How does MRI work? Jerome Maller explains

Рет қаралды 142,075

Translational Medicine, Monash University

8 жыл бұрын

Jerome Maller is a neuroscientist based at Monash whose special area is using Magnetic resonance imaging (MRI) for brain imaging. Here, he explains the physics and why it's particularly useful for neuroscience. www.maprc.org.au/

Пікірлер: 11

@MamaPinks 7 жыл бұрын

The best explanation I've found yet! Thank you.

@stephens2663 6 жыл бұрын

BEST EXPLANATION THERE IS!

@charliewillis6231 7 жыл бұрын

Very good this helped ma a lot, many thanks

@tigerbaby25 6 жыл бұрын

Thank you for making it so easy to understand. Very much appreciated.

@stefstef1031 6 жыл бұрын

Wow that was an amazing explanation - thank-you so much

@virgocluster338 7 жыл бұрын

great job

@samyderridj3917 6 жыл бұрын

Bravo ! 👍

@stevedepeijper5054 6 жыл бұрын

Super video!

@eppurse 6 жыл бұрын

Some corrections from an old timey tech Not just water makes the image- fat too- and materials that are not water and/or not fat for contrast I think you meant north-south and south-north when describing parallel/antiparallel "spinning" is not the same as "precessing"- a spinning top, as gravity starts to overcome it, starts to wobble around its original vertical axis- that wobble (not the spin) is the precession He does not describe the spin echo sequence adequately- there is more than a 90deg flip- after a pause ("tau"), there is another flip of 180deg in spin echo Never is just a 90deg flip radio pulse used No mention here of radio waves, radio frequencies, just antennas- as if the hydrogen is detected in some mysterious way- a grave error Not University-worthy

@MonashSTM 6 жыл бұрын

Dear eppurse, Reply from Jerome Maller: Thankyou for your comments. This video was intended as a very basic introduction to MRI as a general response to the questions posed by many of the subjects I have been involved in scanning over the years.Hence, mentioning a 180 degree flip would necessitate introducing terms such as phasing/dephasing and spin-echo (and then GRE). On that note, I do not mention radio waves or RF as that is venturing into often confusing detail. If I went into that depth, I would also touch upon k-space, FFT, coil design, TR, TE, TI, T1, T2, EPI, and the various types of acquisition techniques which are all beyond the intended scope of the video.