Radiographer Films Inside of a CT scanner spinning at full speed.

A radiographer working at a hospital in Vejle, Denmark filmed the inside of a CT scanner while it was operating at full speed.
The fascinating footage, captured by Morten Hjordt, shows the scanner spinning around at a great pace, barely making any noise.
Hjordt told Newsflare: "I work full time as a radiologic technologist (radiographer) at a hospital in Vejle, Denmark.
"I am mainly working on the CT scanners but also doing X-rays and ultrasound.
"The is the first time I've ever seen an open CT spinning around. I find it amazing how far technology has come to build such a perfectly balanced machine."
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[@ryanparks271]

Imagine how well balanced that wheel needs to be, partly to keep the images clear but also to keep it from ripping itself out of the foundation

[@ZQRJNG]

giving the fact that its so high tech, balancing must be the easiest thing...

[@tippyc2]

On the architectural side, it's a major design consideration in the building to limit vibrations in that room. It's not the machine that vibrates, but other activities in the building can transmit vibrations to the machine.

[@splitbolt]

I was thinking the same thing. That is an incredibly dangerous piece of machinery. 😥

[@ZQRJNG]

@@tippyc2 how is the room affecting the balance of that rotating mass? If what you say is true, a automotive turbocharger that is balanced to 170k rpm should explode while operating in a diesel engine right? No ofc

[@tippyc2]

@@ZQRJNG If the floor it's bolted to vibrates, it doesn't matter how well the rotating mass is balanced. I wasn't discounting that the wheel is well balanced, merely adding a piece of related info.

[@tannercrawley9099]

I’m a CT tech myself and the technology is amazing. To think that some of those scanners actually tilt to get better images while still spinning at that speed is insane.

[@Morgow1]

How many millions of $ does one go for?

[@porkchopspapi5757]

Can you explain why it needs to spin fast?

[@porkchopspapi5757]

Can anyone explain why it needs to spin fast?

[@thefox47545]

@@porkchopspapi5757 In a nutshell, to produce good diagnostic images. Early CT machines could take minutes to scan, causing scans of moving organs like the heart and lungs to produce distorted and blurry images. A scanner this fast can get great images cuz, for example, your lungs can be scanned in a single breath hold. The science is MUCH more complicated to explain here but scans of the heart without any motion, and other great things, are possible due to this fast spinning and about 1000 other technical factors.

[@porkchopspapi5757]

@@thefox47545 Thanks that makes sense.

[@RyanPetersons]

It would be cheaper to just spin the person.

[@pologamero2648]

No really, all the organs would move and would be a mess of image...and all the vomit....😂

[@flaplaya]

Certain people anyways

[@freeze1625]

This is big brain time

[@brianball6670]

@@pologamero2648 Puke... EVERYWHERE!

[@chrisgin8417]

Lmaooo

[@ZX12IAN]

Had lots of CT and MRI scans, never knew there was so much inside them, must be exceptionally well balanced.

[@JasonLowderTheRanga]

You know how you take something complex apart and always end up with a spare screw? 0-0

[@ZX12IAN]

@@JasonLowderTheRanga I call them "pocket bolts".not sure where they are from? Just shove them in your pocket.

[@Nolan.Gurule]

Have you ever had complications from CT scans?

[@kowshikcharan9964]

How many ct scans you have undergone

[@MrEthanhines]

@@ZX12IAN same place where sock go from the dryer

[@easydoz1]

Oh!. The Teleportation device is ready.

[@irvan36mm]

Mini Stargate

[@Woogoo336]

Teleporter goin' up.

[@jorihuovinen1779]

Stargate opens.

[@ricksanchez7999]

Tell me about it. Use portals everyday. Boring

[@ricksanchez7999]

@@brads9114 I work at a hospital to and I take my job serious, but I’m off work and get to Rick Roll people. How do you want your liver to be scanned?? Sunny side up? Or Magnetized?

[@leemilica]

*FORBIDDEN WASHING MACHINE*

[@Ki-xe8ui]

xD

[@mohammedaslam3768]

CT SCANNER LEFT THE CHAT

[@stuartd9741]

Could these spinning CT machines the cause of climate change lol.....!

