The Insane Engineering of MRI Machines

Wow simply wow!

This is pure insanity.
Imagine the knowledge it took..

Ionizing radiation is not dangerous in medical equipment. Fear mongering

Waiting for results on my MRI scan from brain and neck & EEG .

This was soooo good!!

Just had a 45 min scan done of my brain.. Tell you what if you suffer from anxiety or panic attacks, its scary.. Especially when the machine does really intense scans with a lot of noise.

An absolute fantastic presentation. Have been trying so long to understand MRI for my thesis and this video does it in 17 minutes

Alright. After this, I am no longer upset at the cost of my MRI

Now do a video on PET scanners .😊

Public education will not pump out the future of STEM fields. Many of us have been fundamentally screwed with a lifetime lived as factory workers with very little knowledge. This is sad because great teachers create great futures for everyone.

How can we use the INUMAC MRI machine, that can 100 microns small, combined with gamma waves to erase bad memories to cure depression.

I can watch it and give a comment but I am not doing so.

What's really insane-and just plain HAZARDOUS-about them is that apparently next to nothing was been done to design them against generating SPLs high enough to potentially cause partial and permanent hearing loss.

Imagine hiding your weapons here

I’m studying my biomed engineering degree (was a pharmacist first) and this video really helped with understanding how that spin can be be used to extrapolate to a full image

Understood the underlying physics, but the part that got me was how that was put together into the full image (i.e. signal processing) - love your work chief

This was great! Thank you! I just had my first one and it was an interesting experience to say the least! Imna kinda of a techno geek, but this is indeed insane. I now know what that clicking noise was! There be some really bright folks around who think this quantum stuff up. . And then there are those who design it, others that manufacture the parts and more that put all of it together.

Having a brain scan MRI in 24 hours. I opted for IV sedation this time. Screw the machine, I'll never know I'm in it this time!

Those machines magnetic fields are so strong that they can attract non ferromagnetic metals. It doesnt usally take them but I saw a plate fall like in slow motion. Its really crazy how strong and complicated they are.

and I just had an MRI of my knee as self pay for $200 ...simply amazing!

Zoom Whiz……..the sound of information flying over my head.

what a incredible archievement of mankind

Last i checked the mri machines have a rotation of a magnet. Sooo yea when you said "no moving parts" ya need to fix this thanks.

So an MRI image is basically a 3D JPeg/JPG. JPGs use a process called quantization to represent images as a bunch of overlapping patterns. Depending on the quality and specific type of JPG (technically JPG is a container format and most images are actually JFIF or EXIF) the image will be broken up into 3 channels (Red, Green, Blue, technically you can have a 4th channel that's usually either transparency or depth information) and a bunch of tiny squares (per channel). Each square is a bunch of overlapping patterns that when combined look similar to that color/square of the original image. The reason this is done in JPG is to reduce size, so long as the software reproducing the image knows the actual format* (again usually JFIF or EXIF) said software will contain a dictionary of patterns which means the JPG image only has to record a reference to which patterns are in each square. This vastly reduces the size of JPGs but also means that even so called lossless JPG (which is what EXIF is sometimes called) aren't actually lossless, the quantization process has inherent losses but can be quite convincing so long as you don't try to enlarge the image too much. To my understanding WebP uses a similar technique but is far better as preserving quality while also keeping file sizes smaller (I presume there's a tradeoff in processing power and/or memory needed to create and recreate the images but modern processors are more than capable and bandwidth is expensive). PNGs use truly lossless compression but can't get as small and of course if something was originally saved in a quantized format (which is the standard for a lot of cameras, especially those in smartphones) then converting to PNG won't recover that lost data.

