3 ms·

I have an implant and MRIs or Xrays cause zero issues.

by edm0nd 2y ago

shagie 2y ago
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4848040/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4848040/ > The static magnetic field B_0 of an MRI machine attracts ferromagnetic objects and accelerates them toward the center of the bore of the MRI scanner. Ferromagnetic objects such as coins, hairpins, steel oxygen tanks or scissors can be accelerated or torqued by B_0 [4,10] and become dangerous projectiles [51]. The MRI safety program of the facility needs to warn about the misconception that larger objects will resist attraction to the field and need to emphasize the relationship between object size, material components, and projectile risk. Insufficient MRI safety training of ancillary medical personnel has led to fatal accidents when medical and other equipment was accelerated into the bore of the magnet [50,51]. X-rays would be no problem. Having something that is attracted by a magnet (such as another magnet) may cause an issue. https://pubmed.ncbi.nlm.nih.gov/38128958/ https://pubmed.ncbi.nlm.nih.gov/38128958/ has more on the "stuff flying into an MRI with concerning force." Things like a 10p coin imbedding itself 0.5cm into ballistic gel. A spoon going in 3.5 cm is a bit more concerning.
- edm0nd 2y ago
  I don't have the biomagnet implants, I have the NExT RFID + NFC chip by DangerousThings in my right hand so its not as much of a concern. Just go read straight from the source instead of linking research papers. It has the warning of: >MRI COMPATIBILITY WARNING The xG3 and all magnetic implant products should be removed before any MRI or magnetic imaging procedure. While our x-series transponders have tested as compatible with MRI machines up to 7T field strength, all magnetic products are incompatible with MRI machines and procedures. https://dangerousthings.com/product/titan/ https://dangerousthings.com/product/titan/
  - shagie 2y ago
    The comment that I originally responded to was: > with people implanting rare earth magnets into the tips of their pinky fingers And I was specifically referring to those rare earth magnets. Your comment then: > I have an implant and MRIs or Xrays cause zero issues. You gave no indication about what type of implant you hand or its manufacturer, and replying to my comment I took it in context that it was a rare earth magnet. Failing any information about the manufacturer, the information that I am able to provide to say "this can be dangerous" is research papers. You have further clarified that you only have a RFID and NFC chip implanted and not any magnets ... and provided a link to another product (rare earth magnet implant) from the same manufacturer that indicates that it is indeed dangerous when near an MRI machine which agrees with the original comment.
- newaccount74 2y ago
  MRIs don't accelerate objects instantaneously. If you look at the experimental setup, you'll see that they placed objects inside a pipe that allows them to accelerate with very low friction. Implants inside the body cannot accelerate freely. They are held in place by the surrounding tissue. A force will act on them, and this force can cause complications, but implants will not suddenly turn into projectiles.
  - leptons 2y ago