[@ashwath2207]

😂😂

[@Invincible_Sun]

I was about to comment this

[@leinadreign3510]

"Trust me, im an engineer. There is no way a ressonance cascade could ever happen!" -last words from an engineer

[@followtherules4808]

kzbin.info/www/bejne/qKGbmamvn7-KftU Here it is.

[@michaelsteinbach]

Uh, it's probably not a problem...probably...but I'm showing a small discrepancy in...well, no it's well within acceptable bounds again.

[@TheBlargMarg]

Headcrabs start popping out of the scanner...

[@ganii1804]

Its...its not...its not shutting down!

[@unclestone8406]

"GORDON, GET OUT OF THER-

[@ByronScottJones]

For the curious, I looked it up, and a CT Scanner can spin at 120-200 rpm. The fact that they can spin while maintaining the power and data connections along what must be a set of parallel tracks running inside the machine is really amazing.

[@ShainAndrews]

How long have generators been a thing?

[@ByronScottJones]

@@ShainAndrews completely different. On most AC generators, the main outputs are connected to stationary parts of the generator. In a CT Scanner, you're not only dealing with power signals, but high speed data signals. High speed data signals are challenging enough in stationary devices. I suspect that if you looked inside that machine at the data delivery sections, you would find very advanced tech involved.

[@ShainAndrews]

@@ByronScottJones Generators either have slip rings (commutator is a slip ring) or brushes. From power plants all the way down to portable units. Data is wireless.

[@stickyfox]

@@ShainAndrews I used to work at Moog, where those slip rings were manufactured. They have data tracks too. They resemble a coaxial cable with a central ring enclosed in a shield ring. The brushes are also coaxial and engage the shield and conductor with the least possible impedance disruption.

[@magicsasafras3414]

​@ShainAndrews, who the hell uses a commutator for a generator? Do you mean brushed dc motors?

[@ianlehman8342]

"Go ahead Gordon, slot the carrier into the analysis port."

[@bbsonjohn]

we need a half life SFX version of this

[@kevinroylancephotography9437]

Shutting down....attempting shut down....

[@nobody4y]

@@kevinroylancephotography9437 Its not... its not shutting down !

[@Fowrkov7]

OH GOD!!! *explosion*

[@zenniththefolf4888]

I was just thinking about making this same comment until I saw I was beaten to it.

[@dmull6776]

You have been charged $2500.00 for the pleasure of watching this video.

[@eowanpassion]

No you haven't, because this isn't a 3rd world country, this is Denmark, where healthcare is universally free for everyone

[@dmull6776]

People living in Denmark pay some of the world's highest taxes - up to half of their income.

[@eowanpassion]

@@dmull6776 that is correct, and we pay it gladly, to have world class health care, no potholes in our roads, universal benefits if you become unemployed, free education at any level.. And guess what, we still have plenty of money to spend 🙂

[@dmull6776]

@@eowanpassion I can only dream about such a life....

[@anyau]

free :)

[@GoodMusicManiac999]

I had to take a CT scan as a child (actually had to repeat it because I had cough) and it seemed like being on a starship, especially when the machine was started. It's fascinating to see how it works.

[@ShalmendoGlineux]

You know, I think going with A Sci-fi theme for MRI's would help a lot of people, not even kids, be more comfortable with the scan since it's so claustrophobic.

[@helenarichard]

@big will you only see a small part. Like a flashy cartoon. Thank god. If I saw the whole thing I would go mad. They already pushed me inside with a tube half strangling me.

[@SyzygyNoon]

Finally, I get to look inside it, instead of it looking inside me.

[@Livingreciever]

thats actually insane, especially as the diversity of presicion components that are so perfectly balanced for the spin and tilt without breaking apart. Humanity Does have SOME hope.

[@mookfaru835]

People used to be slaves 1000 years ago now poltival systems are better for the rich countys but the cultural system is worse there

[@mineborders]

@@mookfaru835 But the technology is good.

[@datsunz152]

the parts aren't balanced. They build the doughnut and add weights where needed. At least you tried to sound smart

[@ChristianMiersch]

Machine precision equals hope for humanity? I'd suggest switching on your brain before talking.

[@jimmymcjimmyvich9052]

Dynamic balance is really very simple to achieve. But glad you are impressed.

[@Ever_vg]

Brand: Cooper what are you doing ? Cooper: docking...

[@makisjnx007]

Case: Is not possible

[@balajikupsingh383]

@@makisjnx007 Copper : It's Necessary

[@illustriouschin]

He's starting to believe.

