121–130 of 200 posts
This guy also has a post about the hierarchy of socks and underwear which resonated with me. https://tomlingham.com/articles/an-unfortunate-hierarchy-of-...
One of my favorite ISMRM posters that I saw in Toronto years ago was titled something like "a low-cost MRI-compatible communication system". It was really well written and you had to look at the photos to fully realize it was actually two Dixie cups connected by a string.
I found a bunch of posters here, but I could not find the exact one that you mentioned:
https://www.ismrm.org/19/program_files/DP02.htm
Maybe lost now? Or a different page?
Earlier quoted context omitted.
Sounds ingenious but I don’t quite follow the story. Why would a stewardess make you stop? Was there some system where you had to pay for headphones separately to hear a movie? I’m pretty sure all I remember are headrests having standard 1/8” audio jacks.
Yes, they would charge for headphones to watch the movie. The movie (there was only one, or maybe two on a long international flight) was played on CRT monitors mounted on the ceiling of each cabin section. That was 20+ years ago, before flat panel screens in every headrest that could tune into one of a couple dozen looping channels, and long, long before you could watch anything at any time from a huge library.
"long, long before you could watch [Season 2, Episodes 4 - 6 of Comedy Central Roast]."
> I'm not allowed to have any metals or magnetic materials on me. Loose or easily dislodged materials. My belt buckle was ok to keep on. Had to empty my pockets, take off my ring, metal piercings are disallowed. You don’t want gobs of belongings piling up on your magnet, and you don’t want something large enough to pin the human between it and the magnet. The first scenario is quite expensive to rectify. The second i…
Tangential, I saw an episode of House where he put a patient with medical implants into an MRI and they ran it for a few seconds till the burning was too painful. Was this realistic?
There is the odd burn - rare, and mostly preventable. Burns are the most common class or MRI injury.
I’m an MR tech.
Completely tangential story. A few months back I was getting an MRI. I stashed my belt, coins, keys, and phone. The machine started its clicking and thumping when I realized I had my wedding band on my ring finger. Immediately my mind raced to a video I once saw of an MRI machine propelling a fire extinguisher across the room. I braced for my finger to be torn off while I slowly took the wedding band off using only o…
If it was ferromagnetic you would likely feel it tugging as you got close to the magnet. Gold, silver, titanium are ok in MRI. However, next time, the second you realize you have metal on your person you should immediately inform the techs rather than try to just hold onto it! Aside from the risk of injury, it can be a real pain to get stuck items off the machine.
I’ve seen most these things play out. And as you say, it’s exactly what the call bell is for.
Completely tangential story. A few months back I was getting an MRI. I stashed my belt, coins, keys, and phone. The machine started its clicking and thumping when I realized I had my wedding band on my ring finger. Immediately my mind raced to a video I once saw of an MRI machine propelling a fire extinguisher across the room. I braced for my finger to be torn off while I slowly took the wedding band off using only o…
I forgot to take my tungsten carbide wedding band off as well for an MRI, nor did the MRI techs say anything. It was in the middle of the MRI scan that I realized it was still on and then my fingers on the ring hand kind of started to feel fairly warm, but not certain it that was actually the ring picking up magnetic energy or if it was psychosomatic, but no harm became of it. I looked it up afterwards and tungsten a…
Whether or not it’s a conductor is probably more of a concern. The loop likely wouldn’t be large enough to cause any drama though.
> I'm not allowed to have any metals or magnetic materials on me. Loose or easily dislodged materials. My belt buckle was ok to keep on. Had to empty my pockets, take off my ring, metal piercings are disallowed. You don’t want gobs of belongings piling up on your magnet, and you don’t want something large enough to pin the human between it and the magnet. The first scenario is quite expensive to rectify. The second i…
Does this possibly depend on the field strength? I was asked to change into a hospital gown when I had an MRI a couple years ago.
The American College of Radiology say the below [1].
‘it is advisable to require that the patients or research subjects wear site-supplied MR Safe scrubs or gowns in place of their own clothing and undergarments in the region undergoing direct RF irradiation.’
Slightly odd - this appears to be about burns rather than projectile risk. Anecdotally, sites that don’t change patients have more accidents.
[1] https://www.acr.org/-/media/ACR/Files/Radiology-Safety/MR-Sa...