    Not going to trust "newaccount74" with that info. It seems that the experts say that if the metal in the body is attached to bone (a screw or a plate), that is okay, but not if the metal is not permanently fastened to bone, so "surrounding tissue" is not going to stop the metal from causing problems. >MRIs don't accelerate objects instantaneously. See some of the videos below for evidence to the contrary. Large metal objects inside the room can definitely accelerate very rapidly and suddenly, and unexpectedly and has killed people. https://www.youtube.com/shorts/2NNJrOsw8vs https://www.youtube.com/shorts/2NNJrOsw8vs "Metal objects not attached to bone may not be safe" https://www.youtube.com/watch?v=naAZVCxhEcI https://www.youtube.com/watch?v=naAZVCxhEcI https://www.youtube.com/watch?v=uDfwxoigZZk https://www.youtube.com/watch?v=uDfwxoigZZk https://www.youtube.com/watch?v=5KuzTyn45og https://www.youtube.com/watch?v=5KuzTyn45og https://www.youtube.com/watch?v=xn6sDYOrOC8 https://www.youtube.com/watch?v=xn6sDYOrOC8 https://www.youtube.com/watch?v=dxcrt1-gmLQ https://www.youtube.com/watch?v=dxcrt1-gmLQ
    - newaccount74 2y ago
      Please re-read my comment carefully. I never claimed undergoing an MRI with metallic implants was safe, in fact I stated the opposite: "A force will act on them, and this force can cause complications" The only thing I strongly disagree with is the urban myth that MRIs turn implants into projectiles. I don't think that can happen. None of the videos you linked show anything of the sort. Yes, objects can be accelerated to dangerous velocities; but only if they can move freely (eg. oxygen bottles on a cart, wheelchairs, small objects placed on a smooth surface). Objects embedded in tissue can not move freely and won't start tearing holes in your body like reverse bullets. It can of course still be dangerous. One lethal case documented in the literature involved a metallic clamp inside the patients head. The MRI seemed to have moved or dislodged it causing cranial haemorrhaging. It killed him, but it did not shoot out of his head like a bullet.
dylan604 2y ago
I would love to see how TSA reacts to your scans
- hwillis 2y ago
  TSA scanners run around 30 GHz, which can only go ~1 mm into body tissue. It also isn't as high resolution as a camera, and objects a few mm wide won't get picked up well.
- markx2 2y ago
  They don't see them. On the two occasions I failed to remove the large steel/titanium item in a piercing that set off the scatter machine so I was taken to a room and searched. But the steel in my hands, the LED, chip and magnet in my left hand, the Vivokey and chip in my right hand - nothing. Even the handheld scanner doesn't pick them up. One of the NFC chips was useful on my last trip to the US. I was constantly pulled over by the TSA and they might have wanted to inspect my laptop. So I made a backup, saved the minimum I needed, encrypted it on another device and uploaded to a domain. Clean installed the OS. The NFC chip carried a long string which to me gave the directory structure (very nested, no / in the string) and the encryption key. It wasn't needed, but it was amusing.
- edm0nd 2y ago
  non issue
yial 2y ago
I don’t have an implant, but I have purchased at times copper and metal shirt collar stays. Once after falling on ice, I had a chest x ray where my shirt was unbuttoned but didn’t need to be removed. A very anxious tech came to me a few minutes later asking if I had been wounded when I fell, if there was something embedded in me, etc. Very quickly figured it out when shown the images. Incredibly comical, and obviously not an issue. (Nor related to implants)