[@devinstepp4205]

This is an underrated comment. 👏👏

[@roygilissen8863]

And for our next trick.....

[@DaysofKnight]

This is amazing to look at, not only becuase of the perfect spin, but also how well built something has to be for such a spin, on top of that, how well it's built so that nothing flies off, all while making a soft hum. I've been in one of these, I had no idea it was a giagantic spinning ring of electronics. Thanks for the video

[@gbsailing9436]

The soft hum is pre-recorded and play at just the right time as it starts...

[@ShanHFernandes]

seeing the insides for the first time

[@lemingtai3747]

CT scanning the CT scanner

[@user-dy9tf1ch1n]

STFU dead channel

[@lemingtai3747]

@@user-dy9tf1ch1n who are you talking to?

[@hyphen2612]

Wow, I always imagined they're just spinning a disk wrapped in superconducting coils much like an electric motor and all the sensors are dotted around it being stationary. Turned out they be spinning the ENTIRE primary equipment set! The engineering required to have them spun in perfect balance while supplying the sensors and cooling fans with power while streaming all those sensor data is pretty amazing!

[@TianarTruegard]

magnets are for MRI not CT, CT uses X-Ray tubes and detectors. Multiple pairs on the spinning ring.

[@sliderdriver1]

I've had/need more than my fair share of CT/PET scans and as a previous person, I'm a mechanic of 34 years. To see the 'mechanics' and high precision equipment being spun at such speeds is incredible. Automotive technology today wasn't even conceivable when I started out and the technical ability of engineers who design these machines is truly awsome! Imagine where we will be in another 20 years. I'm lucky to still remember points and condensers and now it's all software driven electronics with self learning abilities. I wonder if and when the medical world will have the use of self learn technology? I can actually see 'machines' replacing doctors for diagnosing illnesses in the not so distant future!

[@steveplayford1587]

My wifes been in one of those, she would shit her pants if she knew what was going on. The nurse said it makes a little vibrating noise nothing to worry about it's normal.

[@willyhillstrom7816]

I'm cracking up, I don't think they tell people about this? No way anything could go wrong here?

[@alana314]

I’ve had one and I kind of wish I hadn’t seen this video

[@WilliamPayneNZ]

I’ve have lost count of how many CT scans I’ve had. If you are in a General Electric machine it is pretty obvious what’s going on as there is a view panel where you see everything spinning.

[@JeffReeves]

@@WilliamPayneNZ As someone with severe claustrophobia this sounds like nightmare material...

[@NinjaOnANinja]

@@JeffReeves It is, but they give you drugs if that is the case. It's like being drunk and high at the same time, and for like 6 to 8 hrs. Sometimes phobia is good 🥴

[@HDLDesigns]

Largest fidget spinner I’ve ever seen in my life

[@ChipLinck]

In the old days, there were cables. It would spin once, then spin back. They would scan a slice, reset, and then move the bed up for the next slice. Now with it continually spinning, they can take a helical scan while moving the bed as it spins. Now the cables are no longer directly connected to the tube, camera, and electronics. On one end you have a tube that is receiving high current and voltage, and on the other you have an X-Ray camera transmitting the image, all connected by slip rings.

[@markwyatt3088]

MRI scanners do not use X-rays or any radiation at all. They are harmless compared to CAT scans or X-Rays.

[@iggysfriend4431]

You're thinking of a CT or CAT scan, MRI scanners use superpowerful magnets and radio waves, not x-rays. PET scanners use a radioactive dye injected into the patient.

[@wilfriedklaebe]

@@markwyatt3088 This is a CT machine though.

[@wilfriedklaebe]

@@iggysfriend4431 This video is literally showing a CT scanner...

[@0ldw3lshm4n]

The voltage is high but the current is relatively low. This is no camera opposite side, there is a detector array and the signals from the detector array have to be converted to image using a reconstructor which does some clever fourier transforms. :-) The old scanners mostly did just over half a turn before slip rings introduced in the 90's.

[@akskhurana9353]

Man, videos like this is why technology and innovation is so amazing.

[@TempoDrift1480]

You mean, technology and innovation is why we have videos like this.

[@Ing_Failure]

-Are you shure that it's safe to enter an gigant-metal-spinning-donut? -Yea totally...

