Thanks for this mate!

[lionsblood]

Smart man, thanks for making this, gave me some peace of mind.

[bikerchic]

Signal in MR images is high or low (bright or dark), depending on the pulse sequence used, and the type of tissue in the image region of interest. The following is a general guide to how tissue appears on T1- or T2- weighted images.

Dark on T1-weighted image:
increased water, as in edema, tumor, infarction, inflammation, infection, hemorrhage (hyperacute or chronic)
low proton density, calcification
flow void
.
Bright on T1-weighted image:
fat
subacute hemorrhage
melanin
protein-rich fluid
slowly flowing blood
paramagnetic substances: gadolinium, manganese, copper
calcification (rarely)
laminar necrosis of cerebral infarction
.
Bright on T2-weighted image:
increased water, as in edema, tumor, infarction, inflammation, infection, subdural collection
methemoglobin (extracellular) in subacute hemorrhage..
..
Dark on T2-weighted image:
low proton density, calcification, fibrous tissue
paramagnetic substances: deoxyhemoglobin, methemoglobin (intracellular), iron, ferritin, hemosiderin, melanin
protein-rich fluid
flow void