How strong would a magnetic field have to be to kill you?

Re:How strong would a magnetic field have to be to kill you? by ursidae on Monday January 12, 2015 @03:04PM (#8876084)

Radiologist here. We regularly image patients in 3T MRI scanners. As long as they don't have certain metal surgical implants, a pacemaker, or metallic foreign bodies, there is no problem.

Some institutions have research magnets up to 7T: http://www.healthcare.philips.com/main/products/mri/research...

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Re:How strong would a magnetic field have to be to kill you? by xaa on Monday January 12, 2015 @03:25PM (#8876203)

My research institute has a 11.7T (for small animals).

Although I must say, using MRI, even such a powerful one, for research is not as useful or cool as you'd expect since it takes so long to do one scan.

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Re:How strong would a magnetic field have to be to kill you? by SixSigma on Monday January 12, 2015 @05:11PM (#8876766)

> there is no problem

We are just beginning to investigative the post operative changes from anaesthesia in adults [1]. Can we be sure that there is no post MRI changes ?

While I'm not suggesting there is any cause for alarm I don't think we should dismiss the possibility out of hand.

[1] http://www.scientificamerican.com/article/hidden-dangers-of-...

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Re:How strong would a magnetic field have to be to kill you? by jkbyc on Monday January 12, 2015 @06:29PM (#8877178)

tattoos can be a problem, right?

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Re:How strong would a magnetic field have to be to kill you? by ursidae on Monday January 12, 2015 @08:24PM (#8877596)

Yes, certain inks contain enough metal to cause significant tissue heating.

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