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Living human brain images of "unrivaled clarity" from new 11.7 teslas MRI
- dmarchand90 3y agoCool article but should put the date 2019 since it's a bit old
- raccoonDivider 3y agoThis just got posted: https://twitter.com/EmmanuelMacron/status/1775124972920332702 https://twitter.com/EmmanuelMacron/status/177512497292033270...
- _ache_ 3y agoBad URL. https://www.cea.fr/english/Pages/News/world-premiere-living-brain-imaged-with-unrivaled-clarity-thanks-to-world-most-powerful-MRI-machine.aspx https://www.cea.fr/english/Pages/News/world-premiere-living-... Or for French speaking people: https://www.cea.fr/Pages/actualites/sante-sciences-du-vivant/premiere-mondiale-cerveau-devoile-comme-jamais-grace-irm-le-plus-puissant-monde.aspx https://www.cea.fr/Pages/actualites/sante-sciences-du-vivant...
- chasil 3y agoViewing this image separately reveals higher resolution. https://www.cea.fr/english/PublishingImages/Pages/News/world-premiere-living-brain-imaged-with-unrivaled-clarity-thanks-to-world-most-powerful-MRI-machine/differentes-coupes-axiales.jpg https://www.cea.fr/english/PublishingImages/Pages/News/world...
- p1esk 3y agoOh wow! Imagine how the chances of detecting a tumor increase going from 3T to 11T. I wonder how much the resolution would increase if we went from 11T to say 50T?
- lostlogin 3y agoThe limit of detection hasn’t been the hardware for a long time. It’s humans reading the scans and the availability of the scanners. Various groups are chipping away at low field magnets with the aim of improving access, and their results are impressive.
- p1esk 3y agoI don’t get it - the 11T image has vastly more information than 3T image. Are you saying all that extra information is not helpful when trying to detect tiny tumors or clots? Are you a radiologist?
- landryraccoon 3y agoI think they are saying that even with much better MRIs the limiting factor is finding a radiologist to interpret the image, and the costs of treatment.
- p1esk 3y agoI’ve never had a problem finding a radiologist in US and my insurance covered something like 80% of my last MRI. I think I paid ~$300 for it. I would gladly pay double that for a more reliable detection.
- lostlogin 3y agoNo, I’m an MR tech. I can do thin slices on a 3T just fine. They don’t usually help, with the standard 3mm providing plenty enough information. We do the odd scan that is 0.5mm slices. If I show a lesion that’s <1mm, will anyone do anything about it? Watchful waiting seems likely. The question is ‘do thinner slices improve diagnostic accuracy?’ I’m sure they do… to a point. A monster of a machine like this will be research based and being doing dti etc at extreme resolution. Not that helpful clinically, very useful to the researchers. Getting more people scanned is much more of a problem than getting more scanning on the same cohort.
- 3y ago
- lostlogin 3y agoWeird inhomogeneity in the 3T image (and in the 7T, though less).
- tsoukase 3y agoThey seem low quality. At the MRI centers I cooperate with, the first image is like a CT and the 7T is like 3T.
- beambot 3y agoI have to imagine that ReBCO magnets being made in bulk will substantially change the economics of MRI machines. It's likely that new business models or market segments now become feasible.
- GenerWork 3y agoWhy do these magnets matter so much, and what about them will enable new business models/market segments?
- deleted 3y ago[deleted]
- RandallBrown 3y agoI think the magnets are much stronger and cheaper, which will make MRI machines much cheaper, allowing more uses that wouldn't have been economical before. If they were cheap enough your local urgent care could have you get one every time you twist your ankle or whatever.
- TheJoeMan 3y agoThe issue is not cost, the issue is regulatory capture has enabled hospitals to forbid your business from acquiring “competing” machines through requiring Certificates of Need. Ex. https://abc11.com/mri-lawsuit-costs-health-care-dr-gajendra-singh/5611598/ https://abc11.com/mri-lawsuit-costs-health-care-dr-gajendra-...
- msie 3y agoSo awful! Why don't they have a CON for x-rays then? Or other machines?
- lostlogin 3y agoIn places in the world where those rules don’t apply, access and cost is still problematic. There is a lack of staff, the hardware is expensive and the bill payers (insurance and national health services) don’t really want everything scanned all the time.
- 1024core 3y ago> Published on 18 July 2019
- kick_in_the_dor 3y agoIs it bad for the human brain to receive that much radiation? (I have no idea if magnetic field == radiation, I was just told from my ENT that doing too many CT scans can be risky)
- raccoonDivider 3y agoCT scans irradiate you, MRIs don't really. Just don't have any metal in you.
- huytersd 3y agoIs not radiation. It’s just strong magnetic fields.
- sharikous 3y agoStill the question remains, are they dangerous? I guess some materials in the body have some response to magnetic fields
- Madmallard 3y agonot at all whatsoever. however if you have gadolinium injected for contrast some people have problems with that. but the magnetic field itself doesn't affect you negatively on its own
- twobitshifter 3y agoI was in an MRI recently that gave me crazy muscle spasms in my back synchronized with the MRI pulses. It is apparently semi common to get that type of thing, but it was unnerving to have the machine seemingly take control of my nervous system. Anyways this was an old machine going into ‘retirement’ next week i was told. I wonder what my response would be to 11T magnet.
- xattt 3y agoWhat was the strength? I’ve had a sensation similar to a Jacksonian march in a 3T head scan.
- extraduder_ire 3y agoI've long thought it's a wonderful coincidence that there's not enough magnetic material in the average human to make MRI dangerous to the point of uselessness. Good to know what to look out for if I ever get a scan. I wonder what the mechanism that caused that was. Induced current, maybe.
- rcxdude 3y agoThere are safety limits on MRI machines (more related to how quickly the fields change as opposed to their absolute strength) so that they don't stop your heart. I'm not suprised they can have some noticable effect below that.
- toomuchtodo 3y ago> Time-varying gradient fields may induce currents in nerves and muscles, causing tingling, tapping, or twitching. Patients must be instructed to alert staff immediately when they experience such sensations. (peripheral nerve stimulation) https://www.jospt.org/doi/10.2519/jospt.2011.3906 https://www.jospt.org/doi/10.2519/jospt.2011.3906