Hacker News Board Hacker News, browsed like a classic message board
Live data from Hacker News

How do MRI Headphones work? (2022)

tomlingham.com

Post reply on HN
Print view View original

71–80 of 200 posts

Re: How do MRI Headphones work? (2022)

#71

Post by hobs »

jjice wrote: post #15
focusedone wrote: post #6

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-...

Ha this is great! I completely relate. There was a YouTuber (WhiteBoy7thSt if anyone is familiar) I watched over ten years ago now that came from very humble beginnings, and when he started to make real money, his first splurge (and one he stuck with) was new socks. When I say new socks, I mean new socks most days, maybe even a new pair for every day of the year. These were normal white socks, not any nice wool socks…

This hits way too close to home. This was the thing I was going to do when I was rich, and now that I make enough money I barely even wear socks, lol.

Re: How do MRI Headphones work? (2022)

#72

Post by nessus42 »

snakeyjake wrote: post #21

>The only headphone tech that I was aware of or that I'd ever really considered I guess I'm old now because this style of headphone was present on every model of passenger aircraft in the sky when I was a young adult.

When I was a kid, I once brought a stethoscope with me on the airplane so that I could watch the movie for free. (Or rather listen to it.) I pulled off the heart-listening cup part of the stethoscope and inserted beverage straws into the rubber tubing. Then I put one straw into each of the two little holes in the armrest.

It worked perfectly! Until a stewardess caught me and made me stop.

Re: How do MRI Headphones work? (2022)

#73

Post by lxgr »

ortusdux wrote: post #46
lxgr wrote: post #3

Earlier quoted context omitted.

I've been on an airplane that used these! I think it even had a channel selector near the plug if I remember correctly (it's been a while).

I remember being able to select the pilot coms. I was nervous on my first flight as a kid, and it was very calming to hear the preflight checklist and ATC communication in the classic pilot cadence. This was pre 9-11. I did wonder on my last flight if I could use SDR & android to listen in.

You can just use LiveATC on your phone these days, since many flights now have gate-to-gate Wi-Fi.

I think it's not allowed to actually operate a radio receiver on an airplane in the us: https://travel.stackexchange.com/questions/2322/can-i-listen...

Some airlines might still have the "listen to ATC" feature available, but in my experience, it's the pilots' decision whether that's available or not, and I've only ever been able to use it on a United flight once.

Sirius XM on JetBlue also has an "ATC channel", but I've only ever heard silence there, and I'm not sure if that's a similar thing (i.e. sourced locally), or just a random ATC feed from somewhere in the country relayed via satellite.

Re: How do MRI Headphones work? (2022)

#74

Post by vidarh »

snakeyjake wrote: post #21

>The only headphone tech that I was aware of or that I'd ever really considered I guess I'm old now because this style of headphone was present on every model of passenger aircraft in the sky when I was a young adult.

The only passenger aircraft I've ever encountered this on in 39 years of flying regularly were domestic US flights up until ~2000 or so. To the point where it's still a story I tell about the ridiculous levels of penny-pinching of US airlines (United wanted $5 to rent a plastic tube to let you listen to the inflight entertainment, with no way to plug in your own).

Re: How do MRI Headphones work? (2022)

#75

Post by typhonic »

snakeyjake wrote: post #21

>The only headphone tech that I was aware of or that I'd ever really considered I guess I'm old now because this style of headphone was present on every model of passenger aircraft in the sky when I was a young adult.

I'm thinking I'm old too because I grew up with telephones that had crystal earphones connected with non-magnetic copper wire.

Re: How do MRI Headphones work? (2022)

#76

Post by toast0 »

causi wrote: post #49
mnw21cam wrote: post #45

Earlier quoted context omitted.

With socks, wear levelling is actually really useful. I tend to buy a whole rotation of identical black socks, and then I don't need to pair them up individually. Also, buying 15 pairs of socks in one go isn't going to break the bank.

But what's the use in that "useful"? When I pick up a sock and it has holes, I throw it out. When the drawer gets empty enough it can fit another package, I buy one. What utility would come from worrying about when I used a particular sock?

It can be hard to find the same model sock when you need to restock. Wear leveling and replacing them all at once eliminates difficulty with matching. Also, if you don't wear level, you may have one new sock and one worn sock, and that can be weird.

Re: How do MRI Headphones work? (2022)

#77

Post by sp332 »

koliber wrote: post #29

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 asked about mine, and they said it was fine for the 1.5-tesla machine but they probably would have had me remove it for the 3-tesla one. I did feel it pulsing, but not noticebly warmer.

Re: How do MRI Headphones work? (2022)

#78

Post by typhonic »

koliber wrote: post #29

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 got my third MRI after having a titanium plate put in my neck, and wow was I more nervous that time than the earlier two times. I made the tech let me test the panic button to prove it worked. Of course there was no problem with the MRI.

Re: How do MRI Headphones work? (2022)

#79

Post by fluidcruft »

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.

Re: How do MRI Headphones work? (2022)

#80

Post by [deleted] »

koliber wrote: post #29

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…

[deleted]
Post reply on HN