I have an implant and MRIs or Xrays cause zero issues.

by edm0nd 2y ago

I have an implant and MRIs or Xrays cause zero issues.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4848040/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4848040/ > The static magnetic field B_0 of an MRI machine attracts ferromagnetic objects and accelerates them toward the center of the bore of the MRI scanner. Ferromagnetic objects such as coins, hairpins, steel oxygen tanks or scissors can be accelerated or torqued by B_0 [4,10] and become dangerous projectiles [51]. The MRI safety program of the facility needs to warn about the misconception that larger objects will resist attraction to the field and need to emphasize the relationship between object size, material components, and projectile risk. Insufficient MRI safety training of ancillary medical personnel has led to fatal accidents when medical and other equipment was accelerated into the bore of the magnet [50,51]. X-rays would be no problem. Having something that is attracted by a magnet (such as another magnet) may cause an issue. https://pubmed.ncbi.nlm.nih.gov/38128958/ https://pubmed.ncbi.nlm.nih.gov/38128958/ has more on the "stuff flying into an MRI with concerning force." Things like a 10p coin imbedding itself 0.5cm into ballistic gel. A spoon going in 3.5 cm is a bit more concerning.

edm0nd 2y ago
I don't have the biomagnet implants, I have the NExT RFID + NFC chip by DangerousThings in my right hand so its not as much of a concern. Just go read straight from the source instead of linking research papers. It has the warning of: >MRI COMPATIBILITY WARNING The xG3 and all magnetic implant products should be removed before any MRI or magnetic imaging procedure. While our x-series transponders have tested as compatible with MRI machines up to 7T field strength, all magnetic products are incompatible with MRI machines and procedures. https://dangerousthings.com/product/titan/ https://dangerousthings.com/product/titan/
- shagie 2y ago
  The comment that I originally responded to was: > with people implanting rare earth magnets into the tips of their pinky fingers And I was specifically referring to those rare earth magnets. Your comment then: > I have an implant and MRIs or Xrays cause zero issues. You gave no indication about what type of implant you hand or its manufacturer, and replying to my comment I took it in context that it was a rare earth magnet. Failing any information about the manufacturer, the information that I am able to provide to say "this can be dangerous" is research papers. You have further clarified that you only have a RFID and NFC chip implanted and not any magnets ... and provided a link to another product (rare earth magnet implant) from the same manufacturer that indicates that it is indeed dangerous when near an MRI machine which agrees with the original comment.
newaccount74 2y ago
MRIs don't accelerate objects instantaneously. If you look at the experimental setup, you'll see that they placed objects inside a pipe that allows them to accelerate with very low friction. Implants inside the body cannot accelerate freely. They are held in place by the surrounding tissue. A force will act on them, and this force can cause complications, but implants will not suddenly turn into projectiles.
- leptons 2y ago
  Not going to trust "newaccount74" with that info. It seems that the experts say that if the metal in the body is attached to bone (a screw or a plate), that is okay, but not if the metal is not permanently fastened to bone, so "surrounding tissue" is not going to stop the metal from causing problems. >MRIs don't accelerate objects instantaneously. See some of the videos below for evidence to the contrary. Large metal objects inside the room can definitely accelerate very rapidly and suddenly, and unexpectedly and has killed people. https://www.youtube.com/shorts/2NNJrOsw8vs https://www.youtube.com/shorts/2NNJrOsw8vs "Metal objects not attached to bone may not be safe" https://www.youtube.com/watch?v=naAZVCxhEcI https://www.youtube.com/watch?v=naAZVCxhEcI https://www.youtube.com/watch?v=uDfwxoigZZk https://www.youtube.com/watch?v=uDfwxoigZZk https://www.youtube.com/watch?v=5KuzTyn45og https://www.youtube.com/watch?v=5KuzTyn45og https://www.youtube.com/watch?v=xn6sDYOrOC8 https://www.youtube.com/watch?v=xn6sDYOrOC8 https://www.youtube.com/watch?v=dxcrt1-gmLQ https://www.youtube.com/watch?v=dxcrt1-gmLQ
  - newaccount74 2y ago
    Please re-read my comment carefully. I never claimed undergoing an MRI with metallic implants was safe, in fact I stated the opposite: "A force will act on them, and this force can cause complications" The only thing I strongly disagree with is the urban myth that MRIs turn implants into projectiles. I don't think that can happen. None of the videos you linked show anything of the sort. Yes, objects can be accelerated to dangerous velocities; but only if they can move freely (eg. oxygen bottles on a cart, wheelchairs, small objects placed on a smooth surface). Objects embedded in tissue can not move freely and won't start tearing holes in your body like reverse bullets. It can of course still be dangerous. One lethal case documented in the literature involved a metallic clamp inside the patients head. The MRI seemed to have moved or dislodged it causing cranial haemorrhaging. It killed him, but it did not shoot out of his head like a bullet.

dylan604 2y ago

I would love to see how TSA reacts to your scans

hwillis 2y ago
TSA scanners run around 30 GHz, which can only go ~1 mm into body tissue. It also isn't as high resolution as a camera, and objects a few mm wide won't get picked up well.
markx2 2y ago
They don't see them. On the two occasions I failed to remove the large steel/titanium item in a piercing that set off the scatter machine so I was taken to a room and searched. But the steel in my hands, the LED, chip and magnet in my left hand, the Vivokey and chip in my right hand - nothing. Even the handheld scanner doesn't pick them up. One of the NFC chips was useful on my last trip to the US. I was constantly pulled over by the TSA and they might have wanted to inspect my laptop. So I made a backup, saved the minimum I needed, encrypted it on another device and uploaded to a domain. Clean installed the OS. The NFC chip carried a long string which to me gave the directory structure (very nested, no / in the string) and the encryption key. It wasn't needed, but it was amusing.
edm0nd 2y ago
non issue

yial 2y ago

I don’t have an implant, but I have purchased at times copper and metal shirt collar stays. Once after falling on ice, I had a chest x ray where my shirt was unbuttoned but didn’t need to be removed. A very anxious tech came to me a few minutes later asking if I had been wounded when I fell, if there was something embedded in me, etc. Very quickly figured it out when shown the images. Incredibly comical, and obviously not an issue. (Nor related to implants)