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Thread: Shit that annoys you
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08-30-2021, 08:38 AM #35251
Lots of people coming to hang in my backyard this year. The grass in front of the gate was getting all trampled and shitty, so I scored some free sod and made it all nice again. More trampling, more getting shitty so I decided to get some flagstone pieces and make a sort of stone welcome-mat thing. People can trample the stones to their heart's content! Anyhow, off to the landscape supply place, I go inside and tell the girl what I need. She points out where it is, where I can get a buggy to put it on, and tells me I have to put it on the big scale, come back inside, and she will see weight and charge accordingly. All good, no problem.
So I get my 10 pieces of stone, which is like the smallest amount ever, but the scale is in use. Apparently this place got some big mother crate of huge boulders and tried to weigh it, but then the crate fell apart so they're using some heavy machinery to lift and move the stones out one-by-one. Lady operating said machinery says they're "gonna be a while." I go back in, tell the girl the situation and that I've got a small amount of stones and can I just give her $20 and be on my way? No, she says, they must be weighed. Fine.
Back outside, wait around 15 minutes, kill some time looking at different bags of sand and aggregates, then hooray the scale is finally free. I put the buggy on it, go inside, tell her my stones are there but to remove the weight of the buggy. She says it's basically only the weight of the buggy that is showing up. In the end they charged me $1.85. I just gave them $5.
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08-30-2021, 09:02 AM #35252
At the end of the day I feel like you won that one.
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08-30-2021, 09:07 AM #35253
man of ice
- Join Date
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Saturday afternoon I had essentially 3 MRIs - cervical, thoracic and lumbar spine (yeah my back is jacked). It annoys me that my ears are still ringing. Holy fuck was that loud. They gave me earplugs but still it was ridiculously loud and sounded like a traffic emergency in Bangkok, all these crazy different sounds at top fucking volume for ~75 minutes, holy shit. Annoying.
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08-30-2021, 09:20 AM #35254
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08-30-2021, 10:30 AM #35255
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08-30-2021, 10:39 AM #35256What we have here is an intelligence failure. You may be familiar with staring directly at that when shaving. .
-Ottime
One man can only push so many boulders up hills at one time.
-BMillsSkier
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08-30-2021, 11:18 AM #35257
MRI's came out well after I finished med school so I have no idea how they work, but all the different banging noises make no sense to me. One day maybe I'll take the time to learn about. Or maybe stop getting MRI's. I'm too busy trying not to panic from claustrophobia to let the noise bother me.
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08-30-2021, 11:36 AM #35258
I was amused by the banging noises and fell asleep. My MRI in July was of the brain.
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08-30-2021, 11:47 AM #35259
I used ear plugs and headset together when I did shoulder MRI recently. Didn’t help my claustrophobia and anxiety any. Never had any of that before but I was starting to freak out the last 10 minutes…
I didn't believe in reincarnation when I was your age either.
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08-30-2021, 11:48 AM #35260
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08-30-2021, 11:49 AM #35261
They should really offer Valium before MRI's.
I love valium...
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08-30-2021, 11:53 AM #35262
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08-30-2021, 12:02 PM #35263
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08-30-2021, 12:06 PM #35264
What in the fuck.
Sent from my iPhone using TGR Forums"somebody's gotta do it"
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08-30-2021, 12:25 PM #35265
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08-30-2021, 12:32 PM #35266
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08-30-2021, 12:42 PM #35267
Of all the year and half’s to pick too.
Kudos
Sent from my iPhone using TGR Forums
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08-30-2021, 12:55 PM #35268
man of ice
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08-30-2021, 01:00 PM #35269
Registered User
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The annoying MRI buzzing noise is from the rapid switching on and off of the secondary radiofrequency gradient coils that you put the anatomy of interest in- the plastic holder deal has a lot of wires in it that transmit and receive tons of RF energy like a two way antenna. In a nutshell it transmits energy and then listens for the signal coming back over and over again. When it is energized on and off rapidly, it vibrates making the noise.
The secondary coils use the RF energy to localize the signal from a particular 3D voxel within the larger main magnetic field. The scan reads out the information voxel by voxel, so it takes a long time to produce a large 3D volume (and to get good signal to noise there will generally be a couple runs to average). It has to be done as quickly as possible because people move (and time is money of course).
It's getting worse as technology marches on- we are getting more complicated coil designs trying to get more signal. Also we are moving towards stronger and stronger primary magnets so you need stronger gradient coils. A few vendors have introduced quieter systems that generally modulate the RF pulses to be less harsh, but I'm not sure how well they work.
There's also a pump noise that is always going to keep the superconducting main magnet cool, but that one is usually not as loud as the coil noise during the imaging.
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08-30-2021, 01:00 PM #35270
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08-30-2021, 04:02 PM #35271
Registered User
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08-30-2021, 04:09 PM #35272
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08-30-2021, 04:11 PM #35273
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08-30-2021, 04:17 PM #35274
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08-30-2021, 04:51 PM #35275
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