[@stephweasenforth7891]

I had a chest CT done a while back, and aside from the sudden warmth because of the contrast dye, it was a pretty pleasant experience. I was more amused by the machine talking than I was anything else

[@RobTheTrucker]

Filmed on location at the Black Mesa Research Facility.

[@AlexApol]

Ahh hello gordon!

[@pietjefrauenfelder1590]

The right Man in the wrong place can make all the difference in the world!

[@lancel7998]

Service engineers like to joke to "Be careful, it'll rip your arm off and beat you to death wth it before you know it"l

[@KingSlimjeezy]

flashback to that webm from a chinese factory *shudder*

[@novakane8722]

@@KingSlimjeezy which one?

[@sccrguy610]

I think they use the RPM speed as a multiplier to calculate your hospital bill in America... “Let’s see now, we had the 5 minute consultation, multiplied by the 2 nurses plus 1 doctor making $80/minute, plus the MRI at 800 RPM for 3 minutes being charged $1/rotation, plus the tech who stares at the image for a minute and gets paid $400 for the diagnosis... that will be $4,000.”

[@redneckdrennan745]

LOL 4000 my ass.... thats just to walk in the door.....

[@uhavenosushi]

I know, turns out those machines cost money and so does the labor. Fuck them!

[@sccrguy610]

@@uhavenosushi Naw, fuck the government for not covering universal healthcare. Doctors still cost money anywhere you go, it’s just some countries have figured out that healthy people are more productive and will help pay for people to get healthy again.

[@uhavenosushi]

@@sccrguy610 right yeah the government will fix it. Kinda like Medicare? Oh it raised prices for everyone and can’t stop raising the eligible age? Huh. Almost like... it’s didn’t work out so well. Turn it over to them and it’ll become even more of a racket. Plus you can’t stop fat fucks from destroying their health.

[@Epiphany-818]

@@uhavenosushi idk but I like the fact that where I live people can't have their livelihood destroyed by hospital bills for an injury that wasn't their fault. Also, it usually ends up saving people money because they don't have to pay for health insurance.

[@karlsumner5594]

Wow, the design & engineering that went into that is phenominal

[@ARSZLB]

just think about how INSANELY well balanced every single little component in these things needs to be. no wonder they cost 100s of thousands

[@chongy9895]

Its not the balancing or smooth rotation thats impressive, its the technology that makes it do what it does. The balance of the machine is no more impressive than a car wheel perfectly balanced at 100mph

[@chongy9895]

The balancing is done by weights just like a car wheel

[@Ghosthuntert1]

The engineering of these devices is amazing. I am an automotive electronics engineer, During the first electronic control system fitted to cars in the 70's 80's and 90's, my job was very exciting. Being able to run the ignition systems electronically was claimed by some to be nothing more then a fad. When fuel injection and transmission control was added, many believed that using electronic components in cars was a huge mistake as the components themselves would quickly fail due to thermal and vibrational stress. I have completed component level repairs in systems from Bosch, Mitsubishi, General Motors and many more and we marvelled at the amazing complexity of these control or management systems. Most modern cars can have several control units, Engine and emmisions, transmission, Airbag and seat belt restraint, Climate control, 4 wheel drive control, body control and security. Those systems pale in comparison to medical instuments like this and the amount of knowledge and skill required to build and operated such a device.

[@markkennard861]

Apart from engine and ignition etc what do you think of the Tesla tech that controls a car ?

[@ClockworkAvatar]

8th cheveron locked...

[@paulmichaelfreedman8334]

Ka-Whoooosh!

[@the20thDoctor]

Quick, close the iris!

[@scruffy6151]

Lol

[@krashd]

Jaffa Cake!

[@mike27356]

We’re all nerds, I swear LOL

[@trueconsumer6]

And that's how my friends, a time machine starts!😊

[@jstow118]

Chronosphere ready?

[@datsun100a3]

Flux compacitor flushed?

[@rooftopvoter3015]

Hot tub time machine

[@kunalkapse5459]

@@jstow118 Y Tt T E Tt t T

[@Waccoon]

This machine saved my life. It's well entitled to now blow my mind. 8) I heard MRI machines tended to produce a lot of bangs and klunks. I was pleasantly surprised to find my CT scan was nearly silent. Now I know why, and it's both terrifying and awesome.

