ok video, audio sucks. Has reverb or echo in it that makes it harder to understand. Sounds like it went through a low pass filter.
@johnricely313 ай бұрын
hell yeah
@akashgonga4 ай бұрын
thank you.
@schoolsvennazw57324 ай бұрын
😂 wow very nice 👍🏼❤
@kendall85004 ай бұрын
Can you do auld lang syne
@loftlab4 ай бұрын
we can try next time, thx
@labistaytuned6 ай бұрын
Which sequence you are using to create such rhythm 😂
@mateoruizalvarez17337 ай бұрын
By far the most clear explanation I've seen. Wonderful animations. Thanks!!
@user-fk1nf8br8o7 ай бұрын
Good explanation!
@richardscritchfield44239 ай бұрын
This was the best explanation I have seen. Great work!
@ernstuzhansky10 ай бұрын
Wonderful explanation! Thanks!
@JoLoGoe10 ай бұрын
Thank you for this excellent explanation! Great!
@interwebzful11 ай бұрын
how many minutes was a single run?
@loftlab11 ай бұрын
each scan duration was 160s.
@interwebzful11 ай бұрын
@@loftlab thanks! i'll be keeping an eye on this technique, it seems very promising
@adweet6691 Жыл бұрын
Very helpful video!! thank you for sharing
@youssefabdedaim2324 Жыл бұрын
Hello thank you for your explaining, i have a question please, how we can obtain the sensitivity maps ?
@AlberGrau Жыл бұрын
Thanks really good video
@minakshi2089 Жыл бұрын
Is there anyone working on k space and codings ???
@alpaca6575 Жыл бұрын
雪花飘飘 北风啸啸 哈哈哈哈哈
@caldersheagren Жыл бұрын
This is great
@mengqiwu574 Жыл бұрын
defintely the best presentaiton I've ever seem in this topic. The visualizations are super clear and easy to grasp. Thank you so much
@carminecalabrese5207 Жыл бұрын
good
@namangokhru9282 Жыл бұрын
Great explanation
@asmaaalmasri7305 Жыл бұрын
Can you elaborate on why the phase does not show the same intensity variation as the magnitude
@chenyangzhao247 Жыл бұрын
MRI signal is the xy component of the magnetization. The magnitude is the length of the xy component, while the phase is the direction of the xy component. Let's take gray matter and CSF as an example. When you apply an excitation RF and wait the same amount of time (TE) to acquire the signals, CSF will have a higher signal magnitude than GM because of slower T2 relaxation. However, the directions of the magnetization (phase) of GM and CSF should be the same because the spins were tipped to the same direction by the same RF and have the same angular velocity due to same B0. So, ideally, you should observe intensity variation in magnitude but not in phase. However, there are always imperfections, including B0 offset, inaccuracy of readout time, susceptibility, etc..., which cause the intensity variation in phase. Some MR technologies create intensity variation in phase on purpose, such as phase contrast MRA which allows flowing spins accumulate phases by applying a bipolar gradients along the direction of the flow. This is an interesting topic, and hope my response is helpful for you.
@asmaaalmasri7305 Жыл бұрын
@@chenyangzhao247 thank you for your answer. I have many questions in image reconstruction that well be very nice if u can answer me :) 1- why an FFT shift needs to be carried out on k-space before and after the iFFT is applied. What is the purpose of the FFT shift? 2- Where are low-frequency components located in k-space? 3-What happens if you only apply the FFT shift before, but not after performing the iFFT on the k-space
@nreggente Жыл бұрын
masterfully related. a true teacher. thank you.
@UraniumGirl Жыл бұрын
Thank you! This is really great and helpful.
@megansland89202 жыл бұрын
LOVE THIS! how did you make the gradients do that?
@loftlab2 жыл бұрын
thanks, yes we used gradient to play the tune
@aladdin17762 жыл бұрын
THANK you so much for your great presentation
@ricardo58752 жыл бұрын
Thank you for the excellent video lecture. I have shared it with my students.
@clemensstilianu87702 жыл бұрын
Great! 😄
@richardslade13372 жыл бұрын
Is this why all the hospitals are short staffed? 🤣🤣🤣 Pure genius. Well done.
@orene75942 жыл бұрын
Love it
@slim123jim2 жыл бұрын
How? Like …. How!! Even if you programmed a custom pulse, how did you adjust the tempo and the rhythm of the melody!! It’s so creative and cool as hell.
@loftlab2 жыл бұрын
MRI is a perfect instrument bcz the timing is accurate to microseconds, you just need break the norm a little for programming custom sequence (e.g. not fixed TR)
@slim123jim2 жыл бұрын
@@loftlab how many parameters did you change to get this perfect sounding melody. Not fixed TR and what else (e.g. TE, FA etc)
@loftlab2 жыл бұрын
only gradient timing, RF doesn't make sound
@AOL03212 жыл бұрын
Cool! Siemens?
@loftlab2 жыл бұрын
Yeh Siemens Prisma and Terra, but we program custom pulse sequences to generate music and Xmas tree stocking images
@AOL03212 жыл бұрын
@@loftlab The Renault Formula One team programmed their engine to play “God Save the Queen” too!
@AOL03212 жыл бұрын
@@loftlab kzbin.info/www/bejne/joO7qIqYpMSgjpI
@loftlab2 жыл бұрын
@@AOL0321 good to know, thx for sharing. Ours sounds slightly better [Smile]
@roblmri2 жыл бұрын
What pulse sequence is that on the ACR phantom?? That is great!
@loftlab2 жыл бұрын
thx we programmed custom pulse sequence
@Fly96High2 жыл бұрын
sick
@LiWangRoadTo6Pack2 жыл бұрын
太有才了!
@estherchantalamungalaba52952 жыл бұрын
Absolutely incredible explanation. Thank you!
@TheAwesomeMister2 жыл бұрын
Really nice presentation! Thank you a lot especially for the good examples and visalizations. I found it very helpful to see what happens in the spatial space when the k-space is blacked out at different degrees! All the best
@LiuDaNaMD2 жыл бұрын
fantastic!
@jacobvandijk65252 жыл бұрын
Really nice video. Thank you very much! I love this summation-fragment: 6:29.
@mikeschulte42712 жыл бұрын
Best of luck to you guys, hopefully ur lab reopens soon! Is it bad for an mri to sit that long and not be used? Like does the helium boil off faster or slower when it’s not in use vs when it’s used every day?
@TheEducatorPhy2 жыл бұрын
Really helpful to me. Appreciated.
@kirito-bt9ty3 жыл бұрын
Thanks for this vedio!
@redshifted87903 жыл бұрын
Brilliant explanation, thanks!
@loftlab3 жыл бұрын
Thanks
@alloutofsync3 жыл бұрын
Nice ensemble !
@andy-19983 жыл бұрын
Is this the actual gradient coils making the music?
@loftlab3 жыл бұрын
Yes it is
@andy-19983 жыл бұрын
Cool!
@wolfdale_3m3 жыл бұрын
And then the Radiologist got fired for MRI misuse.
@loftlab3 жыл бұрын
nobody gets fired for this
@kemijarks3 жыл бұрын
First wonderful tune ! second next step would be an EPI resting sequence that sings for the patient while collecting resting-state :)
@zhiyuanzhang49053 жыл бұрын
It is very good!!!! The original song is called "Yi Jian Mei" singed by a wonderful singer Yu-Ching Fei.