*Back in the days of the Nintendo Wii I found out that a bunch of my JPGs weren't in a format that the Wii understood. They were probably EXIF since they came from my 2nd Cousins fancy camera (it was a DSLR with a whole 5 MP image sensor, though the images still look pretty good even by today's standards). The Wii of course only supported the more common JFIF format and didn't do well with corrupted JPGs which was a common issue (most software could correct for these small errors but the Wii was 'special'). The reason my 2nd cousin's pictures still look good is because they were saved in a better format, the camera probably used a bigger sensor which means that the raw image was actually better (that's a whole rabbit hole of it's own), and of course it had proper optics, image stabilization, and a relatively fast processor (images need to be extracted from the sensor to memory then processed into a smaller format, then actually stored in permanent memory in a short amount of time). The reason JPG corruption was so common is afaik because most images are (or at least were) stored on SD Cards which are actually kind of bad. Even good SD cards are often made with cheaper NAND Flash than a comparatively priced SSD (they are smaller and more portable though), this means that a lot of SD Cards lose data pretty easily though better manufacturing technologies and better software correction have made them better in recent years (especially if you spring for the more expensive ones). Data is usually saved with some form of redundancy to make fixing small errors easier.

Kudos to Pierre-Marie Robitaille from the SkyScholar channel for his amazing contribution to this invention. People thought he was crazy and it would never work!

I'm an MRI technologist and have practiced for 18 years. MRI is the Cadillac of imaging. It's like doing surgery without cutting someone open. MRI doesn't damage the body in any way. I loved my job so much. It was highly technical and never boring. Great explanation of an MRI scanner!

Twat.
MRI is NOT "insane" as you say.

MRI is actually very clever.

I'm building my own Xray machine using an array of smoke detectors. Once that's working, I'll convert it into an MRI by adding a washing machine filled with bricks.

As a technical imaging professional and someone who has worked on brain science, hardware and software in and out of theatre, I commend the team who put this media together.

Typically these sort of videos are trite and dumbed-down but this is both intelligent and detailed for anyone who is genuinely interested.

Video footage, graphics and voicing on this was close to perfect. This cannot have been an easy project, so my respect.

JM.

What am AMAZING video 🤯 Hats offf👏👏👏

now i understand why the inventor won the Nobel prize......this is madness

Anyone else here cause they got scanned today? ;p

Where does the mantra of constant improvement 'get off ' with fMRI &c. machine engineers and manufacturers?

It can't be beyond the wit of mankind to get them to do a better job of it, or even just as good with a concerted effort to kill the row.

My scan yesterday took longer and I therefore held up patients who followed me, because I was apparently expressing my disgust at the insufferable cacophony by raising my eyebrows in despair.

Wasn't told not to and you know that the majority of the makers won't have thought through this far.
CAN do better.

Ask my little sister ❤.... she is my radiology idealism.... God bless her

The MRI is the brainchild of Dr. Raymond Damadian. Though the MRI is the greatest medical invention of the 20th century, he never received a Nobel Prize in Medicine. Many believe that’s because he was an outspoken young-earth creationist.

Why are the openings so tight though?

Eureka

The Resonance of Resolution and Reconnaissance

Awarded, Regarded!!!
Peace and Pace!!!

Forgive me, I’m not a trained MRI tech in any way, I’m just a retired Army Infantryman. One of the young men I served with in Iraq later went on to earn his PhD in Medical Imagery and is now teaching at MIT. He patented a couple of compact MRI antenna and he has a hope of developing a ‘field portable’ MRI system using (possibly) inflatable lightweight bladders and using fluidic metals in lieu of massive magnets. With the advancement of room temperature super conductors and newer alloys it seems possible. Please note that todays Infantryman in the Army has an average IQ of around 120, I was just average amongst these characters. I can see that adding an AI system that can improve the switching sequences to gain images and clarity would be a HUGE improvement. Quantum mechanics, when we’ll applied, can do amazing things but I’m curious if there would need to be an unobserved portion when using quantum designs, consider the ‘double slit’ experiment/observation, that’s some freaky stuff. I have so many questions about that technology.

MRI Imaging? ATM Machine... PIN Number.

MR is da SHIT, says an MR Technologist. 😉 😜

I had the honor of interviewing the true inventor of MRI technology some years ago, Dr. Raymond Damadian … what a gentleman & genius with a great sense of humor! RIP dear friend.

2015 AND COUNTING

sTILL HERE !

lol, when your looking up a screen and voice talk to you !

I have a Claustrophobia. That feels breathless

This video should be shown to every first time MRI patient. Knowing helps remove fear.