[@AhmadMabruriBBeruri]

To be honest.. Before I watch this video, I didn't know that inner parts of CT scanner are spinning while it's working..

[@assassinlexx1993]

When I had my done there was a little window. So you could see it flash by. Very cool

[@TheNefastor]

I got one done as a kid. The window was black, I couldn't see anything but I felt something was going on inside that machine.

[@eyyymanuel]

I didn't think it was so cool haha I ruptured my colon in a motorcycle accident and they inject you with iodine makes you feel like you just peed and craped everywhere

[@AhmadMabruriBBeruri]

@@assassinlexx1993 hahaha.. Yeah.. The machine cool.. But the impact on our body if too many uses is not.. Stay health..

[@AhmadMabruriBBeruri]

@@eyyymanuel and what is that (iodine) for in scanning procedure?

[@georgieippolito9924]

imagine if they needed to just add 1 cheap part to this to make a working time machine without even trying

[@garrykennedy5484]

I like the way you think!!!LOL

[@DianaProudmoore]

Add a bolt and nut inside randomly~?

[@stuartd9741]

Plot twist it is a time machine Dud dud derrrrrrr!

[@IkKorp]

@ShaunDoesMusic el psy kongroo!

[@stephweasenforth7891]

Whatever you do, Marty, DO NOT go forward to 2020.

[@GeezerRay]

Hope they use better bearings in that than the ones in my washing machine!

[@thomvdv]

No shit it’s a million dollar device

[@Hammyhamlove]

@@thomvdv it’s called a joke

[@stuartd9741]

True dat. Thou consumer goods are designed to fail within a certain time frame.

[@freedo333]

@@stuartd9741I've heard it called "planned obsolescence"

[@sanjeevjugadoe5467]

Hey my daughter had a CT Scan a week ago, now KZbin brings me here. 😊

[@brucejunboxing]

Glad I didn't watch this before my scan yesterday. My head was directly in the middle!!! Scary

[@elebeu]

This brought to mind the scene in "Contact" when the bomber blew up the teleportation device.

[@andybub45]

I didn’t know there was a large disk spinning that fast inside of those machines. That’s pretty neat.

[@christian4460]

Imagine this thing breaking off while your inside it

[@soupy2jz893]

Gamer13 STOP IN GETTING AN MRI ON MONDAY

[@01aviation34]

Pugs4life Vlogs how was it?

[@leemilica]

@@01aviation34 he ded

[@jbsuckssooo]

@@soupy2jz893 mris dont spin tho

[@nudavelikazceladepocitacov6817]

jbsuckssooo You are right MRIs don't spin, but let me tell you something equally terrifying. Imagine you have a small piece of ferromagnetic metal stuck somewhere in your body (maybe as result of some accident or something). You probably not even your doctors know about it. Now imagine having an MRI like that. BOOM, the 3 tesla magnetic field of MRI would turn that piece of metal into a bullet. Pretty unnerving stuff if you ask me.

[@thatpinkthing3195]

I’ve been in one and this is terrifying

[@Grayfox988]

Unscheduled offworld activation!

[@adammoss5284]

I had a ct scan recently. The noise I hear on the speed up and slow down was like a whirlwind. I thought maybe it was an inverted power supply and the coils singing but now watching the video I know what was whirling alright. Super thank you 🙏

[@dafff08]

Kinda ironic how an mrt sounds scary while being actually harmles, while this can actually turn in to a silent killer.

[@flaplaya]

You read my mind. Extremely focused beam of X photons. Spinning cancer machine.

[@paulmichaelfreedman8334]

@@flaplaya You can rest assured, such machinery has countless failsafe mechanisms in place to prevent over-irradiation, overspeed, anything coming loose, etc. via physicial means and through the software that controls the whole machine. It likely has bearing vibration sensors which are directly correlated to wear, prompting the machine to give operators a warning that bearing wear is occurring and that the machine needs maintenance within a specific number of hours of operation, in any case well in advance of any structural failure that could lead to harming the patient. The Covers are made of extremely durable material capable of containing most catastrophic failures, if not all.

[@flaplaya]

@@paulmichaelfreedman8334 I was talking about normal operation not anything else. Obsolete machines that deal out an enormous dose of radiation

[@paulmichaelfreedman8334]

@@flaplaya No they don't. You get a higher radiation dose from a high altitude plane flight of 5 hours or so.

