5 ms·

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 acce

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.

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.