I have nothing to do with medicine in my daily life, but I was curious about the tech and details behind MRI machines. Stumbled upon this video and actually learned something, very nicely explained! :)
I´m a radiologist for 22 years and I am quite surprised by how clear the explanation was. I will use it in my course graduation classes of medicine. Congratulations!
@@numbersletters2920 btw csf is free flowing material...as like blood flow...so in flair all free moving mateiral will be black...because that's fluid suppressor
I`m neurolgist for 20 years now and I`m really impressed by this, so clear, well sorted and pragmatic for every in house neurologist. Basic algorhythms are needed to work in a stable solidity, even at 3 am, deeply sleep deprivated.
Roman Czekaj He is correct fat is dark on a conventional SE T2W but in the clinical field they use T2W FSE to reduce scan time, but it gives fat an higher signal intensity because some echo's in the ETL are starting to get T1 weighted.
*☼ i looked at all the people saying they were neurologists, and presumed they were confederates:* but i am a cognitive neuro undergrad who worked 7yrs diagnostic med (mostly CT/MRI) thru school, before grad methodology, MSc psychiatric & Master of Medicine (where i still am): this is as good as is claimed! except fatSat will suppress fat images on T2 - otherwise fat will also be bright. but otherwise - pretty great! i wish it had BOLD and a couple mins on pet/mri etal, but this pretty much has it all. if there is one for msk *shrugs* there is not too much missing of the core (keeping out of the quantum/atomic realm). condensing things is not as easy as people think. very impressive.
Awesome !!!! I have learned so much I was struggling to understand the basic difference between the different sequences of MRI. Please keep on uploading more brain imaging.
Jose Parra In a real T2 weighted immage the fat shouldn't be bright, but because of the long scan time they mist likely use T2W Fast Spin Echo where there are multiple echo's in 1 repetition time. With those multiple echo's not all of them are T2 weighted. In the ETL the central echo is the real T2 weighted echo but left of that the echo's start becoming more T1 weighted what gives fat a higher signal intensity.
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I'm 37 and just had a brain MRI the results showed three nonspecific scattered foci of the high T2 flare signal in the subcortical and periventical white matter
It's so unfortunate.....u aren't uploading any videos on mri imaging anymore...do post videos on mri....it's one of the few unmet needs on RU-vid...with huge fan following.
really nice video!! Thanks so much! The music was very distracting for me though. Maybe you could leave that off and let us listen to background music if we can handle it! :)
Thank you very much for your very informative video. As we did not touch this topic in my medical school, I am very grateful. I have 2 questions, however: In your T1 sequence you mention fat is bright. This is reflected in that the white matter is lighter than the cortex. However the Basal ganglia, i.e. grey matter, seem to be brighter than the white matter tracts. Could you (or someone else) explain this? Secondly, you added the correction of fat being bright in T2 like it is in T1. Did you use fat suppression or saturation in your examples (as your T2 sequences indeed show darker white matter)? Than you in advance.
Question. Nobody has been able to help me on this one, and if you've never heard of the sequence about which I'm going to discuss, go on RU-vid, and look for MRI sounds, and there's this one short video where a few are heard, and are LISTED in the video. The one I'm trying to figure out is called BIDE!!! I've asked, and asked, and asked, and asked, radiologist, after radiologist, and nobody knows about BIDE. They know VIBE, but not BIDE!!! WHAT IS BIDE?????? I want to learn about the BIDE sequence!!
Sir i am very new to MRI study, and i appreciate your work, there is just one confusion, in my study material which is provided by my teacher it says that fat is bright in t2 sequence but you are saying that fat is dark in t2 sequence, please guide me, someone with proper knowledge.
Congratulations on de work gás helped us a lot. I would like to make a request please if possible release legend in Portuguese Brazil and would help us further, we foreign registrants. Big hug success.
Hi, great video. In terms of MRI functionality and time sequence of imaging, are T1, T2 and FLAIR images all taken at the same time, or are patients told to lie still for three separate sets of images? Thanks!
these would be performed as separate sets of of images so if you get a T1, T2 and FLAIR you will have three separate sequences with short pauses in between. Hence the slightly longer examinations times for MRI
can you please explain me how did you get that 3d model in black and white specturum colors please please help me that would be very helpful i was strucked in many times i used 3d slicer , i used fiji image processing tool,those every thing doesmn't worked for me @kmo1624
Man hats off..my head was hurting trying to cramp these imaging studies up..but u my friend explained it so smoothly...please do video on other modalities..CT MRI X ray doppler flow Usg all of these uses , advantages and disadvantages pleaseee
Please explain to me one thing, if you have time. In multiple sclerosis, what is the difference between "leisure in T1" and "leisure in T2". I read somewhere that the treatment is considered ineffective if a patient has more than 9 leisures per year in T2. But what does that actually mean? T2 leisures are deeper, or "worse" than T1 leisures?
you said the fat is bright in T1, en then in T2 de fat is dark, but in T2 you also can see the scalp fat. I thought the fat is Hyperintense in T1 and T2.
Diego Verástegui in a real T2 weighted immage fat should be hypointens, but because of the scan time they use T2 fast spin echo where there are echo in the ETL that are more T1 weighted what gives fat an higher signal intensity.
I was struggling with understanding MRI sequences and i generally don't like commeting,but i had to express gratitude! this is gold and the go to video for an MRI noob! Thanks
can a non-contrast MRI detect a AVM? I was severly born premature in 80's so I'm worried I'm that 1% that has an AVM. I just had a regular MRI with no contrast for other issues with my head, what would that show? not much?
Hi...This is a masterpiece presentation within the shortest time possible am able to grasp something great concerning T2/T1 weighted images of the brain. Thanks a lot.