[@thunderods7228]

Actually there was a machine which was responsible for dealing permanent damage and even killing patients, up to few dozen.

[@Apoc5k]

It's remarkably well balanced and smooth in its operation.

[@mingming9604]

the fastest CT gantry rotation currently is between 3-4 rps. About 0.28sec rotation time!. The weight of all that spinning is slightly more than half the weight of a full size car! The MRI has no moving part at all compared to CT, but they have incredibly strong magnets as well as gradient coils that can rapidly change local fields hundreds of time per sec to make the noise you hear when the MRI is working.

[@MattSofianosGuitar]

I’ve been in one of those things. It’s the most helpless and vulnerable feeling, knowing there’s more than enough force to rip you apart in an instant.

[@1ytcommenter]

perfectly balanced flywheel. between 2 - 5t rotating mass depending on type and manufacturer.

[@stuartd9741]

What wait!? 2 - 5 tonne Spinning mass?

[@1ytcommenter]

@@stuartd9741 yes. depending on manufacturer and type. multisource systems gantries (the rotating contraption is called gantry) are heavier (3-5t) then single source systems (1-3t). another fact: rotation speed today is 0.2-0.3sec per rotation. :D

[@stuartd9741]

@@1ytcommenter wow. Thats alot of mass spinning. Didn't realize they were that heavy. Thanks for the reply.

[@Vizal]

These things can weigh upwards of 2.000 kgs! Can you imagine the precision involved in this marvellous engineering!?

[@TheNefastor]

Geezus, I never realized how fast they were !

[@chrisbailey7384]

With the housing removed, you definitely can see why the MRI's are noisy because the components and inner workings are not balanced, so it act as a washing machine that is off balance.

[@TheNefastor]

@@chrisbailey7384 that's not an MRI, though. That's a CT scanner. Two completely different types of machines based on different fundamental science (nuclear magnetic resonance vs. radiography)

[@chrisbailey7384]

@@TheNefastor Oh! I didn't notice the title. It was confusing when the shell was removed. the MRI and CT scanner looks pretty similar! :)

[@NESig]

I've been retired out of the biz for nearly 7 years now. I started maintaining/repairing CT's back in '85. The technology advanced by leaps and bounds in the 30 some years I worked on them (and MRI systems and other imaging modalities). When I retired, the top of the line CT's (Philips Medical) scan frames (the rotating part you see) spun at 4 revs/second. Their scan frames rode on air bearings. They would acquire up to 256 slices of info at a time. LIGHT years ahead of my first CT systems. The xray tube anode itself spins at 10,000 rpm. The spinning anode inside the tube weighs about 15 lbs. It rides on liquid bearings. I am amazed that the xray tubes would survive in that environment. There is tremendous force exerted on them as they spin. And then too, xray tubes are notoriously inefficient.

[@Martinit0]

So is the x-ray tube rotating about the same axis as the scan frame or perpendicular to it?

[@Corndog4382]

Seeing these things without the cover kinda makes the cost of a test more understandable.

[@83joonior]

The precision that is necessary, from the mechanics that work on these devices. WOW. Just wow. Keep it up

[@MMID303]

I've been in one. Your nose is about 2 inches away from the machine.

[@philjones229]

If it was your images would have been terrible as you’d be out side the field of view of CT scanner. You need to be at least 10-15cm from inside edge of bore.

[@TheRewindKing]

That looks awesome! Mind blowing amount of engineering but looks so awesome!

[@simplywonderful449]

SHE'S GONNA BLOW! SHE'S GONNA BLOW! I've been in many of these machines due to medical issues, but I've NEVER heard one as quiet as this - I can hear the fans in the ring over the spinning scanner; usually the ones I've been in have sounded like a jackhammer as they scan, and make so much noise they issue headphones or earplugs to the patient. A former co-worker whose husband was a maintenance manager for a company making MRI scanners told of a prank one of his techs would play, betting the hospital's scanner operator he couldn't throw his wallet through the scanner while it was running. Figuring he'd make an easy $10 or so, the operator would pull out his wallet and fling it through the running machine. But for the cost of the $10 bet he lost, the company tech would later hear how the operator's entire wallet-full of various credit/ID/Debit cards were entirely demagnetized!

