MRI - why are they so noisy?

Yes, I think so - titanium is much lighter and no fear of going rusty!

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One of the scanners at Colchester was in the back of a road trailer.Cosy.
I can remember as it slowly enveloped my body…. please don’t cover my head. Please.

Radiotherapy was better. The beam position located by tattoos (no choice of design) on your abdomen.
Please try not to move during the sequence. We will be next door. Yes behind an inches thick lead door closed tightly.So quiet. Click. Click. Twizzle. Click.
Frightening to start with but after a few weeks you get used to it.

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Probably from when the previous occupant exploded.

I thought stainless steel was non-ferrous?

Steel is made from iron (fe)

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All stainless steel metals are a type of steel. That means their chemical composition contains iron. In most cases, stainless steel varieties with iron in their composition are magnetic . If the alloy has an austenitic crystal structure, then it’s not magnetic.

I’m basing my question purely on the fact that fridge magnets don’t stick to my stainless steel fridge

I guess there could be advantages in medical stainless steel being magnetic. Especially if you drop it inside someone

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I had one on my knee last year. Had the supplied ā€œheadphonesā€. Worst fidelity I have ever heard. Not surprising though as the phones were just a rubber tube. No metal allowed obviously

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Our next door neighbour is a Consultant Radiologist and she the tale of the departmental contract cleaners who were told on pain of death not to clean the room containing the scanner
Unfortunately the contract changed hands and the instructions didn’t get passed on to the new team - the helpful cleaner apparently thought it would be a good idea to take the metal industrial floor cleaner/ polisher into the scanner room
It required the scanner to be shut down £800,000 of helium to be drained and the local rugby team to pull the cleaner off the magnets

(Maybe apocryphal, but I do know she has said that she has to be careful with metal framed glasses and none metallic bra fasteners as she can feel the pull, but it made us chuckle)

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There are a number of the incidents reported of spontaneous firearm discharges around MRI scanners mostly in the USA. Also a well documented fatality in Brazil.

I must have been lucky!

I had one a couple of months or so ago and was offered a choice of artist. I chose Pink Floyd!

The music they played was from ā€œThe Endless Riverā€ which wouldn’t have been my first choice, but still very enjoyable. In fact, the whole experience was quite cathartic - a bit like meditation. I was almost sorry when it was over - and luckily for me the results of my scan turned out to be totally positive.

I have to give a big thumbs up to our NHS! As usual, the treatment I received was exemplary!

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You wouldn’t want to forget you had a pacemaker.

Think ā€˜Alien’.

G

I’ve had two and I only got ear defenders. :roll_eyes:

Oddly enough I had a CT scan today and on a table inside the scanner was a box of hospital gowns.

I trained in Nottingham when one of the first clinical MRI scanners was just being used (it was partly invented there). The scan times were huge, up to 3 hours, but they used to give med students £50 to be research subjects and we went down through the night and fell asleep. I still have the images.

Nobody was totally sure it was safe then, but for £50 we were all up for it!

Bruce

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I’m sure my last scan was around 10 minutes instead of the previous years’ 20 minutes.

Being scanned? Or maybe just temporarily plonked there!

I think the gowns often come with RFID tags these days for tracking purposes (amongst others!) and there are patient wristbands with tags available apparently. Maybe they were seeing if the tags cause any artefacts in the images. Just did a few quick searches - they are supposedly ā€˜safe’ but one study suggested the wristband raised the adjacent skin temp by 4 C during a long MR scan, another showed some mild local image artefacts adjacent to the tags.

The gym has just started tagging their towels too, I set the alarm off the other day when I didn’t have enough time to shower as I had to pick someone up unexpectedly, but kept hold of it as I was going back there later anyway - not much point putting a clean towel in the used towel bin, and I doubt reception would have wanted it back to give to another member as it had been in my bag.

This week in a rush I forgot to get a towel from reception, went for a swim after tennis and then realised I didn’t have a towel in the locker - a clean cotton t-shirt can be surprisingly absorbent - I really didn’t want to traipse through the lounge in my wet trunks to get one from reception!

Apparently the MRI sound effects are an original composition by Ralf Hütter and Florian Schneider.

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