[@trilexi]

In the video it's a CT Scan, not MRI. Completely different machines. All MRIs make a lot of noise because of the sudden change of the very powerful magnetic field it generates. The CT scan is just a 360 X-Ray, so it's quite quiet.

[@re8672]

For those watching the tools, this is CT, not MRI!

[@paul1mdrn]

This is where Rick and Morty come from.

[@Chris119.]

In the very beginning of the video the machine is still, the long metal box with the four fans on it on the left side is the detector array, what picks up the radiation and converts it into image data. Directly opposite it on the right side of the machine is the x-ray tube. there's a thin slot where the x-rays come out, and on the back of the tube you see these two big fat wires with green wraps on the ends at the joint where they go into the x-ray tube. Those cables supply the voltage for it to produce radiation, over 100 thousand volts in most scans.

[@egoequus6263]

I would be interested to see how the rotor part is electrically connected to the rest of the machine. Must be some kind of sophisticated brushgear, or maybe it is wireless/inductive.

[@soadown5]

Well that's slightly terrifying

[@jamiemc7760]

And I fell asleep in one of those, so glad it was my leg being scanned

[@Trathaal]

I’ve been in one, and I can’t tell if it was the contrast dye or the radiation, but I could _feel_ a sort of energy as I passed through. Like a distortion or pulsating of the air and skin that was directly inside the machine. Seeing this makes me think it was a sixth sense lol

[@ms.ameris383]

Yes me too.and this smell i cant describe

[@Cokepencilpsd]

Same, it's a pretty neat feeling. I felt like my entire body was tingling.

[@ouchhurts]

magnetic field

[@jshepard152]

There's no magnetic field with a CT scanner. lol. It's just a plain old xray tube spinning around. You can't feel radiation, unless you get so much that it heats up your skin, and that didn't happen. What you felt was your body reacting to the contrast.

[@mystica-subs]

​@@jshepard152I've had chest and arm and knee x-rays and each time I felt a little bit of weirdness. I'm pretty sure that some people can feel radiation. [None of these had contrast]

[@BigDogRidgeback]

The pollish way is to drink enough beer untill the room starts to spin.

[@Cassaelet]

Around 0:52 it gets going so fast it looks like its rotating in the opposite direction until it start to slow again.

[@DangerAngelous]

I’ve had the joy of being in two of these in the past two days!

[@rickvand5580]

When I went through a CT scan i could feel like a light bass going through my body, it felt weird

[@simplywonderful449]

I hate when it feels like fish are swimming through my body! ;-)

[@percyjackson2800]

Bass go through my body all the time. I eat bass and then I poop it later, done!

[@filename099]

a calming thing is the fact it immediately slows down after reaching peak speed

[@StuartZiane]

“Chevron one is holding!” “Chevron one is locked in place!”

[@annabonanno5200]

I've had so many CT scans in my life. This is the first time I'm frightened of them!

[@zenniththefolf4888]

Welp, now that I've seen this I'll know what's past the thin plastic walls of the forbidden donut and be slightly scared.

[@KF-bj3ce]

Would love to see the bearing mechanism.

[@scottyj9150]

**Waits for Kurt Russell to walk through the middle**

[@AksoAmaral]

man, cheers for who balance that amount of things

[@MrWildbill]

I think it would be kind of cool if that had clear covers, would take your mind off whatever was causing you to need a scan.

[@__nog642]

On the other hand, it might cause some people to be scared to go into the machine

[@crazyivan030983]

And best thing. You have an exam. You go into machine and have no idea that couple dozens of pounds is spinning fast couple of inches from you. Imagine something breaks of... :) enginuity of people never stops to amaze me. Greetings from Poland :)

[@drrayman1435]

A tiny note: During an exam, this thing spins that fast WHILE emitting X-rays continuously! 😎😎

[@kc9scott]

What’s also interesting is the direction that most of the stray X-rays come out into the room. Initially I would have assumed that the stray X-rays would have mostly been radial, i.e. in the plane of the rotating assembly, due to them going through the image detector or nearby beside it. But apparently there’s enough shielding to prevent that. I have no idea whether the shielding rotates with the other stuff, or is stationary. Most of the stray X-ray radiation is along the axis of rotation, i.e. along the track and patient table, in both directions.

[@samuraijackson241]

Thanks for all the "other" videos i watches in the past. Now everytime i see something start spinning, interstellar music kicks in.

[@hopelightninstrikem8167]

I had my first CT scan today. It wasn't that bad!

[@doctabyte5370]

Perfectly balanced, as all things should be

[@TeachaMantoFish]

Looks more like a movie time machine. Morlocks anyone?

[@scratchpad7954]

I kept hearing the sound of an Airbus A380-900 taking off while standing directly under the nozzle at full power.

[@kentvandervelden]

Amazing engineering! How heavy is the rotating portion? Seems to make about four rotations / second. Would be interesting to see what the bearings are like that can support this.

[@richardcranium5839]

are there bearings or is this a big air bearing motor???

[@krashd]

Three or four tons, the balance has to be perfect or it would shake the room apart.

[@ouchhurts]

id assume its maglev as to have no resistance

[@muadibe7511]

Fascinating. Thanks for posting.

[@hubbsllc]

Wow, I expect a portal to another universe to appear in there

[@What_The_Fuck_Did_I_Just_Watch]

Det er meget interessant at kigge på. Tak for at jeg lige fik chancen for at se, hvad der sker inde i sådan et apparat!

[@brianball6670]

Okay, now I have to search what an MRI does. I have one coming up in a couple of weeks.

[@Amonomen]

MRI's are even more amazing. Here's a small spoiler - supercooled magnets. Also.. I'd recommend going without the music they usually offer, the sounds of the machine are music alone.

[@questioneverything1123]

@@Amonomen I agree with you, I never listen to the music, it is nearly like a metronome. I always fall asleep to the repetitious tone. Benzodiazapines (of course) do help me... I will take a small amount to aid in relaxing, just letting go...

[@FirstnameLastname-tp4zw]

Absolutely amazing man. Thank you.

[@the20thDoctor]

I wanna toss pennies in there so bad!

[@gameseeker6307]

*explodes*

[@nigeljames6017]

I think it needs something that would be attracted to a magnet. A penny wouldn’t do, but a wrench might cause havoc. Anyone else got any other comments on that ?

[@hardboiled7467]

@@nigeljames6017 thats MRI not CT scanner

[@nigeljames6017]

@@hardboiled7467 Duh ! You’re right. Mind you, the pennies experiment wouldn’t work in this case either.

[@AJB2K3]

@@nigeljames6017 Depends if you want the pennies to stick (not that it can) oe to see how much shrapnel flies out!

[@Oblioebel]

To spin that amount of mass that fast and the precisely..... awesome tech

[@localnyraccoon]

It looks like an untextured mesh when fast enough

[@SnapSV]

That thing spins that quickly...and what's incredible is that they can power the spinning ring. It is one thing to power the pieces of the ring and make a functioning scanner. Powering the ring and making it spin at the same time is a whole other bucket of bolts.

[@samsonchan1488]

Alternate Title: Early Stargate Prototype

[@keithtanner2806]

Presumably, the gradient coil is not switched on, that is what makes the knocking sound as it expands and contracts against its cover.

[@Astrofrank]

This is CT, not MRI.

[@annecohen8927]

Ahhh that what it does. Fascinating!!

[@b.baggins8893]

It was the money which the Beatles made for EMI Ltd. which made the development of this technology possible. As one of the first CT Service Engineers in Germany i was trained in by EMI in Hayes, Middlesex in the mid seventies. It was Godfrey Hounsfields biggest invention. Initially there was only a head scanner and with poor computing power it took several minutes to process a single image.

[@hobanagerik]

“The gate stands ready!”

[@svenschroder6197]

This thing saved my life 10 years ago

[@MM-uv6kb]

Is that the level of noise experienced while having a CT scan?.if so, that's horrific.

[@keithtanner2806]

CT scans are much quieter but when the magnets are moving, they are not in this demo, they produce a VERY loud knocking/hammering sound. You need ear protectors and earplugs.

[@Astrofrank]

​@@keithtanner2806No relevant magnets in CT, loud noise can be heard in MRI due to changing magneting fields.

[@leokimvideo]

Sounds just like our washing machine on 'spin cycle'

[@alligadrillo3332]

Is a time machine!

[@tan_tama1354]

My sister did a ct-scan and she told me that inside the tube it sounded like a war surrounded her. Now I understand why it can happen